Rare Plants - Revision history

Ccarlsson: added video

2023-10-02T17:14:23Z

added video

← Older revision		Revision as of 10:14, 2 October 2023
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	The endangered San Francisco lessingia is doing much better thanks to National Park Service and volunteer efforts to expand its remnant dune habitat at the Presidio. Although this species once occurred throughout the extensive dunes of San Francisco, the Presidio harbors four of the last five populations in the world (the fifth is on private land in Daly City). Its open sandy habitat has become quite rare after two centuries of landscape transformation and the unchecked spread of invasive non-native plant species such as iceplant (''Carpobrotus edulis'') and European beach grass (''Ammophila'' ''arenaria''). San Francisco lessingia and other rare dune annuals such as dune gilia (''Gilia capitata ''ssp.'' chamissonis'') and the San Francisco spineflower (''Chorizanthe cuspidata ''var. ''cuspidata'') have responded favorably to dune restoration efforts at the Presidio and Fort Funston. In the Lobos Creek Valley the San Francisco lessingia numbered in the hundreds during the drought years of the mid to late 1980s. By 1994, after several years of better rainfall, there were approximately seven thousand individuals of this annual plant. By 1998, after several years of extensive non-native plant removal and other dune restoration efforts, its numbers had climbed to more than a million! It's still endangered since its range is so restricted.		The endangered San Francisco lessingia is doing much better thanks to National Park Service and volunteer efforts to expand its remnant dune habitat at the Presidio. Although this species once occurred throughout the extensive dunes of San Francisco, the Presidio harbors four of the last five populations in the world (the fifth is on private land in Daly City). Its open sandy habitat has become quite rare after two centuries of landscape transformation and the unchecked spread of invasive non-native plant species such as iceplant (''Carpobrotus edulis'') and European beach grass (''Ammophila'' ''arenaria''). San Francisco lessingia and other rare dune annuals such as dune gilia (''Gilia capitata ''ssp.'' chamissonis'') and the San Francisco spineflower (''Chorizanthe cuspidata ''var. ''cuspidata'') have responded favorably to dune restoration efforts at the Presidio and Fort Funston. In the Lobos Creek Valley the San Francisco lessingia numbered in the hundreds during the drought years of the mid to late 1980s. By 1994, after several years of better rainfall, there were approximately seven thousand individuals of this annual plant. By 1998, after several years of extensive non-native plant removal and other dune restoration efforts, its numbers had climbed to more than a million! It's still endangered since its range is so restricted.

			<iframe src="https://archive.org/embed/natural-areas-lobos-valley-sept-30-2023" width="640" height="480" frameborder="0" webkitallowfullscreen="true" mozallowfullscreen="true" allowfullscreen></iframe>

			'''September 2023: An update on the restoration of Lobos Creek Valley, including a good look at a thriving patch of San Francisco Lessingia, after 30 years of volunteer and National Park Service efforts.'''

			''Video: Shaping San Francisco''

	<hr>		<hr>

Texteradmin at 05:24, 21 August 2009

2009-08-21T05:24:13Z

← Older revision		Revision as of 22:24, 20 August 2009
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	<hr>		<hr>

	[[Image:Tours-habitat.gif]] [[ Non-Native Invasive Species\| Continue Habitat/Species Tour]]		[[Image:Tours-habitat.gif\|link=Non-Native Invasive Species]] [[ Non-Native Invasive Species\| Continue Habitat/Species Tour]]

	[[Native Plant Restoration \|Prev. Document]] [[Coast Live Oaks \|Next Document]]		[[Native Plant Restoration \|Prev. Document]] [[Coast Live Oaks \|Next Document]]

	[[category:Presidio]][[category:Ecology]][[category:Habitat]][[category:Species]] [[category:1990s]]		[[category:Presidio]][[category:Ecology]][[category:Habitat]][[category:Species]] [[category:1990s]]

Texteradmin at 13:27, 20 August 2009

2009-08-20T13:27:40Z

← Older revision		Revision as of 06:27, 20 August 2009
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	The endangered San Francisco lessingia is doing much better thanks to National Park Service and volunteer efforts to expand its remnant dune habitat at the Presidio. Although this species once occurred throughout the extensive dunes of San Francisco, the Presidio harbors four of the last five populations in the world (the fifth is on private land in Daly City). Its open sandy habitat has become quite rare after two centuries of landscape transformation and the unchecked spread of invasive non-native plant species such as iceplant (''Carpobrotus edulis'') and European beach grass (''Ammophila'' ''arenaria''). San Francisco lessingia and other rare dune annuals such as dune gilia (''Gilia capitata ''ssp.'' chamissonis'') and the San Francisco spineflower (''Chorizanthe cuspidata ''var. ''cuspidata'') have responded favorably to dune restoration efforts at the Presidio and Fort Funston. In the Lobos Creek Valley the San Francisco lessingia numbered in the hundreds during the drought years of the mid to late 1980s. By 1994, after several years of better rainfall, there were approximately seven thousand individuals of this annual plant. By 1998, after several years of extensive non-native plant removal and other dune restoration efforts, its numbers had climbed to more than a million! It's still endangered since its range is so restricted.		The endangered San Francisco lessingia is doing much better thanks to National Park Service and volunteer efforts to expand its remnant dune habitat at the Presidio. Although this species once occurred throughout the extensive dunes of San Francisco, the Presidio harbors four of the last five populations in the world (the fifth is on private land in Daly City). Its open sandy habitat has become quite rare after two centuries of landscape transformation and the unchecked spread of invasive non-native plant species such as iceplant (''Carpobrotus edulis'') and European beach grass (''Ammophila'' ''arenaria''). San Francisco lessingia and other rare dune annuals such as dune gilia (''Gilia capitata ''ssp.'' chamissonis'') and the San Francisco spineflower (''Chorizanthe cuspidata ''var. ''cuspidata'') have responded favorably to dune restoration efforts at the Presidio and Fort Funston. In the Lobos Creek Valley the San Francisco lessingia numbered in the hundreds during the drought years of the mid to late 1980s. By 1994, after several years of better rainfall, there were approximately seven thousand individuals of this annual plant. By 1998, after several years of extensive non-native plant removal and other dune restoration efforts, its numbers had climbed to more than a million! It's still endangered since its range is so restricted.

	[[Image:~~Habitat-tour~~-~~button~~.~~jpg~~]] [[ Non-Native Invasive Species\|~~-->~~ Habitat/Species Tour ~~continues~~]]		<hr>

			[[Image:Tours-habitat.gif]] [[ Non-Native Invasive Species\| Continue Habitat/Species Tour]]

	[[Native Plant Restoration \|Prev. Document]] [[Coast Live Oaks \|Next Document]]		[[Native Plant Restoration \|Prev. Document]] [[Coast Live Oaks \|Next Document]]

	[[category:Presidio]][[category:Ecology]][[category:Habitat]][[category:Species]] [[category:1990s]]		[[category:Presidio]][[category:Ecology]][[category:Habitat]][[category:Species]] [[category:1990s]]

Ccarlsson: Unprotected "Rare Plants": finished essay

2009-01-18T01:04:29Z

Unprotected "Rare Plants": finished essay

← Older revision	Revision as of 18:04, 17 January 2009
(No difference)

Lisaruth: added page to habitat/species tour, added page content type

2008-12-19T09:33:29Z

added page to habitat/species tour, added page content type

← Older revision		Revision as of 02:33, 19 December 2008
Line 1:		Line 1:
			'''<font face = Papyrus> <font color = maroon> <font size = 4>Historical Essay</font></font> </font>'''

			''by Pete Holloran''

	[[Image:presidio$clarkia-fransciania.jpg]]		[[Image:presidio$clarkia-fransciania.jpg]]

	'''Presidio clarkia (Clarkia franciscana)''' ''~~image~~: Margo Bors''		'''Presidio clarkia''' (''Clarkia franciscana'')

			''Image: Margo Bors''

	After more than two centuries of deforestation, non-native tree plantings, building construction, and massive disturbance, including live-ammunition drills and grazing, it is remarkable that any native species survive, but 60 hectares of the Presidio (10 percent of the total area) support a fragmented mosaic of native plant communities. These communities provide habitat for 12 rare plant species and subspecies, including four federally-listed species. The last wild individual of the Presidio manzanita (''Arctostaphylos hookeri ssp.'' ''ravenii'') was first located in 1952 by Peter H. Raven, now director of the Missouri Botanical Garden, and is still thriving nearly fifty years later. The Presidio also provides refuge for two other local endemics, the Presidio clarkia (''Clarkia franciscana'', an annual in the ''Onagraceae'') and the San Francisco lessingia (''Lessingia germanorum'', an annual in the ''Asteraceae'').		After more than two centuries of deforestation, non-native tree plantings, building construction, and massive disturbance, including live-ammunition drills and grazing, it is remarkable that any native species survive, but 60 hectares of the Presidio (10 percent of the total area) support a fragmented mosaic of native plant communities. These communities provide habitat for 12 rare plant species and subspecies, including four federally-listed species. The last wild individual of the Presidio manzanita (''Arctostaphylos hookeri ssp.'' ''ravenii'') was first located in 1952 by Peter H. Raven, now director of the Missouri Botanical Garden, and is still thriving nearly fifty years later. The Presidio also provides refuge for two other local endemics, the Presidio clarkia (''Clarkia franciscana'', an annual in the ''Onagraceae'') and the San Francisco lessingia (''Lessingia germanorum'', an annual in the ''Asteraceae'').
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	[[Image:presidio$presidio-rare-plants$gilia_itm$gilia-capitata.jpg]]		[[Image:presidio$presidio-rare-plants$gilia_itm$gilia-capitata.jpg]]

	'''Dune gilia (Gilia capitata)''' ''~~photo~~: National Park Service''		'''Dune gilia''' (''Gilia capitata'')'

			''Photo: National Park Service''

	The endangered San Francisco lessingia is doing much better thanks to National Park Service and volunteer efforts to expand its remnant dune habitat at the Presidio. Although this species once occurred throughout the extensive dunes of San Francisco, the Presidio harbors four of the last five populations in the world (the fifth is on private land in Daly City). Its open sandy habitat has become quite rare after two centuries of landscape transformation and the unchecked spread of invasive non-native plant species such as iceplant (''Carpobrotus edulis'') and European beach grass (''Ammophila'' ''arenaria''). San Francisco lessingia and other rare dune annuals such as dune gilia (''Gilia capitata ''ssp.'' chamissonis'') and the San Francisco spineflower (''Chorizanthe cuspidata ''var. ''cuspidata'') have responded favorably to dune restoration efforts at the Presidio and Fort Funston. In the Lobos Creek Valley the San Francisco lessingia numbered in the hundreds during the drought years of the mid to late 1980s. By 1994, after several years of better rainfall, there were approximately seven thousand individuals of this annual plant. By 1998, after several years of extensive non-native plant removal and other dune restoration efforts, its numbers had climbed to more than a million! It's still endangered since its range is so restricted.		The endangered San Francisco lessingia is doing much better thanks to National Park Service and volunteer efforts to expand its remnant dune habitat at the Presidio. Although this species once occurred throughout the extensive dunes of San Francisco, the Presidio harbors four of the last five populations in the world (the fifth is on private land in Daly City). Its open sandy habitat has become quite rare after two centuries of landscape transformation and the unchecked spread of invasive non-native plant species such as iceplant (''Carpobrotus edulis'') and European beach grass (''Ammophila'' ''arenaria''). San Francisco lessingia and other rare dune annuals such as dune gilia (''Gilia capitata ''ssp.'' chamissonis'') and the San Francisco spineflower (''Chorizanthe cuspidata ''var. ''cuspidata'') have responded favorably to dune restoration efforts at the Presidio and Fort Funston. In the Lobos Creek Valley the San Francisco lessingia numbered in the hundreds during the drought years of the mid to late 1980s. By 1994, after several years of better rainfall, there were approximately seven thousand individuals of this annual plant. By 1998, after several years of extensive non-native plant removal and other dune restoration efforts, its numbers had climbed to more than a million! It's still endangered since its range is so restricted.

	''--~~Pete Holloran''~~		[[Image:Habitat-tour-button.jpg]] [[ Non-Native Invasive Species\|--> Habitat/Species Tour continues]]

	[[Native Plant Restoration \|Prev. Document]] [[Coast Live Oaks \|Next Document]]		[[Native Plant Restoration \|Prev. Document]] [[Coast Live Oaks \|Next Document]]


	[[category:Presidio]][[category:Ecology]][[category:Habitat]][[category:Species]] [[category:1990s]]		[[category:Presidio]][[category:Ecology]][[category:Habitat]][[category:Species]] [[category:1990s]]

Ccarlsson: fixed categories

2008-07-24T05:56:38Z

fixed categories

← Older revision		Revision as of 22:56, 23 July 2008
Line 18:		Line 18:


	[[category~~:Neighb~~:Presidio]][[category:Ecology]][[category:Habitat]][[category:Species]]		[[category:Presidio]][[category:Ecology]][[category:Habitat]][[category:Species]] [[category:1990s]]

Lisaruth: categories clean up

2008-06-27T21:20:53Z

categories clean up

← Older revision		Revision as of 14:20, 27 June 2008
Line 1:		Line 1:
	[[Image:presidio$clarkia-fransciania.jpg]]		[[Image:presidio$clarkia-fransciania.jpg]]

	'''Presidio clarkia ~~'''~~(Clarkia franciscana) ''image: Margo Bors''		'''Presidio clarkia (Clarkia franciscana)''' ''image: Margo Bors''

	After more than two centuries of deforestation, non-native tree plantings, building construction, and massive disturbance, including live-ammunition drills and grazing, it is remarkable that any native species survive, but 60 hectares of the Presidio (10 percent of the total area) support a fragmented mosaic of native plant communities. These communities provide habitat for 12 rare plant species and subspecies, including four federally-listed species. The last wild individual of the Presidio manzanita (''Arctostaphylos hookeri ssp.'' ''ravenii'') was first located in 1952 by Peter H. Raven, now director of the Missouri Botanical Garden, and is still thriving nearly fifty years later. The Presidio also provides refuge for two other local endemics, the Presidio clarkia (''Clarkia franciscana'', an annual in the ''Onagraceae'') and the San Francisco lessingia (''Lessingia germanorum'', an annual in the ''Asteraceae'').		After more than two centuries of deforestation, non-native tree plantings, building construction, and massive disturbance, including live-ammunition drills and grazing, it is remarkable that any native species survive, but 60 hectares of the Presidio (10 percent of the total area) support a fragmented mosaic of native plant communities. These communities provide habitat for 12 rare plant species and subspecies, including four federally-listed species. The last wild individual of the Presidio manzanita (''Arctostaphylos hookeri ssp.'' ''ravenii'') was first located in 1952 by Peter H. Raven, now director of the Missouri Botanical Garden, and is still thriving nearly fifty years later. The Presidio also provides refuge for two other local endemics, the Presidio clarkia (''Clarkia franciscana'', an annual in the ''Onagraceae'') and the San Francisco lessingia (''Lessingia germanorum'', an annual in the ''Asteraceae'').
Line 9:		Line 9:
	[[Image:presidio$presidio-rare-plants$gilia_itm$gilia-capitata.jpg]]		[[Image:presidio$presidio-rare-plants$gilia_itm$gilia-capitata.jpg]]

	'''Dune gilia ~~'''~~(Gilia capitata) ''photo: National Park Service''		'''Dune gilia (Gilia capitata)''' ''photo: National Park Service''

	The endangered San Francisco lessingia is doing much better thanks to National Park Service and volunteer efforts to expand its remnant dune habitat at the Presidio. Although this species once occurred throughout the extensive dunes of San Francisco, the Presidio harbors four of the last five populations in the world (the fifth is on private land in Daly City). Its open sandy habitat has become quite rare after two centuries of landscape transformation and the unchecked spread of invasive non-native plant species such as iceplant (''Carpobrotus edulis'') and European beach grass (''Ammophila'' ''arenaria''). San Francisco lessingia and other rare dune annuals such as dune gilia (''Gilia capitata ''ssp.'' chamissonis'') and the San Francisco spineflower (''Chorizanthe cuspidata ''var. ''cuspidata'') have responded favorably to dune restoration efforts at the Presidio and Fort Funston. In the Lobos Creek Valley the San Francisco lessingia numbered in the hundreds during the drought years of the mid to late 1980s. By 1994, after several years of better rainfall, there were approximately seven thousand individuals of this annual plant. By 1998, after several years of extensive non-native plant removal and other dune restoration efforts, its numbers had climbed to more than a million! It's still endangered since its range is so restricted.		The endangered San Francisco lessingia is doing much better thanks to National Park Service and volunteer efforts to expand its remnant dune habitat at the Presidio. Although this species once occurred throughout the extensive dunes of San Francisco, the Presidio harbors four of the last five populations in the world (the fifth is on private land in Daly City). Its open sandy habitat has become quite rare after two centuries of landscape transformation and the unchecked spread of invasive non-native plant species such as iceplant (''Carpobrotus edulis'') and European beach grass (''Ammophila'' ''arenaria''). San Francisco lessingia and other rare dune annuals such as dune gilia (''Gilia capitata ''ssp.'' chamissonis'') and the San Francisco spineflower (''Chorizanthe cuspidata ''var. ''cuspidata'') have responded favorably to dune restoration efforts at the Presidio and Fort Funston. In the Lobos Creek Valley the San Francisco lessingia numbered in the hundreds during the drought years of the mid to late 1980s. By 1994, after several years of better rainfall, there were approximately seven thousand individuals of this annual plant. By 1998, after several years of extensive non-native plant removal and other dune restoration efforts, its numbers had climbed to more than a million! It's still endangered since its range is so restricted.

	'''--Pete Holloran'''		''--Pete Holloran''

	[[~~category:ecology:habitat:species~~]]		[[Native Plant Restoration \|Prev. Document]] [[Coast Live Oaks \|Next Document]]
	[[~~category:geography:Presidio~~]]

	[[~~Native Plant Restoration \|Prev. Document~~]] [[~~Coast Live Oaks \|Next Document~~]]
			[[category:Neighb:Presidio]][[category:Ecology]][[category:Habitat]][[category:Species]]

Lisaruth at 16:43, 27 June 2008

2008-06-27T16:43:44Z

← Older revision		Revision as of 09:43, 27 June 2008
Line 13:		Line 13:
	The endangered San Francisco lessingia is doing much better thanks to National Park Service and volunteer efforts to expand its remnant dune habitat at the Presidio. Although this species once occurred throughout the extensive dunes of San Francisco, the Presidio harbors four of the last five populations in the world (the fifth is on private land in Daly City). Its open sandy habitat has become quite rare after two centuries of landscape transformation and the unchecked spread of invasive non-native plant species such as iceplant (''Carpobrotus edulis'') and European beach grass (''Ammophila'' ''arenaria''). San Francisco lessingia and other rare dune annuals such as dune gilia (''Gilia capitata ''ssp.'' chamissonis'') and the San Francisco spineflower (''Chorizanthe cuspidata ''var. ''cuspidata'') have responded favorably to dune restoration efforts at the Presidio and Fort Funston. In the Lobos Creek Valley the San Francisco lessingia numbered in the hundreds during the drought years of the mid to late 1980s. By 1994, after several years of better rainfall, there were approximately seven thousand individuals of this annual plant. By 1998, after several years of extensive non-native plant removal and other dune restoration efforts, its numbers had climbed to more than a million! It's still endangered since its range is so restricted.		The endangered San Francisco lessingia is doing much better thanks to National Park Service and volunteer efforts to expand its remnant dune habitat at the Presidio. Although this species once occurred throughout the extensive dunes of San Francisco, the Presidio harbors four of the last five populations in the world (the fifth is on private land in Daly City). Its open sandy habitat has become quite rare after two centuries of landscape transformation and the unchecked spread of invasive non-native plant species such as iceplant (''Carpobrotus edulis'') and European beach grass (''Ammophila'' ''arenaria''). San Francisco lessingia and other rare dune annuals such as dune gilia (''Gilia capitata ''ssp.'' chamissonis'') and the San Francisco spineflower (''Chorizanthe cuspidata ''var. ''cuspidata'') have responded favorably to dune restoration efforts at the Presidio and Fort Funston. In the Lobos Creek Valley the San Francisco lessingia numbered in the hundreds during the drought years of the mid to late 1980s. By 1994, after several years of better rainfall, there were approximately seven thousand individuals of this annual plant. By 1998, after several years of extensive non-native plant removal and other dune restoration efforts, its numbers had climbed to more than a million! It's still endangered since its range is so restricted.

	''--Pete Holloran''		'''--Pete Holloran'''

	[category:ecology~~][category~~:habitat~~][category~~:species]		[[category:ecology:habitat:species]]
	[category:geography~~][category~~:Presidio]		[[category:geography:Presidio]]

	[[Native Plant Restoration \|Prev. Document]] [[Coast Live Oaks \|Next Document]]		[[Native Plant Restoration \|Prev. Document]] [[Coast Live Oaks \|Next Document]]

Lisaruth: addition of categories

2008-03-26T00:38:41Z

addition of categories

← Older revision		Revision as of 17:38, 25 March 2008
Line 15:		Line 15:
	''--Pete Holloran''		''--Pete Holloran''

			[category:ecology][category:habitat][category:species]
			[category:geography][category:Presidio]

	[[Native Plant Restoration \|Prev. Document]] [[Coast Live Oaks \|Next Document]]		[[Native Plant Restoration \|Prev. Document]] [[Coast Live Oaks \|Next Document]]

Lisaruth at 00:02, 26 March 2008

2008-03-26T00:02:20Z

← Older revision		Revision as of 17:02, 25 March 2008
Line 1:		Line 1:
	[[Image:presidio$clarkia-fransciania.jpg]]		[[Image:presidio$clarkia-fransciania.jpg]]

	'''Presidio clarkia '''(Clarkia franciscana) ''--Margo Bors''		'''Presidio clarkia '''(Clarkia franciscana) ''image: Margo Bors''

	After more than two centuries of deforestation, non-native tree plantings, building construction, and massive disturbance, including live-ammunition drills and grazing, it is remarkable that any native species survive, but 60 hectares of the Presidio (10 percent of the total area) support a fragmented mosaic of native plant communities. These communities provide habitat for 12 rare plant species and subspecies, including four federally-listed species. The last wild individual of the Presidio manzanita (''Arctostaphylos hookeri ssp.'' ''ravenii'') was first located in 1952 by Peter H. Raven, now director of the Missouri Botanical Garden, and is still thriving nearly fifty years later. The Presidio also provides refuge for two other local endemics, the Presidio clarkia (''Clarkia franciscana'', an annual in the ''Onagraceae'') and the San Francisco lessingia (''Lessingia germanorum'', an annual in the ''Asteraceae'').		After more than two centuries of deforestation, non-native tree plantings, building construction, and massive disturbance, including live-ammunition drills and grazing, it is remarkable that any native species survive, but 60 hectares of the Presidio (10 percent of the total area) support a fragmented mosaic of native plant communities. These communities provide habitat for 12 rare plant species and subspecies, including four federally-listed species. The last wild individual of the Presidio manzanita (''Arctostaphylos hookeri ssp.'' ''ravenii'') was first located in 1952 by Peter H. Raven, now director of the Missouri Botanical Garden, and is still thriving nearly fifty years later. The Presidio also provides refuge for two other local endemics, the Presidio clarkia (''Clarkia franciscana'', an annual in the ''Onagraceae'') and the San Francisco lessingia (''Lessingia germanorum'', an annual in the ''Asteraceae'').
Line 9:		Line 9:
	[[Image:presidio$presidio-rare-plants$gilia_itm$gilia-capitata.jpg]]		[[Image:presidio$presidio-rare-plants$gilia_itm$gilia-capitata.jpg]]

	'''Dune gilia '''(Gilia capitata) ''--National Park Service''		'''Dune gilia '''(Gilia capitata) ''photo: National Park Service''

	The endangered San Francisco lessingia is doing much better thanks to National Park Service and volunteer efforts to expand its remnant dune habitat at the Presidio. Although this species once occurred throughout the extensive dunes of San Francisco, the Presidio harbors four of the last five populations in the world (the fifth is on private land in Daly City). Its open sandy habitat has become quite rare after two centuries of landscape transformation and the unchecked spread of invasive non-native plant species such as iceplant (''Carpobrotus edulis'') and European beach grass (''Ammophila'' ''arenaria''). San Francisco lessingia and other rare dune annuals such as dune gilia (''Gilia capitata ''ssp.'' chamissonis'') and the San Francisco spineflower (''Chorizanthe cuspidata ''var. ''cuspidata'') have responded favorably to dune restoration efforts at the Presidio and Fort Funston. In the Lobos Creek Valley the San Francisco lessingia numbered in the hundreds during the drought years of the mid to late 1980s. By 1994, after several years of better rainfall, there were approximately seven thousand individuals of this annual plant. By 1998, after several years of extensive non-native plant removal and other dune restoration efforts, its numbers had climbed to more than a million! It's still endangered since its range is so restricted.		The endangered San Francisco lessingia is doing much better thanks to National Park Service and volunteer efforts to expand its remnant dune habitat at the Presidio. Although this species once occurred throughout the extensive dunes of San Francisco, the Presidio harbors four of the last five populations in the world (the fifth is on private land in Daly City). Its open sandy habitat has become quite rare after two centuries of landscape transformation and the unchecked spread of invasive non-native plant species such as iceplant (''Carpobrotus edulis'') and European beach grass (''Ammophila'' ''arenaria''). San Francisco lessingia and other rare dune annuals such as dune gilia (''Gilia capitata ''ssp.'' chamissonis'') and the San Francisco spineflower (''Chorizanthe cuspidata ''var. ''cuspidata'') have responded favorably to dune restoration efforts at the Presidio and Fort Funston. In the Lobos Creek Valley the San Francisco lessingia numbered in the hundreds during the drought years of the mid to late 1980s. By 1994, after several years of better rainfall, there were approximately seven thousand individuals of this annual plant. By 1998, after several years of extensive non-native plant removal and other dune restoration efforts, its numbers had climbed to more than a million! It's still endangered since its range is so restricted.