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Rare Plants of San Francisco County

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Rare Plants of San Francisco County RARE PLANTS OF SAN FRANCISCO COUNTYa Published in 2019 by the Yerba Buena Chapter of the California Native Plant Society, Rare Plant Committee - http://cnps-yerbabuena.org & the San Francisco Department of the Environment - sfenvironment.org/biodiversity g Habit c Flowering Common [Synonymy] / notes f SF is Type Geographic Family e Habitat Scientific Nameb Name rarity statusd Periodh Locality Limit note SF Occurrences duration life form Arabis coast rock Brassicaceae - Rarity status: --/--/4.3 h p 12 Mar–Apr Yes rocky cliffs blepharophylla cress Mustard Family [A. hookeri ssp. f.] Reported from Arctostaphylos Franciscan Ericaceae - Heath Doyle Dr.and WWII Memorial. endemic to s p evergreen 1 Jan–Apr serpentine franciscana manzanita Family Historically occurred at Mt. Davidson. SF Rarity status: E/--/1B.1 [A. hookeri ssp. r.] Not in Howell, et Arctostaphylos al. Reported from Doyle Dr.and Presidio Ericaceae - Heath endemic to montana ssp. Coastal Bluffs. Historically occurred at s p evergreen 1 Feb–Apr Yes serpentine manzanita Family SF ravenii Mt. Davidson. Rarity status: E/E/1B.1 Chorizanthe San Francisco Polygonaceae - cuspidata ssp. Rarity status: --/--/1B.2 h a 10 Apr–Jul Yes sandy soil spineflower Buckwheat Family cuspidata Reported only from Baker Beach bluffs, ravines, Cirsium Franciscan Asteraceae - southern North, Coastal Bluff, and Fort Point h b/p 3 May–Sep Yes seeps, occasionally andrewsii thistle Sunflower Family limit on coast Bluffs. Rarity status: --/--/1B.2 on serpentine Onagraceae - Reported only from Inspiration Point endemic to Clarkia Presidio Evening-Primrose and WWII Memorial. h a 2 May–Jun Yes SF and serpentine grassland franciscana clarkia Family Rarity status: E/E/1B.1 Oakland Previously in the Scrophulariaceae. Reported only from Bayview Hill. Host Collinsia San Francisco Plantaginaceae - plant for the variable checkerspot h a 1 Mar–May Yes grassland multicolor collinsia Plantain Family butterfly. Rarity status: --/-- /1B.2 serpentine outcrops, endemic to Erysimum San Francisco Brassicaceae - Common on remnant dunes in SF. coastal scrub or h b 15 Jan–Apr Yes coastal Bay franciscanum wallflower Mustard Family Rarity status: --/--/4.2 dunes, granitic Area hillsides Gilia capitata Polemoniaceae - Extant at multiple sites in SF. ssp. blue coast gilia h a 13 Apr–Jul Yes sandy soil Phlox Family Rarity status: --/--/1B.1 chamissonis [G. h. vars. maritima and hirsutula, Grindelia hairy Asteraceae - G. rubricaulis var. confertum] Rarity h p 17 Apr–Jun Yes coastal prairie hirsutula gumplant Sunflower Family status: --/--/3.2 [Linum c.] Reported only from Coastal endemic to Hesperolinon Marin western Linaceae - Flax Bluffs, Inspiration Point, and WWII h a 3 Apr–Aug coastal Bay serpentine grassland congestum flax Family Memorial. Rarity status: Area T/T/1B.1 Horkelia [H. c. ssp. s.] Reintroduced at Baker near Kellogg's Rosaceae - Rose old dunes, coastal cuneata var. Beach North and Coastal Bluffs. h p 2 Apr–Aug northern horkelia Family sandhills sericea Rarity status: --/--1B.1 limit Iridaceae - Iris Fairly common in SF. Rarity Iris longipetala coast iris h p rhizomatous 16 Mar–Jun grassland Family status: --/--/4.2 Reported from seven Presidio sites endemic to Lessingia San Francisco Asteraceae - and Fort Funston. Rarity h a 8 Jun–Nov Yes northern SF sandy soil germanorum lessingia Sunflower Family status: E/E/1B.1 peninsula Not in Howell, et al. Reported only Piperia Michael's rein Orchidaceae - from Lake Merced, not seen since h p from tubers 1 Apr–Aug michaelii orchid Orchid Family 2010. Rarity status: --/--/4.2 Silene San Francisco Caryophyllaceae - [S.v. ssp. v.] Rarity endemic to old dunes, coastal h b 9 Mar–Aug Yes verecunda campion Pink Family status: --/--/1B.2 SF peninsula sandhills Extirpated from SF; reintroduced at Heron's Head and naturalized at Pier Suaeda California Chenopodiaceae - northern margins of coastal 94. Host plant for the western pygmy s p evergreen 3 Jul-Oct californica seablite Goosefoot Family limit salt marshes blue butterfly. No SF vouchers in CCH. Rarity status: E/--/1B.1 Footnotes a Inventory of Rare, Threatened and Endangered Plants of California - http://www.rareplants.cnps.org/; Wood, M.K. 2014. Annotated Checklist of the Vascular Plants of San Francisco’s Natural Areas. (http://www.wood-biological.com/san-francisco-plant-checklist/); Howell, J.T., P.H. Raven, and P. Rubtzoff. 1958. A Flora of San Francisco, California . University of San Francisco. Table of Rare Plants for the Presidio of San Francisco. 2019. Presidio Trust. b Scientific nomenclature conforms to the second edition of The Jepson Online Interchange as of date of current version of the checklist. c CCH = California Consortium of Herbaria d Listed as endangered, threatened or rare (federal / state / CNPS) e Life Form: f = fern or other pteridophyte; h = herb; g = grass or graminoid; ss = sub shrub; s = shrub; t = tree; v = vine f Duration: a = annual; b = biennial; p = perennial g SF Occurrences = Indicates the number of natural areas within the City and County of San Francisco where each species has been reported h Months and seasons listed per The Jepson Manual (TJM2).
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