-/ 



360 Plants of San Francisco. [zoe 



B. mariiima from the Farallones is a mere form of this species 

 not even worthy of varietal rank. Specimens of B, tdiginosa from 

 San Francisco have 2-5 awns and variable palese; the involucral 

 scales may be any number from 6 — 12. The island form has the 

 same villous-tomentose pubescence and leaves not more entire. 



266. Helenium puberulum DC. Common in wet places about 

 the cliffs, flowering nearly all the year. '* Sneezeweed." 



267. Achillea Millefolium L. Common, flowering nearly 

 all the year. Flowers often rosy. ** Yarrow." 



268. Anthemis cotula L. spec. 1261. '^Mayweed." This 

 plant was as common in the interior of California in 1854 and of 

 much ranker growth than it is now. 



269. Matricaria discoidea DC. Common in waste pi 



and about little-trodden streets. March — July. 



270. Matricaria occidentalis Greene Bull. Cal. Acad, ii, 

 150. Waste places In the western part of the city. April— July. 



This species should be compared with M. corymbifera DC. Prodi*, 

 vii, 297. 



271. Chrysanlhcinum segetum L. spec. 1254. About abandoned 

 gardens in the nortliern part of the city near the Presidio. " Corn 

 Marigold." 



272. Chrysanthemum Parlhenhmi (L. spec. 1250). About the 

 cliffs of Telegraph Hill. June— August. "Feverfew." 



273. Tanacetum CAMPHORATUM Less. Linnc-ea.vi, 521. Bu_- 

 Vista Park, western part of Golden Gate Park and adjacent dunes. 

 Flowering most of the year. " Tansy." 



274. Cotula coronopifolia L. spec. 1257. Common every- 

 where in shallow water and muddy margins, flowering all the year 

 " Brass-Buttons." 



275. Cotula australis (Sieb. Spreng Syst. iii, 497). In yards 

 and borders of sidewalks. Common. March— May. 



276. Soliva sessilis "^nxT & Pavon Prodr. 113, t. 24. Mission 

 Hills, South San Francisco, Presidio. March May. 



277. Artemisia Californica Less, in Linna^a, vi, 523. Bushy 



hillsides. June — August. 



278. Artemisia vulgaris L. var. Californica Besser. Lin- 



