VOL. II.] Plants of San Francisco, 383 



576. AsPiDiUM RIGIDUM Swartz. var. argutum Eaton. Poiat 

 Lobos, sides of ravines near Lake Merced, Strawberry Hill. *' Call- 

 fornian Male-Fern." 



577. AsPiDiUM MUNITUM Kaulf. Enum. FiL 236. Golden Gate 

 Park, Point Lobos, Fort Point, Laguna de la Puerca. *' Shield- 

 Fern." 



SALVINIACE^. 



578. AzOLLA Caroliniana. Willd. Sp. PI. v, 541. Lobos 

 Creek, Mountain Lake, Presidio Marsh. '' Water-Fern." 



50« 



ADDENDA. 



-^ 



lULis Watson F 



About pools south of Mountain Lake. June— September. 



104(2. Me li lotus 



About Islais Creek. 



June— September. "White Melilot," "Spike-Clover." 



123. Prunus demissa grows 6-12 feet high on the northern 

 slope of a high hill near the bay in South San Francisco. 



133a. Potentilla rivalis Nutt. T. & G., Fl. i, 437. Abund- 

 ant about the margin of Laguna de la Puerca. March—July. 



263^. B^RiA MACRANTHA Gray. Proc. Am. Acad, xxiii, 231. 

 This plant is represented at Point Lobos by a form with broad leaves 

 and 2-5 pappus awns, which connects it rather closely with B. 

 chrysostoma. It is here unquestionably annual. 



428a. Atriplex Nuttallii? Perhaps this species, but no fruit 

 has been obtained. The plant forms a spreading clump several feet 

 broad within a fence near the entrance to Black Point Reservation. 



Page 355, after No. 207 insert 



DIPSACE^. 



DirsACUS SYLVESTRis. Mill Diet. n. 2. Behind and above the 

 Presidio proper. Collected by Miss Faustma Butler. Wdd 

 Teasel." This is the first time this species has been brought o 

 our notice, although D. fidlonum, the "Fullers Teasel s 

 thoroughly naturalized and covers considerable tracts about the 

 Oakland and Alameda fields and at Tamalpais. 



