408 CALIFORNIA ACADEMY OF SCIENCES. 



216. Convolvulus macrostegius, Greene, Bull. Cal. 

 Acad. i. 208 — Abundant on the north side, suffrutescent, 

 the stems scarcely twining, but trailing several yards over 

 rocks and bushes. The peculiar inflorescence of this species 

 attains a very remarkable development on this island. The 

 flowers are arranged in a forked cyme, commonly five and 

 seven, sometimes eleven in eacii cyme, every flower being 

 separately large-foliaceous-bracted, a pair of somewhat 

 larger bracts subtending the whole cyme. The corollas are 

 developed, of course at the rate of one a day only, on each 

 fork of tlie cyme. They are little larger than those of C. 

 occidentalis, which is just as common at Santa Barbara on 

 the opposite side of the channel, but of which no trace is 

 found on the island. 



217. Convolvulus arvensis, Linn. 1. c. 153. — In a field 

 near the principal settlement. Only a few plants, hence no 

 doubt of recent introduction. 



218. CuscuTA subinclusa, Durand & Hilgard, Journ. 

 Acad. Philad. ser. 2. iii. 42. — Not at all frequent, and rather 

 depauperate. 



219. SoLANUM DouGLASii, Dunal. DC. Prod. xiii. 48. — 

 Quite rare. 



220. SoLANUM Xanti, var. Wallacei, Gray, Proc. Am. 

 Acad. xi. 90. — Frequent, but far less common than on 

 Guadalupe. 



221. Datura meteloides,.DC. Prod. xiii. 544 — In canons 

 of the northern and western parts of the island. 



222. Nicotiana Cleveland:, Gray, Syn. Fl. 242.— Like 

 the typical mainland form, and not approaching N. pet- 

 uiii(pJiora of Guadalupe. 



223. LiNARiA Canadensis, Dum. Cbav. Mon. 149. — 



224. Antirrhinum Nuttallianum, Bentli. DC. Prod. x. 

 592. — Rocky steeps, near the sea; common and very robust. 



