328 CALIFORNIA.— SUPPLEMENT. {.Rhamnea. 



Okd. XIV. LIMNANTHACEiE. Br. 



I. Limnanthes Douglasii. Br. — Lindl. Bot. Reg. t. 1673. Hook. Bot. Mag. t. 3554. 

 Torr.etGr. Fl. \.p. 209. 



Ord. XV. OXALIDEiE. De Cand. 



I. O. Oregana; acaulis, rhizomate elongato ramoso hie illic squamis dentato, foliis 

 longe petiolatis foliolis (magnis) late obcordatis ciliatis subtus petiolis scapoque unifloro 

 supra medium bibracteolato calycibusque pilosis pilis ubique ferrugineis, petalis obovatis, 

 staminibus ealycem subaequantibus. — Nutt. in Torr. et Gr. Fl. 1. p. 211. 



Mr Nuttall is quite correct in making this western Oxalis different from the O. Acetosella of Europe and 

 Eastern America. It is much larger, the young leaves and buds and the petioles, peduncles, bracteas and 

 calyx, and underside of the leaves and their margins, are clothed with ferruginous hairs. The description in 

 Hook. Fl. Bor. Am., of O. Acetosella, belongs exclusively to that plant : the North-western specimens, and 

 the remarks on them, belong to O. Oregana. It was first found by Mr Menzies in California. 



Okd. XVI. RHAMNEiE. 

 I. Rhamnus oleifolius. Hook. Fl, Bor. Am. 1. p. 123. t. 44. 



1. Ceanothus incanus ; ramis brevibus crassis teretibus siccitate subpruinosis (vix pubes- 

 centibus), foliis petiolatis lato elliptico-ovatis 3-costatis coriaceis glanduloso-serratis obtusis 

 supra velutinis subtus pubescenti-canis, glomerulis multifloris densis sessilibus folio bre- 

 vioribus — Torr. et Gr. Fl. \.p. 266.-/3. minor; foliis angustioribus supra nudis. 



Ovary with three distinct lobes rising above the disk. Flowers white. 



2. C. thyrsiflorus. Esch.—Hook. Fl. Bor. Am. 1. p. 125. Hook, et Am. in Bot. of Beech, 

 p. 136. Torr. et Gr. Fl. \.p. 266. 



3. C. divaricatus ; ramis teretibus siccitate pruinosis, ramulis saspe spiuescentibus 

 (spinis obtusis) patentibus, foliis elliptico-oblongis subcoriaceis tricostatis minute glan- 

 duloso-serratis'supra glabris lucidis subtus pallidioribus nervis prsecipue subpubescentibus, 

 paniculis elongatis densifloris, floribus glomeratis (caeruleis). — Nutt. in Torr. et Gr. Fl. 1. 

 p. 267. 



In its flowers this bears a great resemblance to the preceding ; but the leaves are very different, much less 

 strongly nerved, and the prominent angles of the stem are wholly wanting. The ovary, too, is smooth, and 

 does not present three projecting lobes as does that of C. thyrsiflorus. 



4. C. sorediatus ; ramis teretibus resinoso-verrucosis, ramulis patentibus subsericeis, 

 loliis elliptico-ovatis obtusis subcoriaceis minute glanduloso-dentatis 3-costatis supra 

 glabris subtus incano-pubescentibus ad nervos sericeis, glomerulis multifloris densis folio 

 parum longioribus, (floribus caeruleis). 



The short den9e glomerules of flowers resemble those of the first species ; but these flowers are blue. 

 The germen, too, is without lobes. The branches are copiously studded with resinous warts ; in the more 

 exposed parts of the stem, frequently forming large patches. 



