I.'WAW. 89 



A • sella, Hook, -Amcr. l,p. lis. in part. Flowers large, pink ; whole plant 



larger than I isella, as it grows on the shores of Lake Superior. 



LIMNANTHACE E. 



Limnantuks DouolasiIj E.Br, in tt Edinb, PhUoe, Mag. July, 1833; Benth, Sort. 



Tram .) \. p. I S Ban Pablo bay; April. 



ANACABDIACE E. 



Rhus diykrsiloba, Tbrr. dkOray, Flor. I, p. 218. B. lobata, Sbofc. /■'/,,,-. Bor.-Amer. 1. p. 

 127. Comm< 'ii throughout northern California; more rare in the Klamath basin. Specimens 

 from Fort Reading; April, in flower, July, in fruit. Berries white ; called by the inhabitants 



llifornia ••poison oak.'' Several of our party were poisoned by it. and it also affected some 

 oi our mules. 



ACERACEiE. 



A KB macrophyi.u'm. Pursh. Flor. 1, p. 267 J Hook. Flor. Bor.-Amer. 1, p. 112, /. 38; Nutt. 

 Sylv. 2, p. 76, t. 67. Cascade Mountains and Willamette Valley, (). T. 



ir.txattm, Pursh, Flor. 1, p. 266; Hook. Flor. Bor.-Amer. l,p. 112, t. 39. Willa- 

 mette valley. 0. T. 



Acer QLABBUM, Torr. Ann. Lye. Nat. Hist. X. York, 2, p. 172. Cascade mountains, 0. T. 

 Acer TRIIWRTITI'M, Nutt. in Ton-. it Gray, Flor. 1. p. 217. Cascade mountains, 0. T. 



IIIPPOCASTAXACE/E. 



J'.- I WJ8 < aliforxica, Nutt. in Torr. A- Gray, Flor. \, p. 251, d'Sylva, 2, p. 69, /. 64. Com- 

 mon throughout the valleys of California. In flower July 1st. 



I ELASTRACELZE. 



EroxYMrs ooii.ENTALis, Nutt. in Torr. dt dray, Flor. I, p. 258. Coast near San Francii 

 May, in flower. Very nearly allied to F. atropurpureue ; perhaps not distinct. 



rJIAMNACE.E. 



Rhamhus Purshiahtjs, DC; Hook. Flor. lior.-Amer. l,p. 123, t. 43. 



Fran"'.- . Gray, Gen. TUust. '_'. p. 178, (f - PI. Wright. 2, p. 28. II. oleifolius, 



B fe. Pfar. Bor.-Amer. I, p. 123. Ii. laurifblius, Witt.; Zbrr. dGray, Flor. l,p. 263. Fori 



_' ; July. B re of Klamath lake : August, in fruit. 

 .ni's yeluti:. y/. fa Hook. Flor. Bor.-Amer. 1, p. 125, t. \~>. Common in the 



Cascade mountains, 0. T. The pubescence of this plant is very variable, and 1 havi 

 unable ' sh it froi igatus. 



Ck Bot. / . Zbrr. <k Gray, Flor. I, p. 266; Nvtt. 8 



•ns. Benth. PL Hartto. No. 1683. Pine woods in northern California; 

 grows in a mat on the ground. 



.'•' • Zbrr. it- ( . 1, p. 267. Near Fori Beading; July, in 



fruit. 

 Ck ' Beech. p. 329 /:■ th. PI. Hartw. A , U 



July, in fruit and Son 



