j4 BOTANY. 



Var. HYPECOIDES, Gray. Stems low and slender, 2-10' higli, flowers very 

 small, 2-3" in length. California and Western Arizona. Found on the dry 

 foot-hills of the Virginia and Trinity Mountains, Western Nevada ; 4,500 feet 



altitude; May. (51.) 



CoETDALis AUEEA, Willd. Var. occiDENTALiS, Eng. Numerous speci- 

 mens show the spur rather longer than usual in eastern plants, but the seeds are 

 scarcely more acutely margined. The pods are either erect or reflexed, straight 

 or curved, stout or slender, smooth or puberulent upon the sutures. Mis- 

 souri to Texas, and westward. Found in the Wahsatch Mountains and on 

 the rocky ridges bordering upon Salt Lake; 4,300-6,000 feet altitude; 



May-July. (52. 



Var. MicEANTHA, Eng. Flowers small, nearly spurless, on short pedicels. 

 Hitherto reported only from Western lUinois and Missouri. Bear River 

 Canon, in the Uinta Mountains, Utah ; 9,000 feet altitude ; August. (53.) 



CRUCIFERiE. 



Pakeya^ maceocaepa, Br. Glandular-pubescent; scape naked, 6' high ; 

 leaves oblong-lanceolate, long-petioled, sinuately or incisely dentate ; petals 

 purple, broadly ovate, retuse; siliques broadly linear, (li-2' long and 3" wide,) 

 erect, somewhat constricted between the seeds ; seeds in a single row, with 

 broad membranous wings. — Agreeing with the figure and description (in 

 Hooker's Flora Bor.-Amer.) of the Arctic plant, which has been hitherto found 

 only on the Arctic coast, from the mouth of the Mackenzie to Behring Strait. 

 Near the summit of one of the highest peaks of the Uintas, above Bear River 

 Canon, at an altitude of 12,000 feet. In flower and fruit ; August. (54.) 



Cheieanthus^ Menziesii, Benth. & Hook. {Hesperis, Hook. Phcenicau- 

 lis cheiranthoides, Nutt.) Rootstock thick and woody ; scapes (6-12' high) 

 nearly glabrous, with several sessile clasping leaves ; leaves oblong-lanceolate, 

 entire, attenuate at base into a long petiole, densely stellate-tomentose ; flowers 

 in a simple raceme, purple ; sepals colored, short, obtuse, much shorter than the 

 petals ; siliques (1-2' long and 2" broad) spreading, flat, ensiform, acute, the 

 valves opening elastically from the obtuse base. — Collected by Nuttall on the 



' PAEEYA, E. Bkown. Sepals erect. Petals spatiilate, unguiculate. Anthers linear. Silique 

 compressed with flat l-nerved, often veined valves, and a hyaline septum ; style rather short ; lohes of the 

 stigma connate. Seeds flat, orhioular, in 1-2 rows, broadly winged or marginless ; cotyledons acoum- 

 hent. — Low herbs, with thick perennial roots and numerous naked or leafy scapes and raoemed flowers. 

 Bekth. & Hook. 



^CHEIEANTHUS, L. Characters as in Hh-yaimum, but with the seeds usually compressed, and 

 the cotyledons acoumbent, or very rarely incumbent. Benth. & Hook. 



