Hesperis.] CRUCIFER^. 59 



fi, foliis inferioribus ommno integris. 



Radix lignosa, subfusiformiSj longissime dcscendcns, hie illic fibrosa, superne divisa. Caulis brevis, tIx 

 digitalis, canescens. Folia plerumque radicalia, longe petiolata, profunde pinnatifida, fere pinnata, inferiora 

 nonnunquam, in var, /3, pnecipue, integerrima, spathulata, incana, pubescenti-tomentosa, juniora praecipue, 

 laciniis linearibus acutiusculis vel obtusis; caulina pauca, minora, laciniis paucioribus. 77orcs albi, suavis- 

 simi, dense coryrabosi, pcdicellos longitudine subaequantes. Ca/yz brevis; s^alis lato^ovatis, valde conca^ 

 Tis, albo-marginatis, dorso valde pilosis. Petala obovata, sublonge unguiculata, obscure nervosa. Stamina 

 edentula. Antherce subrotundae. Germen oblongum, subhirsutum, superne stylo brevi attenuatum. Stigma 

 parvum, capitatum. Fructus abest. 



Hab. On the Rocky Mountains, between lat. 52° and 37°. — /3. Cape Mulgravo in Behring*s Straits. Lay 

 and Collie in Capt. Beechey's Collection. — Our specimens from the Rocky Mountains agree in every par- 

 ticular with the Altai plant, which I have received from Dr. Fischer, Those from Cape Mulgrave have 

 sometimes all the radical leaves, and occasionally some of the cauUne ones, entire. 



Trie. IV. Cakiline^ seu PleurorhizeEe Lomentaceoe. SiUqua aut silicula transverse 

 in articulos \-2-loculares, 1-2-spermos secedens, Semina immarginata, Cotyledones 

 plancB^ accumhentes (0==), septo [dum adult) paralleled. DC. 



17. CAKILE. izVm. 



Silicula biarticulata, compressa, articulo superlore ensiformi aut ovato. Semhia in 

 loculis solitaria, supeiyoris erectum, iuferioris pendulum. DC, 



1. C. edentula; siliculaj articulo superiore ovato acuto edentulo. — Bunias edentula. 

 BigeL Fl. BosL ed, 1. (1814,) p» 157, ed, 2. p. 251. — Cakilc aigyptiaca. Tussac, 77. des 

 Antilles. V. 1. p, 17. (fide De Cand.) — C. americana. Nutt> Gen, Am, (1818,) v, 2. p. 62. 

 De Cand. Prodr. v. 1. p. 185. — Bunias maritima. Pursh, FL Am, v, 2, p. 434-. 



Hab. Canada. Pursh. Strand of the sea coast, and also on the shores of the ^eat northern lakes of the 

 St. Lawrence. Nuttall. — First distinguished in North America by Professor Bi^olow, whose name I there- 

 fore retain. I have never seen specimens. According to De CandoUe, it extends to the West Indian Islands. 



SuBORD. II. NoTORHizE^ (ol|). Cotykdoncs plaucB, incumhentes. Eadicula dorsalis, 

 nempe medio dorso cotyledonum incumbens, Semina ovata. DC, 



r 

 r 



Trib, V. SiSYJiBREiE SOU NotorhizcED Silicjuosa}. SiUqua bilocularis, longitudinaliter 

 dehiscens, valvis concavis carinafisve. Semina ovata aut oblonga, immarginata, Cotyle- 

 donesplancB, incumbentes, septo contraricB. — Trlbus distinctissima ex characteribus sper- 

 miciS) sed hdbitu ad Arahideas accedens. DC, 



18. HESPERIS. Zinn. 



SiUqua teretiuscula aut subtetragona (vel compressa). Stigmata duo, erccta, connivcntia. 

 Cat, basi bisaccatus, Semina subtriquctra. Stamina edentula. DC. 



1. H. matronalis; pedlcellis calycis longitudine, petalis obovatis, siliquis erectis torosis 

 alabris margine noa incrassatis, foliis ovato-lanceolatis dcntatis, caule erecto subsimplici. 

 nC—Linn. Sp. PL p, 927. (et H. inodora. Ejusd. et EngL Bot, t, 731.) De Cand. Prodr, 



V, h p. 189. 



Hab. Shores of Lake Huron. J^r. Todd. 



H 2 



