186 



CRUCIFER^E. XXXIII. DRABA. 



Unalaschka Whitlow-Grass. Fl. May, Ju. PI. ^ to ^ foot. 



50 D. AU'REA (Vahl. from Horn. fl. cecon. ed. 2. p. 599. fl. 

 dan. t. 1460.) stem leafy, somewhat branched, velvety ; leaves 

 oblong-linear, acute, entire, pubescent ; pods linear, puberulous, 

 twice or thrice the length of the pedicels. $ . H. Native of 

 Greenland. Hook. bot. mag. 2921. This is the only species 

 in this section with yellow flowers, the rest being all white. 

 Petals ohovate, blunt, clawed. 



GWden-flowered Whitlow-Grass. Fl. May, June. Clt. 1824. 

 PI. | foot. 



SECT. V. DRABE'LLA (a diminutive of Draba.) D. C. syst. 2. 

 p. 351. prod. 1. p. 171. Annual or biennial plants. Style none. 

 Flowers small, yellow, or white. 



51 D. LU'TEA (Gilib. fl. lith. in Ust. del. op. 2. p. 357.) stem 

 branched, leafy, pubescent ; leaves oval, denticulated, pubescent ; 

 pods elliptical-oblong, smooth, containing from 20 to 40 seeds. 

 . H. Flowers racemose, small, yellow. Petals blunt, almost 

 elliptical, longer than the calyx. 



Var. a, brevipes (D. C. syst. 2. p. 351.) pedicels hardly twice 

 the length of the pods. 0. H. Native of Armenia or Cappa- 

 docia. Draba Pontica, Desf. cor. Tourn. p. 67. t. 51. ann. du. 

 mus. 11. p. 381. t. 38. 



Var, ft, longipes (D. C. 1. c.) pedicels three or four times 

 longer than the pod. Q. H. Native of the north of Caucasus 

 in grassy places and on hills ; about Grodno, Dorpath, Moscow, 

 Petersburg!] ; also in the Ural mountains and Dauria. D. 

 lutea, Gilib. 1. c. D. muralis, Steph. fl. mosc. p. 29. Bieb. fl. 

 taur. no. 1246. suppl. p. 428. 



FeMow-flowered Whitlow-Grass. Fl. May, Aug. Clt. 1825. 

 PI foot. 



52 D. NEMORA'LIS (Lin. spec. ed. 1. p. 043. Houtt. pfl. syst. 

 4. t. 60. f. 1.) stem branched, leafy, pubescent ; leaves ovate, 

 tooths, pubescent ; pods elliptical-oblong, containing from 32 to 

 36 seeds, velvety with small hairs. Q. H. Native of Japan 

 by way-sides ; in Russia in groves ; in Tauria and Caucasus in 

 fields ; in Transylvania in shady mountains ; in the Carpathian 

 mountains and the Pyrenees. It is said also to grow in Sweden 

 and North America. Draba muralis, Thunb. fl. jap. 259. 

 Flowers yellow, differing hut little from D. lutea, unless that the 

 pods are pubescent, not smooth. 



Grove Whitlow-Grass. Fl. May, June. Clt. 1759. PL i foot. 



53 D. MURA'LIS (Lin. spec. ed. l.p. 643.) stem branched, leafy, 

 pubescent ; leaves ovate, toothed, somewhat cordate, stem-clasp- 

 ing, rather hairy ; pods elliptical-oblong, smooth, containing 12- 

 16 seeds. O- H. Native of England on the shady sides of 

 limestone mountains, but rare. In several parts of Craven, York- 

 shire, about Malham Cove ; at old Malton on walls, on the Warden 

 hills, Bedfordshire, on dry banks at Emborough, Somersetshire, 

 naturalised on the walls of Chelsea Botanic Garden, as likewise 

 about the old Botanic Garden, Edinburgh. It is also to be found 

 throughout the whole of Europe on the shady sides of walls, 

 rocks, and mountains. Smith, engl. bot. t. 912. Lam. ill. t. 

 556. f. 2. Hook, fl. lond. t. 64. D. nemorosa, All. ped. no. 

 897. D. ramosa, Gater. fl. montaub. 114. D. nemoralis, Delarb. 

 fl. auv. ed. 2. vol. 1. p. 371. Flowers small, white; petals 

 obovate, entire. 



Wall Whitlow-Grass. Fl. April, May. Engl. PI. | to 1 ft. 



54 D. CAROLINIA'NA (Walt. fl. carol. 174.) stem leafy at the 

 base and hispid, smooth at the top and naked ; leaves ovate- 

 roundish, entire, hispid ; pods linear, smooth, longer than the 

 pedicels. O- H. Native of North America in sandy fields from 

 Pennsylvania to Carolina, and on the banks of the river Mis- 

 souri, Virginia, New York, &c. &c. Draba hispidula, Mich. fl. 

 bor. amer. 2. p. 28. Flowers small, white. 



Carolinian Whitlow-Grass. Fl. March, April. PI. 1 or 2 in. 

 1 



or not 



f Species, the generic characters of which are doubtful, 

 sufficiently known. 



55 D. PUMI'LIO (R. Br. in D. C. syst. 2. p. 353.) scapes 

 naked, 1 -flowered ; radical leaves ovate, entire, stalked ; pods 

 ovate. Q. H. Native of Van Diemen's Land. Flowers small, 

 white. Calyx spreading. Root perpendicular. 



Dwarf Whitlow-Grass. Plant hardly 1 inch. 



56 D. VESICA'RIA (Desv. journ. bot. 3. p. 186.) scapes naked, 

 covered with stellate hairs ; leaves crowded, oblong, velvety 

 with stellate down, and ciliated with simple hairs ; pods ovate, 

 inflated, hairy. % . H. Native of Palestine on rocks and moun- 

 tains, and of Syria on Mount Lebanon. A little tufted plant 

 with yellow flowers. 



/?fe</<fer-podded Whitlow-Grass. PL 1 inch. 



57 D. PULCHE'LLA (Willd. herb, from Stev. obs. ined. D.C. 

 syst. 2. p. 354.) scapes naked ; leaves lanceolate, quite entire, 

 covered with stellate down on both surfaces ; pods ovate, smooth. 

 Native of Persia on the alps in the province of Ghilan. 



Pretty Whitlow-Grass. PL 1 inch. 



58 D. ARETIOI'DES (H. B. et Kth. nov. spec. amer. 5. p. 77. 

 t. 435.) scapes naked ; leaves oblong, blunt, villous, imbricated ; 

 pods ovate, villous. ~lj.. G. Native of South America on the 

 Andes of Quito, in the valleys of Mount Antisana at the height 

 of 3400 feet. Aretia cana, Willd. herb, from Kunth. Androsace 

 cana, Rcem. et Schult. syst. 5. p. 786. Flowers small, yellow. 



Aretia-like Whitlow-Grass. PL 1 inch. 



59 D. VIOLA'CEA (D. C. syst. 2. p. 354.) stem suffruticose, 

 branched, diffuse ; leaves opposite, ovate, downy ; pods oblong. 



Tj . G. Native of South America in very cold snowy places on 

 Mount Assuay in Quito at the height of 3740 feet. Draba 

 Bonplandiana, H. B. et Kth. nov. spec. amer. 5. p. 78. Petals 

 ovate, violet. 



Fiolet-fiowered Whitlow-Grass. Fl. ? PL | to 1 foot. 



60 D. ALYSSOI V DES (H. B. et Kth. nov. spec. amer. 5. p. 79.) 

 stem shrubby, branched, and is tomentose as well as ovate-oblong, 

 scattered, serrated leaves ; pods ovate-lanceolate, tomentose. 

 If. . G. Native of South America in the province of Pasto near 

 Zapayes Guachucal and Quarchu at the height of 2500 or 

 2800 feet. Hook, bot. misc. 2. p. 126. t. 32. A frutescent 

 herb with white flowers. 



Alyssum-like Whitlow-Grass. PL 1 or 2 feet. 



61 D. RAMOSI'SSIMA (Desv. jour. bot. 3. p. 186.) stem branched, 

 trailing, smooth ; leaves spatulate, remotely toothed, smooth. 

 Tf. . H. Native of North America. Pods smooth, compressed, 

 not margined, often oblique, bearing a long style. 



Much-branched Whitlow-Grass. PL trailing. 



62 D. GLABE'LLA (Pursh, fl. amer. sept. 2. p. 434.) scape 

 erect, generally bearing 2 leaves ; leaves spatulate-lanceolate, 

 smoothish ; racemes crowded with flowers ; pods ovate-lanceo- 

 late, acute. O- H. Native of North America at Hudson's 

 Bay. Flowers probably white. 



Bald Whitlow-Grass. PL 1 inch. 



63 D. ? LJEVIGA TA (Cham, et Schlecht. Linnaea. 1 . p. 25.) stem 

 leafy, simple, smooth, straight ; radical leaves and lower cauline 

 ones stalked, ovate, tapering to the base, rather fleshy, with ob- 

 soletely ciliated margins ; pods oblong-lanceolate, smooth, 4 or 

 6-times longer than the pedicel. I/ . H. Native of the island of 

 St. Lawrence. A plant of peculiar habit from being deficient of 

 the tufts of leaves. Root thick, descending. Flowers white, at 

 first corymbose, but at length racemose. Petals unguiculate, 

 obovate. 



Smoothed Whitlow-Grass. FL June. PL f foot. 



Cult. The whole of the species of this genus are pretty 

 little plants, particularly the species contained in the two first sec- 

 tions ; they are well adapted for ornamenting rock-work, but as 



