162 X. CRUCiFER^. (Hook. f. & T. Anderson) [Thlaspi. 



style short or long. Seeds 2 or more in each cell, not winged ; radicle ac- 

 cnmbent.— DiSTEiB. Species about 30 ; natives of temperate Jiurope, Asia, 

 and N. America. 



1. T. arvense, Linn. ; glabrous, annual, erect, leaves obovate oblo^ 

 'toothed, cauline amplexicaul, seeds concentrically grooved. H.f.&T. 



in Jowm. lAnn. Soe. v. 176. 



A weed of cultivation throughout the temperate and subalpine Himalaya, ascending 

 to 14,000 ft.— DiSTBiB. Europe, Asia, always in cultivated places. 



Stem 6-18 in., simple or corymbosely branched above. Badical leaves petioled, soon 

 withering; cauline 4 in., oblong-lanceolate, usually acute, toothed; auricles sagittate. 

 Fruiting racemes elongate ; pedicels spreading, a little longer than the pods. Pods 

 J-| in. diam., much flattened, obovate-orbicular, wing very broad, notch deep, Bome- 

 times closed by the overlapping of the aides. Seeds 5-6 in each cell. 



2. T. cardiocarpum, H.f. & T. in Journ. Froc. Linn. Soc. 176 ; annual, 

 erect, leaves broadly oblong obscurely toothed, caiUine amplexicaul, seeds 

 smooth. 



Kashmir, alt. 5-9000 ft. — Uisteib. Aflghanistan.- 



Slightly glaucous, less robust than the preceding. Stem 6-12 in.; branches basal, 

 few, tall, erect. Madical leaves shortly petioled ; cauline ovate or oblong, obtuse, erect ; 

 auricles broadly sagittate. Racemes elongate in fruit, pedicels \ in. Pods broadly 

 notched at the tip ; valves with a membranous reticulated wing, broad and rounded 

 above. Seeds 4-5 in each cell. — Closely allied to and perhaps identical with T. Kots- 

 chyanum, Boiss., of which we have not seen ripe fruit. 



3. T. alpestre, Linn. ; perennial, tufted, radical leaves oblong or 

 ovate, cauline cordate amplexicaul, pods triangular-obcordate, seeds smooth. 

 H.f. & T. in Journ. Linn. Soc. v. 177. T. cochleariforme, DG. T. Grif- 

 fitManum, Boiss. Fl. Orient, i. 329. 



Temperate and subalpine Himalaya and Western Tibet from Sikkim to Kashmjs, 

 alt. 7-12,000 ft. ; in Sikkim only on the dry inner ranges. — Disteib. Alps of Europe, 

 Asia, America ; Andes. 



~ Stem 4-12 in., stiff, glabrous, somewhat glaucous, erect, simple or branched. Root- 

 stock often branching and shortly creeping near the surface. Radical leaves sometimes 

 almost orbicular, cauline oblong or obovate-cordate ; auricles small obtuse. Flowers 

 rather large, white; racemes much elongated in fruit; pedicels horizontal, as long as ■ 

 the pods. Pods J in. , narrowed at the base, broadly not deeply notched ; valves com- 

 pressed, wing very narrow below, broader above ; angles rounded, outer often sharp ; 

 style equalling the notch or projecting beyond it. Seeds 4-8 in each cell. 



4. T. cochlearioides, E.f. d; T. in Journ. Linn. Soc. v. 177: small, 

 decumbent, glabrous, perennial, radical leaves very long-petioled orbicular- 

 ovate, scape flexuous decumbent few-flowered, pods oblong curved and 

 twisted. 



Interior of the Sikkim Himalaya, alt. 14-16,000 ft., M.f. 



Somewhat fleshy. Rootstoch slender, branching above and sparingly covered with 

 the fibrous bases of the old petioles. Stems few, 1-2 in., weak, decumbent or suberect, 

 wiih 2 or 3 small sessile ovate leaves. Radical leaves loosely tufted, petioles 

 slender, slightly toothed, under side pitted. Flowers small, white, in a short corymb. 

 Pods J in., racemose, emarginate ; valves compressed, narrowly bordered ; style short, 

 slender. 



33. XBERXDEXiIiA, Boiss. 



Glabrous herbs or small undershrubs, branching from the base. Leaves 

 alternate, rarely opposite, upper generally amplexicaul with sagittate auri- 



