Lepidostemon.] x. crucit'er^. (Hook. f. & T. Anderson.) ' 147 



17. XiEPISOSTBIIXOir, H. f. & T. 



A dwarf annual with a short leafy unbranched stem. Leaves narrow, 

 toothed. Flowers yellow, on long subcorymbose pedicels. Sepals short, 

 equal at the base. Stamens free ; all the filaments with a broad appendage. 

 Fods linear, elongate; valves smooth; septum entire, hyaline, nerveless ; 

 style very short ; stigma 2-lobed. Seeds 1-seriate, oblong, flattened, with 

 long slender free cords. 



1. Xi. pedunculosus, H.f. & T. Jcmrn. Linn. Soc. v. 156. 



Interior valleys of Sikkim-Himalata ; rocky hills at Tungu, alt. 14-15,000 ft., B'.f. 



A dwarf alpine of peculiar habit, 1 in. high, covered "with soft forked hairs. iStem 

 erect, simple. Leaves numerous, J-14 in., oblong or narrowly spathulate, deeply sharply 

 toothed. Flowers numerous, rather large, subcorymbose ; pedicels | in., erect, downy. 

 Sepals erect, pilose, persistent. Petals short, obovate, emarginate. Pods 4 in. (imma- 

 ture), erect, downy. Seeds unknown ; afiSnity hence doubtful. 



18. SISVaXBRXTTM, Linn. 



Glabrous hairy or tomentose or hoary annual or biennial herbs. Leaves 

 entire lobed pinnatifid or pinnatisect. Fl<nirers.y ello-w, white or rose-coloured, 

 in lax often bracteate racemes. Sepals short or elongate, equal at the base 

 or the lateral saccate. Petals with long claws. Stamens free ; filaments all 

 simple. Pods elongate, cyhndric or compressed, rarely tetragonal ; valves 

 convex, usually 3-nerved ; septum membranous ; style short, stigma 2- 

 lobed. Seeds generally numerous, l-seriate, not margined, with filiform 

 cords ; cotyledons incumbent. — Distkib. Species about 80, chiefly European 

 and Oriental, with a few representatives in most temperate regions. 



Sect. I. Arabidopsis. Flowers white purple or rose-coloured. Valves 

 of the terete or compressed pod 1 -nerved or nerveless. — (Distinguishable 

 from Arabis by the cotyledons only.) 



* Cauline leaves sagittate. 



1. S. moUissimum, 0- A. Mey. in Led. Fl. Alt. m.. 140; glabrous or 

 hairy, leaves entire or toothed, flowers capitate ebraoteate, pods slender erect 

 glabrous, pedicels slender. Led. Ic. Fl. Ross. t. 262 ; H. f. & T. Jowm. 

 Linn. Soc. v. 160. 



Temperate Himalaya, from Sikkim to Kashmir, alt. 8-10,000 ft. (to 16,000 in 

 SikUm); Westeen Tibet, alt. 12-14,000 ft.— Distrib. Altai. 



An erect rigid biennial or perennial. Stem solitary or 2 or 3 from the same root, 

 ,9-18 in. high, simple or with a few stiff erect branches. Leaves 1-2 in., shortly 

 petioled, oborate-lanceolate ; cauline oblong, sagittate and stem-clasping, gradually 

 smaller upwards. Flowers purple or white, racemes elongate and lax in the fruit; 

 pedicels slender, erect, J-J in. Pods 1-1 J in., straight; valves convex; veins indis- 

 tinct; style short, slender. 



Vae. glaherrima; all parts glabrous or only the lower part of the stem puberulous. 

 —Western Himalaya, Tliomson ; Western Tibet, .F'oZcower. 



2. S. himalaicum, H. f. <Ss T. J own. Linn. Soc. v. 160 ; hispidly to- 

 mentose, leaves sinuate-toothed, flowers raoemed bracteate, pods erect or 

 spreading glabrous or pubescent. 



Temperate Himalaya, from Sikkim to Kashmir, alt. 10-12,000 ft. 



Like the preceding, but smaller and more branched, hirsute,t with mixed simple ana 



