136 X. CRUGiFERiE. (Hook. f. & T. Anderson.) [Arabis.- 



A. albida, Stev. ; DC. l.c. 142. A. pterosperma, Edgew. in Trans. Linn, 

 iSoc. XX. 33. 



Western Himalaya, from Kumaos to Maeri, alt. 5-12,000 ft.— Distkib. Alpine and 

 arctic Europe, Asia, N. America, Abyssinia. 



■ Stems simple, or slightly branched. Leaves oblong-lanceolate, obtuse, seldom entire, 

 radical spreading, petioled ; cauline sessile, ^'lowers J in. diam., white. Sep(U» 

 glabrous. Fetals spathulate, with long claws. Tods li-2^ in., naiTOw-linear, erect 

 when young, often spreading when ripe ; pedicels slender, glabrous or hairy.— The 

 Indian specimens dififer from the more western in the glabrous sepals. 



4. A. amplexicaulis, Edgew. in Trans. Linn. Soc. xx. 31 ; hispidly 

 pilose, leaves coarsely toothed, cauline w^th obtuse basal auricles, pods 

 horizontal or drooping, flowers large. H.f. <& T. in Journ. Linn. Soc. v, 142. 



Western Himalaya, from K-Umaoh to Kashmir, alt. 4500-9000 ft. 



A perennial resembling A. alpina, but larger, more robust, leaves broader, and hori- 

 zontal on almost drooping pods. Stem 6-24 in., subereot, simple or slightly branched, 

 hirsute, especially below. Radical leaves 1^—4 in. long, oboTate-oblong ; cauline sessile. 

 Macemes long, lax, many-flowered. Flowers white. Pods linear, acute ; style slender 

 elongated. Seeds larger than those of A. alpina, wingless. 



*** CauUne leaves many (few in ^. taraxicif olid), not auricled at the 

 base. Flowers racemed. Pods glabrous. Seeds 1-seriate. 



5. A. tibetica, H.f. & T. Journ. Linn. Soc. v. 143 ; perennial, stellately 

 hairy, leaves lobed or toothed, flowers small, pods suberect. falcate. A. 

 Thomsoni, H.f. l.c. 



In Kashmir and Western Tibet, alt. 9-16,000 ft., T. T., &o. • , 



jStems 4-8 in., numerous, suberect, branched, leafy. Badical leaves rosulate, petioled, 

 obovate or spathulate, more or less hairy ; upper cauline sessile, lanceolate or narrowly 

 spathulate, coarsely toothed or entire. Flowers numerous, white or pale pink. Sepals 

 acute, sparsely stellately hairy. Petals twice as long as the sepals, spathulate claw 

 short. Pods Ij in., narrow-linear, falcate, glabrous ; valves veined ; midrib distinct. 

 Seeds small, not margined — The fruiting specimens referred in Journ. Linn. Soc. to 

 A. Thomsoni belong probably to a Sisymbrium. 



6. A., ^landulosa, Ear. & Kir. En. PI. Soong. in Bull. Soc. 

 Mosc. zv. 147 ; annual, glandular, leaves ^pinnatifld, flowers small, pods 

 suberect obtuse. H.f. <Ss T. in Journ. Linn. Soc. v. 143. 



Tibetan region of Sikkim, alt. 14-16,000 ft., S.f.; Western Tibet near Ladak, 

 Stewart. — ^DiBTRiB. Soongaria. 



Stem short, spreading, prostrate, leafy. Radical leaves J-1 in., petioled ; cauline 



\-\ in., sessile, linear or entire. Petals J in., spathulate, claw short, pale rose or 



white. Pods 1 in., linear; style short tapering; pedicel short, thick, erect; valves 



■ conca,ve, veined, with a faint midrib. Seeds small, oblong, slightly flattened, not 



7. A. taraxaclfolia, Anders. ; annual, hairy, stems spreading, radical 

 leaves many long-petioled lyrate-pinnatifid or lobed, flowers few distant, 

 pedicels slender, pods very narrow, style long acute. 



Punjab ; in sandy places near Peshawur, Stewart. 



Stems 6-9 in., numerous, almost leafless, weak, glabrous above, subhispid near the 

 base. Madical leaves rough, hairy ; terminal lobe large, rounded, entire, rarely toothed ; 

 lateral short, raiTow, entire obtuse; petiole 2-3 in. ; cauline leaves few, sessile, oblong- 

 lanceolate, entire or sinuate-toothed. Sepals pubescent or glabrous. Petals \ in., 

 narrow-oblong, pale rose or white ; pedicels slender, spreading or suberect, glabrous. 

 Pods 14-24 in., suberect horizontal or decurved, linear, flattened, glabrous; pedicel 

 ^1 in. ; valves thin, veinless.- Closely allied to A. arenosa, L., but differs in the form 

 of the leaves and length of the pod. 



