,] X. CRUCiPERjE. (Hook. f. & T. Anderson.) 131 



long, narrow, cylindric or flattened; septum thick; stigma small, erect, 

 lobes parallel, thickened or with short horns at the base. Seeds 1-seriate, 

 flattened, with a narrow membranous wing.— Disteib. About 30 specie^ : 

 natives of the Mediterranean region, Arabia and Western and Central 

 Asia. 



M. i«ca»a!, the- common Stock, an J M. tristis are cultivated in the gardens of N. 

 India. 



1. M. odoratlssima, £r. in Hort. Kew. ed. 2, iv. 120 ; leaves petioled 

 lower obovate upper lanceolate sinuate or pinnatisect rarely entire. DG. 

 Prodr. i. 134 ; Bot. Mag. 1711 ; Boiss. Fl. Orient, i. 149 ; Griff. It. Notes, 282, 

 n. 767 ; H.f.de T. in Journ. Linn. Soc. v. 134. 



West Tibet in dry stony places, ascending to 12,000 ft.— Distkib. Westward to 

 Aaia Minor and the Caucasus. 



A perennial, 1-2 ft. ; hoitry with stellate puhesoence ; root woody. Racemes long, 

 erect ; flowers few, large, purple, fragrant. Petals |-1 in. ; limh linear-oblong or strap- 

 shaped, waved or twisted. Pods 4 in., erect, rigid, flattened. Seeds as broad as the 

 sepium, 



2, PAXIRVA, Br. 



Small tufted herbs; rootatock thick, perennial, many -headed. Leaves 

 linear or spathulate, entire sinuate or pinnatifid. Flowers large, white 

 or purple, raoemed or on scapes. Sepals erect lateral sometimes saccate at 

 the base. Pod much flattened, short and broad or elongated and narrow ; 

 valves smooth, with a midrib ; septum entire or divided, membranous or 

 hyaline ; style short ; stigma-lobes erect, decumbent. Seeds 1-2-seriate, 

 much flattened, with a membranous wing or wingless. — Distrib. Species 

 about 10, arctic or high alpine. 



1. P. exscapa, Mey. in Led. Fl. Alt. iii. 38; leaves spathulate obtuse 

 entire or slightly toothed, scapes 1-flowered, seeds winged. Led. Ic. Fl. 

 Alt. t. 86 ; H.f. & T. in Journ. Linn. Soc. v. 135. 



West Tibet, alt. 15-18,000 ft. — Distrib. Altai Mts. 



Stemless, glabrous or pubefulous. Flowers purple, scapes shorter than the leaves. 

 Pods J-3 in. long, narrow, drooping. Stigma sessile. Seeds 1-2-Beriate ; wing broad, 

 membranous. 



2. P. macrocarpa, Br. in Parry's Voy. app. 270 ; leaves entire or 

 sinuate-toothed, flowers corymbose, scapes much exceeding the leaves, pods 

 hnear, seeds winged. Led.Fl. Ross. i. 131 ; Hooh. Fl. Bor. Am. i. t. 15; 

 H.f. & T. in Journ. Linn. Soc. v. 135. Neurotoma nudicaule and scapi- 

 gerum, BG. Prodr. i. 156. 



Alpine regions of West Tibet, alt. 15-18,000 ft.— Distkib. Aifghaniatan, Altai, 

 arctic Europe, Asia and America. 



Slightly rough, very rarely glabrous. Leaves tufted, thick, petioled, lanceolate. 

 Flowers large ; scapes 6-12 in., rigid, many-flowered. Pods erect, linear, acute ; valves 

 strongly veined, rough. Seeds 1-seriate, much flattened. 



3. P. platycarpa, Kf. & T. Journ. Linn. Soc. v. 136; leaves spathu- 

 late or obovate quite entire, scapes short few-flowered, pods ovate, seeds 

 not winged. 



Easteek Himalaya, iii the Tibetan region of Sikkim, alt. 16-17,000 ft., M.f. _ 

 Bootstoek covered with spongy old petioles. Leaves leathery, glabrous or with hairy 



k2 



