42 CBUCIFER^. [Sisymbbicm. 



5. SISYACBRIUM, Linn. ; Fl. Brit. Ind. i, 147. 



Glabrous or more or less hairy or hispid annuals or perennials. 

 Leaves entire or toothed. Flowers white yellow or purplish, in lax 

 sometimes bracteate racemes. Petals with long claws. Pods elon- 

 gate, cylindric or compressed ; valves convex, 1-3 nerved, style short, 

 stigma 2-lobed. Seeds 1-seriate, not margined, with filiform cords ; 

 cotyledons incumbent. 



Flowers white, valves of pod 1-nerved . , \. 8. Thalianum. 

 Flowers yellow, valves of pod 3-nerved. 



Fruiting- pedicels as broad as the pod . . 2. 8. orientale. 



Fruiting pedicels slender . . . . 3. S. Irio. 



1. S. ThaUanum, J. Gay in Ann. 8c. Nat, 8er. I, vii, 899 ; F. B. I. i, 

 Mb. (Thale-cress.) 



An erect slender branching annual, 4-12 in. high, hispid with spread- 

 ing simple or forked hairs, or glabrous. Radical leaves stalked, obovate, 

 1-3 in., entire or slightly toothed ; cauline few, remote, sessile, generally 

 entire. Eacemes slender, elongate. Flowers small, white; pedicels 

 spreading or ascending, very slender. Pods |-1 in., narrow, linear, 

 glabrous, compressed ; valves convex. 1-nerved. Style short. Seeds very 

 small, flattened ; cotyledons obliquely incumbent. 



A common cold-weather annual. Distrib. : Plains of Upper India ; 

 Himalaya, from Kashmir to Bhutan, up to 10,000 ft. ; extending to Abys- 

 sinia and Europe. 



2. S. orientale, Linn. Cent. PI. II, 24. S. Columnge, Jacq ; F. B. I. i. 

 150. 



A tall annual, up to 3 ft. high. Stem stout, erect, slightly branching, 

 hispid with spreading or reflexed hairs, or glabrous and glaucous. Leaves 

 runcinate, or sometimes entire; segments toothed, ovate-oblong to lance- 

 olate ; terminal lobe angled, of the upper leaves hastate. Flowers large, 

 pale yellow. Sepals erect, glabrous. Pods 3-4 in,, spreading, very 

 slender, curved, glabrous or slightly hairy ; pedicels very stout ; valves 

 3-nerved. Style thick, 



Dehra Dun. Distbib. : Kashmir to Kumaon up to 10,000 , ft. ; W. 

 Tibet up to 14,000 ft. ; westward to Europe. 



3. S. Irio. Linn. Sp. PI. 659 ; F. B. I. i. 150 ; Watt E. D. Vern. Parjan 

 (Merwara). (London Rocket.) 



Annual or biennial. Stem 1-3 ft., glabrous or slightly pubescent below. 

 Leaves stalked, runcinate or pinnatifid ; lobes not auricled, remote, 

 spreading, toothed ; terminal large, sometimes hastate. Flowers minute, 

 yellow ; pedicels slender. Pods l|-2 in., overtopping the raceme when 

 young, slender, erect, srlabrous, subtorulose ; valves 3-nerved ; pedicels 

 ascending, curved . Stigma sessile. 



