smelowbkia. CRUCIFER.E. 57 



SCHCENOCRAMBE. 



unappendaged. Anthers oblong, slightly sagittate at base. Pods 

 lanceolate or lance-oblong, more or less obcompressed, with 

 sharply keeled valves, few-seeded. Stigma sessile. 



S. calycina C. A. Meyer], c. 170. Densely white tomentose to nearly 

 glabrous ; eespitose, the thick branching rootstock thickly covered wit h 

 the sheathing bases of dead leaves, stems erect, 2-6 inches high : leaves 

 mostly radical and with long slender petioles, pinnate or pinnatind, seg- 

 ments linear to oblong, entire or sparingly lobed : calyx villous, persistent: 

 petals 2 lines long, a half longer than the sepals : pods 3-6 lines long a line 

 wide attenuate to each end and beaked with the short style and broad 

 stigma, ascending, on spreading pedicels: seeds 2-8, a line long. Califor- 

 nia to the Arctic coast, east to the Rocky Mountains. 



S. Fremonti Watson Proc. Am. Acad, xi, 123. Pubescent with short 

 spreading scattered hairs, the branching woody base with a few remnants 

 of old leaves : stems 2-4 inches high : leaves less than half an inch long, 

 pinnate with 1-3 pairs of linear leaflets, which are strongly nerved and 

 somewhat revolute : sepals smooth, ovate to broadly oblong, less than a 

 line long, deciduous : the white petals twice longer: pods 2-6 lines long 

 somewhat obcompressed, obtuse at base and scarcely attenuate above, 

 beaked with the short thick style, valves faintly nerved : seeds small, 10 

 or more in each cell ; cotyledons obliquely incumbent. Southeastern Ore- 

 gon to northern California. 



21 SCHCENOCRAMBE Greene Pitt, iii, 127. 



Glaucous perennial herbs, the stems from horizontal branch- 

 ing rootstocks, often sparingly leafy and the whole pla^ t of a 

 reedy aspect. Sepals equal at base. Petals yellow, the limb 

 small in proportion to the long and broad claw f this much as in 

 StreptanthusJ. Pods slender terete, somewhat torulose, the 

 valves nerveless or faintly 1-nerved. Stigma entire. 



S. linifolia Greene 1. c. Sisymbrium linifolium Xvtt. Stems numer- 

 ous slender, branching, erect, 1-2 feet high : lowest leaves somewhat spat- 

 ulate, often coarsely few-toothed; cauline oblong-linear to narrowly lin- 

 ear, obtuse, entire, 1-2 inches long: racemes rather few-flowered, lax in 

 fruit : flowers 2-3 lines long : fruiting pedicels 4-5 lines long the slender pods 

 about 1^2 inches long, ascending or suberect: seeds elongated, scarcely 

 compressed. On clayey bluffs and banks, Oregon and Washington to 

 Montana and Wyoming. 



Tribe IV. Stanleys. Pods longitudinally 2-celled dehiscent 

 their wholt length, terete or prismatic, borne upon a more or less 

 manifest stipe. Stigma mostly circular in outline, sessile. Coty- 

 ledons incumbent. 



22 THELYPODIUM Endl. Gen. 876. 



Mostly coarse and succulent biennial or annual herbs with 

 entire orpinnatifid leaves and white purple or rarely yellow flow- 

 ers in usually dense elongated racemes. Sepals equal or the lat- 

 eral pair saccate at base, at length somewhat spreading. Petals 

 plane, long and narrow or with a well developed blade. Stamens 

 6, well exserted ; filaments long and slender; anthers narrowly 

 linear, sagittate at base curved or coiled. Stigma usually small. 

 Pods slender, terete or quadrangular, often torulose, borne upon 

 a sho*1 thick stipe. Steeds in 1 tow soinowhal compressed 



