262 CRUCIFERiE. 



mauuer of this whole subgroup. So far as known, the plant is qiiite 

 local ; and we have not seen it growing there since 1886. 

 ■M- )-+ -M- Calyx very irregular, the upperinost sepal greatly enlarged, in 

 lestivaiion conduplicate over the others. 



19. S. poly^aloides, Gray, Proc. Am. Acad. vi. 519 (1865); Greene, 

 Pitt. ii. 46. Very slender, simple or virgately branched, 1 — 2 ft. high, 

 glabrous: lower leaves unknown; cauline 1 — 2 in. long, linear, involute 

 to appear filiform; sagittate at base: fl. subsessile, only the yellowish 

 calyx conspicuous : upper sepal round-obovate, j^ in. long and nearly as 

 broad, the several times smaller lateral and lower oblong-lanceolate, 

 acuminate : petals minute, scarcely exceeding the shortest sepals : upper 

 pair of filaments twice the length of the others, connate throughout, 

 their anthers rudimentary, sterile: pod 1 — 1% in. long, 5^ line wide, 

 reflexed on the very short pedicels, nearly or quite straight, attenuate 

 upward to the short style: seeds narrowly winged. — Rocky hills in the 

 Sierra Nevada from Grass Valley southward to Amador Co., where it is 

 very common. 



12. THELYPODIUM, Endlicher. Coarser than Streptanthus, often 

 biennial; the racemes often shorter and condensed. Calyx green, 

 whitish or purplish; sepals equal at base. Petals with narrow claw and 

 flat linear to obovate limb, exserted, white, yellowish or rose-color. 

 Stamens tetradynamous ; filaments never connate; anthers sagittate at 

 base, curved. Pod usually long, linear, terete or slightly compressed, 

 sessile or short-stipitate. Seeds in 1 row, oblong, somewhat compressed, 

 not winged. — An excellent genus as to the typical species, but passing 

 toward Streptanthus by easy gradations from terete to slightly compressed 

 pods, and from narrow to slightly dilated claws of the petals. The 

 differences in the relation of radicle and cotyledons sometimes not even 

 of specific importance. 



1. T. integrifolium, Endl.; Walp. Rep. i. 172 (1842); Nutt.; T. & G. 



Fl. i. 96 (1838), under Pachypodmm. Biennial, stout, 3—6 ft. high, 

 corymbosely paniculate-branching above, glabrous, glaucescent: radical 

 leaves often 1 ft. long, oblong-elliptical, long-petioled, entire; cauline 

 sessile, lanceolate-oblong or narrowly lanceolate, 1 — 2 in. long: fl. crowded 

 and almost corymbose at the ends of the branches: sepals 1% — ^% lines 

 long: petals spatulate-obovate, pale rose-color; claw exceeding the 

 sepals : stamens exserted : fruiting racemes short, dense : pod % — 1 % in. 

 long, slentler, somewhat torulose; stipe 1 line long: radicle of seed 

 placed midway between the edge and the middle of one of the coty- 

 ledons. — In subsaline moist places near Tehachapi, Greene, thence 

 eastward and northward, chiefly beyond our borders. 



2. T. brachycarpum, Torr. Bot. Wilkes Exp. 231. t. 1 (1862); Gray, 



