212 crucipeejE. 



terete, sessile or short-stipitate. Seeds oblong, somewhat flattened, 

 not winged. Cotyledons incumbent. (Greek, thelus, female, and 

 pus, foot or support, the ovary more or less stipitate.) 



Caullne leaves mostly petioled; flowers V/^ to 2 lines long . .1. T. lasiophylhim. 

 Cauline leaves sessile or the lower frequently petioled; flowers 4 or 5 lines long. 



Ovary glabrous; petals conspicuously exceeding the acuminale sepals . 



2. T. Greenei. 



Ovary hairy; petals little exceeding the obtuse sepals . . .3. T. flavescens. 



1. T. lasiophyllum Greene. Annual; erect, simple or branching 

 above, 1 to 3 ft. high, hispid with scattered hairs or nearly glabrous 

 above; lower leaves sinuately pinnatifld with mostly acute denticulate 

 or entire segments, 2 to 5 in. long, the upper lanceolate, less lobed or 

 merely toothed, all petioled, or the upper rarely sessile; flowers IJ or 

 2 lines long, closely clustered, white or yellowish, on commonly 

 curved pedicels 1 line long; sepals oblong, scarcely more than half 

 the length of the narrow petals; pods ascending or strictly deflexed, 

 straight or somewhat curved, 2 to 4 in. long, J line wide or less, 

 obtuse at apex. 



More frequent in the Coast Range region but also in the Sierras. 

 Apr. A variable species. Var. kigidum Eobinson. Often branch- 

 ing from the base; pods IJ in. long, | line broad, divaricately spread- 

 ing, sharply tipped with the short style, more or less torulose. — 

 Elmira to Antioch. Var. inalienum Eobinson. Pods IJ to 2J in. 

 long, 1 line broad, erect or slightly spreading. — CoUinsville, Brandegee. 

 Scarcely ditfering from the preceding variety. 



2. T. Greenei. Glaucous and glabrous; erect, 3 to 4 ft. high, the 

 stem with several much elongated simple branches from below the 

 middle; leaves all sessile except the radical; lower cauline leaves 

 ovate or oblong-lanceolate, irregularly or somewhat erosely toothed or 

 laciniate, sometimes with two or three pairs of broad salient lobes 

 below the middle, 8 in. long or less; petiole about 1 in. long; upper- 

 most leaves linear-lanceolate, sharply serrate or denticulate, 1 to 4 in. 

 long, sessile; racemes in flower rather dense, in fruit much elongated 

 (even 2} ft. long); flowers 4 to 5 lines long, pale yellow; sepals 

 narrowly oblong, tapering to an acuminate apex, which often bears a 

 few hairs; petals much exceeding the sepals, the claw broad and the 

 undulate blade narrow; ovary glabrous; pods 2 to 3 in. long, rather 

 less than 1 line wide, beaked by the style. — (T. flavescens Greene, 

 not Streptanthus flavescens flook.) 



Brandegee's CoUinsville specimens are illustrative of the natural 

 type here described which is not infrequent from Main Prairie to the 

 Montezuma Hills and Antioch; thence southward through the Mt. 

 Diablo range. It is our present opinion that T. procerum (also 

 referred to Streptanthus and Caulanthus) of authors is the same; if it 

 be distinct the contrasting characters have yet to be discovered. A 

 satisfactory arrangement in this group can only be had, however, 

 when complete material (now lacking to herbaria) has been gathered 

 by field-students. 



3. T. flavescens (Hook). One ft. high, perhaps more; stems. 



