40 



CRUCIFERAE 



Sandy soil, 10 to 5700 feet: Monterey Co.; Inyo Co.; south to the Mohave and 

 Colorado deserts. East to Arizona and Nevada, sonth to Sonora. ^lar.-Ai)r. 



Note on tho flower. — The upper pair of stjiincns (closely approximate) are the longest, the 

 lower pair are next in length, the lateral pair are sliortcst. The flowers are very promptly 

 reflexed. 



Loca. — Soledad, Monterey Co., Jones .3129; Calicnte, Kern Co.; Lancaster, Elmer 3G2.5 ; 

 Kramer, Mohave Desert, Jepson 5333 ; Barstow, Parish 9665 ; Calico Wash ne. of Barstow, Jepson 

 6702; Laws, Invo Co., neller 8183; Argus Mts., Hall <f Chandler 7095; Beaumont, Riverside Co., 

 K. J. Sinith 102 ; Whitewater, S. B. 4- W. F. Parish 20 ; Mecca, Parish 8473. Fallon, Nov., Blanche 

 Ross 43. 



Eefs. — TriELYPODllTM LONGiROSTRis Jepson, Man. 413 (1925). Sfreptanthus longirostris 

 Wats. Proc. Am. Acad. 25:127 (1890) ; Gray, Syn. Fl. 1^:170 (1895). S. longifolius var. glaber 

 Torr. Pac. R. Rep. 4:65 (1857), type loc. sandy hills, Colorado River, Ariz., Bigelow. Arabis 

 longirostris Wats.; B. & W. Bot. Cal. 1:31 (1876). Eulclisia longirostris Rydb. Bull. Torr. Club 

 33:142 (1906). Guillenia rostrata Greene, Lflts. 1:228 (1906). G. longirostris Greene; Hel. 

 Muhl. 2:200 (1906). Streptanthella longirostris Rydb. Fl. Rocky Mts. 364 (1917). 



7. T. brachycarpum Torr. (Fig. 132.) 

 Stem simple or branched, stoutish, 1^ to 6 feet 

 high; herbage glabrous and glaucous, or the 

 stems at base and the petioles of the basal leaves 

 hirsute, usually sparsely; blades of basal leaves 

 oblong or oblauceolate, sinuate-toothed, pin- 

 natifid or entire, 1 to 4^/2 inches long, on peti- 

 oles half as long; blades of cauline leaves nar- 

 row-lanceolate, mostly entire, sagittate-clasp- 

 ing, 1 to 2^/2 inches long; racemes spike-like, 

 very dense; pedicels in fruit 1 to IV2 lines long; 

 sepals broadly linear at first, linear-lanceolate 

 in anthesis, scarious-margined and somewhat 

 crisply margined; petals white, linear-elon- 

 gated, 21/2 to 3^ lines long, over twice or 

 nearly twice as long as the sepals; stamens ex- 

 serted; pods slender, terete, slightly knotted, 

 sharply beaked, ascending, from 6 to 12 lines 

 long. 



Sandy soil, mountain sides and valleys, 

 4800 to 7200 feet : north end or east slope of 

 the Sierra Nevada from Siskiyou Co. to Inyo 

 Co. East to Nevada. May- Aug. 



Fig. 132. Thelypodium brachy- 

 carpum Torr. a, base of plant, X % ; 

 6, infl., X Va ; c, fl., X 3 ; d, pod, X 11/2. 



Locs. — Siskiyou Co.: Yreka, W. L. Kleaver; Mon- 

 tague, Heller 8011; Shasta Valley, Butler 1850. 

 The plants east of the Sierra Nevada crest from Inyo Co. to Lassen Co., thence east into 

 Nevada, have been referred by E. B. Payson to T. crispum Greene. The descriptions of T. 

 brachycarpum and T. crispum as given by Payson (Ann. Mo. Bot. Gard. 9:263-4) are, with 

 herbarium sheets before one, practically identical except for character of the pedicels. He gives 

 for T. brachycarpum, "pedicels stout, divergent, 1-2 mm. long," for T. crispum, "pedicels slender, 

 erect, 3-5 mm. long." In specimens of T. crispum from nw. Cal. (Mono Lake, Brewer 1819 ; Purdy, 

 Sierra Co., Heller 4" Kennedy 8671; Milford, T. Brandegee; all determined as T. crispum by 

 Payson), the pedicels are 2 to 2^^ mm. long, none 3 to 5 mm. long. In general the pods are at first 

 spreading, tending to be ascending in age. In genuine T. brachycarpum, as represented by Butler 

 1850 (Shasta Valley), the type region, the pods are, in age, widely spreading but in Hall Sr Bab- 

 cock 4092 from the same locality they are ascending as in typical T. crispum. The pedicels in the 

 Siskiyou Co. material are more divergent and usually stouter than in the specimens referred to 

 T. crispum and on this character the more strictly transmontane representation (with slender 

 erect pedicels) may be segregated as var. crispum Jepson comb. n. The following specimens may 

 be cited: Amedee, Lassen Co., Davy; Milford, liassen Co., T. Brandegee ; Dixey Valley, Lassen 

 Co., Baker <S- Nutting ; Beckwith Pass, Jepson 7756; Purdy, Sierra Co., Heller Sr Kennedy 8671; 

 McFarland'a Mill, road to Hot Sprs., Placer Co., Sonne; Mono Lake, Brewer 1819; Bishop, Al- 



