246 BRASSICACEAE 



11. Thelypodium Lemmonii Greene. Lemmon's Thelypodium. Fig. 1933. 



Thelypodium Lemmonii Greene, W. Amer. Sci. 3: 156. 1887. 

 Catilanthus anceps Payson, Ann. Mo. Bot. Gard. 9: 303. 1923. 



Annual, glabrous and glaucous or sparsely pilose near the base, the stems erect, 6-18 dm. 

 high Basal and lower stem leaves narrowed to a short petiole, lanceolate, sinuate-dentate, often 

 deeply lobed near the base, 6-15 cm. long; upper leaves reduced; inflorescence shortly racemose, 

 lax- pedicels slender, at first horizontal, later reflexed or ascending, 5-6 mm. long; sepals 

 spreading purple, margins scarious, oblong, obtuse, 3-4 mm. long ; petals pale, oblanceolate, 4-5 

 mm. long'; pods erect or pendent, terete, glabrous or sparsely hirsute, 3-5 cm. long ; style taper- 

 ing, 2-3 mm. long. 



Upper Sonoran Zone; Inner Coast Ranges, San Joaquin County to San Luis Obispo County, California. 

 Type locality: Lemmon's Ranch in the mountains of San Luis Obispo County. March-April. 



12. Thelypodium lasiophyllum (Hook. & Arn.) Greene. California 



Mustard. Fig. 1934. 



Turritis lasiophylla Hook. & Arn. Bot. Beechey 321. 1841. 

 Sisymbrium reflcxum, Nutt. Proc. Acad. Phila. 4: 25. 1850. 

 Thelypodium lasiophyllum Greene, Bull. Torrey Club 13: 142. 1886. 

 Microsisymbrium lasiophyllum O. E. Schulz, Pflanzenreich 4 105 : 162. 1924. 



Annual, more or less hirsute with simple or forked hairs, rarely glabrous, the stems erect, 

 3-20 dm. high. Leaves petioled, the lower irregularly pinnatifid with divaricate, obtuse or acute 

 segments, the upper reduced ; inflorescence corymbose, rapidly elongating at maturity ; pedicels 

 2-4 mm. 'long, at first ascending, in age usually becoming strongly recurved ; sepals oblong, 3-4 

 mm. long; petals white or light yellow, narrowly spatulate, about 6 mm. long; pods reflexed, 

 terete, 3-6 cm. long ; style about 1 mm. long ; stigma small, circular. 



Upper and Lower Sonoran Zones; western Washington to northern Lower California. Type locality: 

 "California." Jan.-june. 



Thelypodium lasiophyllum var. inalienum Robinson in A. Gray, Syn. Fl. N. Amer. I 1 : 177. 1895. 

 (Sisymbrium acuticarpum M. E. Jones.) Differs from the typical form in having erect rather than reflexed 

 pods. Occurs throughout the range of the typical species but is particularly abundant near San Francisco. 



Thelypodium lasiophyllum var. rigidum (Greene) Robinson, loc. cit. Stout and very rigid, 3-10 dm. 

 high, glabrous above; pods ascending, stout, on very short, stout pedicels. Mostly in north-central California 

 and western Nevada. 



Thelypodium lasiophyllum var. utahense (Rydb.) Jepson, Man. Fl. PI. Calif. 413. 1925. Glabrous or 

 nearly so; leaves thin, lobes usually rounded and obtuse; pods reflexed, usually curved outward. Interior desert 

 region from Utah and Nevada to southern California. 



4. SCHOENOCRAMBE Greene, Pittonia 3: 124. 1896. 



Glabrous or inconspicuously pubescent perennials, with creeping rootstocks, the sterns 

 and branches slender, broom-like. Leaves rather few, narrow, entire or pinnatifid, sessile 

 or petioled. Flowers racemose; sepals slightly saccate, thin and colored; petals yellow, 

 rather showy. Pods terete, elongated; stigmas 2-lobed. Cotyledons incumbent. [Name 

 from the Greek words meaning rush and a kind of cabbage.] 



A genus of 3 or 4 closely related species, natives of the Rocky Mountains and Great Basin regions. Type 

 species, Schoenocrambe linifolia (Nutt.) Greene. 



1. Schoenocrambe linifolia (Nutt.) Greene. Schoenocrambe or Rush 



Mustard. Fig. 1935. 



Nasturtium linifolium Nutt. Journ. Acad. Phila. 7: 12. 1834. 

 Sisymbrium linifolium Nutt. in Torr. & Gray, N. Amer. Fl. 1: 91. 1838. 

 Schoenocrambe linifolia Greene, Pittonia 3: 127. 1896. 

 Schoenocrambe pinnata Greene, Pittonia 3: 127. 1896. 



Plants at first simple, freely branching in age, glaucous and glabrous, the stems and 

 branches slender, 3-5 dm. high. Leaves linear or linear-lanceolate, narrowed to the base, entire 

 or the lower pinnatifid ; racemes becoming elongated ; pedicels 4-6 mm. long ; sepals 5 mm. long ; 

 petals 8-10 mm. long; pods ascending, 2.5-4 cm. long, 1 mm. broad. 



Dry rocky hillsides, Upper Sonoran Zone; eastern Washington and Oregon to Nevada, Wyoming, and 

 New Mexico. Type locality: "Head of Salmon River, in dry soils," Montana. May-July. 



5. STREPT ANTHUS Nutt. Journ. Acad. Phila. 5 : 209. 1825. 



Glabrous or pubescent, annual or perennial herbs, the pubescence, when present, un- 

 branched. Leaves, at least the upper, usually clasping the stem. Flowering inflorescence 

 usually racemose rather than corymbose. Sepals often brightly colored, sometimes dis- 

 similar. Petals various, often narrow with crisped blade. Stamens often in 3 pairs ac- 

 cording to length, the longest pair frequently connate by their filaments and bearing 

 reduced or abortive anthers. Fruiting inflorescence racemose, elongating, sometimes more 

 or less bracteate. Pods linear, flattened parallel to the septum, erect, divaricate or pendent, 

 sessile or with a short, thick stipe. Style usually short. Stigma entire or inconspicuously 



