432 Rydberg : Rocky Mountain flora 



Sepals unequal, the lower longer ; hairs, at least some of them, stellate or branched, 



Ileteroihrix. 



THELYPODIOPSIS gen. nov. 



Biennials with rather thick and glaucous foliage and glabrous 

 except the lower part of the stem. Basal leaves spatulate or ob- 

 lanceolate, more or less toothed, with winged petioles ; stem-leaves 

 auriculate-clasping with rounded auricles. Sepals thin, erect or 

 ascending, not gibbous, more or less petaloid, linear or oblong. 

 Petals more or less clawed, white or purplish or in one species 

 yellow. Filaments distinct, slender, filiform or subulate ; anthers 

 long, linear, sagittate at the base, soon spirally curved. Pod slen- 

 der, terete, more or less torulose, usually with short stipe and 

 style ; stigma 2-lobed, the lobes expanded over the septum ; coty- 

 ledons obliquely incumbent. 



The first species of this genus as well as of the following 

 new genera is regarded as the type. 



Stipe very short, Jess than i mm. long or almost none ; petals white or tinged with 

 purple. 

 Style 2 mm. or nearly so. 



Pod 7-9 cm. long. T. elegans. 



Pod about 4 cm. long. 7'. Bakeri. 



Style less than i mm. long ; pod 5-7 cm. long. T. wyomingensis. 



Stipe 2-5 mm. long ; petals and sepals yellow. T. aurea. 



Thelypodiopsis elegans (M. E. Jones). 



Tlielypodiinii clcgaiis M. E. Jones, Zoe 4: 265. 1893. 



Thelypodiopsis Bakeri (Greene). 



Tlicly podium Bakeri Greene, PI. Baker. 3: 8. 1901. 



Thelypodiopsis wyomingensis (A. Nelson). 



StrcptantJius 7vyonii)igcnsis A. Nelson, Bull. Torrey Club 26 : 



126. 1899. 

 Thelypodiopsis aurea (Eastw.). 

 ThclypodiiiDi anrciiin Eastw. Zoe 2 : 227. 1891. 



Thelypodium Palmeri sp. nov. 



Biennial or perennial with a tap-root ; stem 3-5 dm. high, 

 sparingly hirsute below, glabrous above ; basal leaves oblanceo- 

 late or spatulate, 2—4 cm. long, more or less hirsute beneath, 

 especially on the veins ; stem-leaves sagittate, 2-4 cm. long, glab- 

 rous or nearly so ; inflorescence usually branched with ascending 

 branches ; pedicels nearly erect, 5-8 mm. long ; sepals oblong, 

 3-4 mm. long; petals 5-6 mm. long, white or rose; claw about 

 3 mm. long ; blade spatulate or oblanceolate ; pod about 2—5 cm. 

 long, I mm. wide. 



