RYDBERG: Rocky MouUNTAIN FLORA 435 
STANLEYELLA gen. nov. 
._ Tall branched biennials. Leaves thin, the lower ones lyrately 
pinnatifid, the upper entire. Sepals thin, petaloid, white, oblong or 
mear, spreading or even reflexed in anthesis. Petals white, with 
oblanceolate or spatulate blades gradually tapering into a short 
claw. Filaments distinct, filiform; anthers linear, sagittate at the 
base, soon more or less spirally recurved. Pod slender, terete with 
short stipe and short style; stigma small, truncate or nearly so ; 
cotyledons incumbent and somewhat conduplicate. 
Stanleyella Wrightii (A. Gray) 
Thely podium Wrightii A. Gray. Pl. Wright. 1: 7. 1852. 
HETEROTHRIX (B. L. Robinson) Rydb., gen. nov. 
Thelypodiumn § Heterothrix B. L. Robinson, Syn. Fl. 1': 178. 
1895. 
Slender biennials, more or less pubescent at least below with 
stellate or branched hairs. Basal leaves oblanceolate, more or less 
toothed ; stem-leaves lance-linear or linear, entire. Racemes elon- 
gated, slender. Calyx more or less oblique, the lower sepals 
Heterothrix longifolia (Benth.) 
Streptanthus fongifolius Benth. Pl. Hartw. 10. 1839. 
Thely podium longifolium S. Wats. Bot. King’s Expl. 25. 1871. 
Heterothrix micrantha (A. Gray) 
Streptanthus micranthus A. Gray Pl. Fendl. 7. 1849. 
Lhelypodium micranthum §. Wats. Proc. Am. Acad. £7: 321. 
1882. 
CHLOROCRAMBE ¢gen. nov. 
Perennial glabrous herbs; stem simple at least up to the in- 
rescence acemes lax with slender horizontal or reflexed 
Pedicels. Leaves thin, petioled, with usually hastate blades. 
‘pals greenish, ascending. Petals greenish-white, with short 
_ Claws and lanceolate dentate blades. Anthers sagittate at the 
