1921] Smiley: Flora of the Sierra Nevada of California 197 



2. CORYDALIS 



1. Corydalis Caseana Gray, Proc. Am. Acad., vol. 10, p. 69. 1874. 



C. Bidwelliae Wats., Bot. Calif., vol. 2, p. 429. 1880. 



Type locality. "At the 'Big Spring' in Big Meadows, Plumas 

 Co." 



Range. Northern Sierra Nevada. 



Zone. Transition and Canadian. 



Specimens examined. Jameson Creek, Plumas County, 6,300 feet, 

 Hall 9308. 



While our species is a component of the Transition or lowest Cana- 

 dian floras, the nearly allied C. Brandegei Wats, of Utah and western 

 Colorado is distinctly boreal, rising to 11,000 feet in the Wasatch (see 

 Jones, Bot. Gaz., vol. 5, p. 153, as "C. (/aveona"), and the other species 

 of this group, C. Cusickii Wats., of northeastern Oregon and western 

 Idaho, is also high montane. 



26, CEUCIFEEAE (MUSTARD FAMILY) 

 Land plants. 



Pods short (silicles). 



Pods globose 1. Lesquerella 



Pods flattened parallel to the septum 2. Draba 



Pods flattened at right angles to the septum 3. Thlaspi 



Pods long (siliques). 



Pods terete (very slightly compressed in one species of Erysimum). 

 Leaves simple. 



Flowers large 4. Erysimum 



Flowers small 5. Barbarea 



Leaves compound 6. Sisymbrium 



Pods distinctly flattened parallel to the septum. 



Valves nerveless; leaves all petioled 7. Cardamine 



Valves 1-nerved; cauline leaves sessile. 



Pods lanceolate with valves obviously reticulate* 8. Parrya 



Pods linear with valves nearly or quite plane. 



Petals flat 9. Arabis 



Petals twisted 10. Streptanthus 



Water plant growing submerged; dwarf aquatic 11. Subularia 



1. LESQUERELLA. 



1. Lesquerella Kingii Wats., Proc. Am. Acad., vol. 23, p. 251. 



1888. 



Vesicaria Kingii Wats., Proc. Am. Acad., vol. 20, p. 353. 1885. 

 Type locality. "West Humboldt Mountains, Nevada." 

 Range. Eastern Oregon to Nevada and on the east side of the 

 Sierra Nevada to the Tahoe region. 

 Zone. Canadian ? 



* Arabis platysperma might be referred here, but is at once known from our 

 only species of Parrya, with dense stellate pubescence, by its glaucous and 

 nearly glabrous foliage. 



