MUSTARD FAMILY 



257 



scarious-margined, 10-15 mm. long; petals purplish or brownish, broadly linear, channelled, 

 15-20 mm. long; pods erect or ascending, rather stout, 10-13 cm. long; stigma broadly 2-lobed, 

 the lobes nearly 1 mm. long. 



Upper Sonoran and Transition Zones; Clark Mountains, Inyo County, California, to western Nevada, 

 Wyoming, and Colorado. Type locality: "East shore of Salt Lake, Utah." June-July. 



12. Caulanthus glaucus S. Wats. Glaucous Caulanthus. Fig. 1967. 



Caulanthus glaucus S. Wats. Proc. Amer. Acad. 17: 364. 1882. 

 Streptanthus glaucus Jepson, Man. Fl. PI. Calif. 415. 1925. 



Glabrous and conspicuously glaucous throughout, the stem erect, simple or sparingly 

 branched, rather stout, 3-8 dm. high. Lower leaves orbicular or ovate, obtuse, 3.5-7 cm. long, 

 sometimes lobed at the base, these as well as the narrower upper leaves conspicuously petioled ; 

 inflorescence racemose; pedicels slender, 7-15 mm. long, erect or ascending; sepals greenish 

 or purplish, not saccate, 8-10 mm. long; petals greenish, broadly linear, recurved at the apex, 

 about 1.5 cm. long; pods widely divaricate, frequently arcuate, 6-8 cm. long, rather slender; 

 stigma deeply 2-lobed. 



Rocky slopes, Upper Sonoran and Transition Zones; southeastern Oregon, western Nevada, and the White 

 Mountains, California, east to southern Utah. Type locality: Candelaria, Esmeralda County, Nevada. May. 



13. Caulanthus pilosus S. Wats. Hairy Caulanthus. Fig. 1968. 



Caulanthus pilosus S. Wats. Bot. King Expl. 27. 1871. 

 Streptanthus pilosus Jepson, Man. Fl. PI. Calif. 415. 1925. 



Biennial or short-lived perennial, sparingly pilose to densely hirsute, especially near the base. 



Lower leaves petioled, coarsely toothed or pinnatifid, 4-15 cm. long, the upper leaves reduced, 



narrow ; inflorescence racemose ; pedicels ascending, 5-8 mm. long ; sepals green or purplish, 



more or less densely pilose, scarious-margined, 5-8 mm. long; petals white or veined with 



purple, narrowly spatulate, 7-10 mm. long ; pods ascending or widely divaricate, frequently 



arcuate, 6-13 cm. long; stigma conspicuously 2-lobed. 



Upper Sonoran Zone; southwestern Idaho and eastern Oregon to western Nevada and Darwin Valley, 

 Inyo County, California. Type locality: Truckee Valley, Nevada. April-June. 



8. SUBULARIA L. Sp. PI. 642. 1753. 



Small submerged aquatic annual herbs, with basal subulate leaves, and minute white 

 racemose flowers terminating a naked scape. Stamens 6. Style none. Silicles short- 

 stipitate, ovoid to spherical, the valves convex, 1 -ribbed dorsally, the partition broad. 

 Seeds few in each cell, marginless ; cotyledons narrow, incumbent. [Name Latin, mean- 

 ing awl, from the awl-shaped leaves.] 



A monotypic species of the northern hemisphere. 



1. Subularia aquatica L. Water Awlwort. Fig. 1969. 



Subularia aquatica L. Sp. PI. 642. 1752. 



Tufted, glabrous, the scapes 3-10 cm. high, simple. Leaves nearly cylindrical, 15-30 mm. 



long ; flowers few ; pedicels slender, 2-6 mm. long ; pods 2-3 mm. long. 



Growing in shallow water in the margins of clear cold lakes, Canadian Zone; British Columbia to the 

 Sierra Nevada, California, east to Newfoundland, Maine, and Wyoming. Type locality: European. June-Aug. 



1961 

 1961. Caulanthus Coulteri 



1962 



1962. Caulanthus Lemmonii 



1963. Caulanthus inflatus 



