OF ARTS AND SCIENCES. 125 



1887; also by Mr. W. II. Shockley, August, 1888, in the White 

 Mountains of Mono County, California, at 11,000 feet altitude. 



Strei'tantiius (Euclisia) Lemjioni. Annual, glabrous, panic- 

 ulately branched: lower leaves unknown, the upper cauline lanceolate, 

 auricled at base ; rameal bracts ovate to orbicular, cordate-clasping 

 with very short lobes: flowers rather small (2 to 4 lines long), the 

 sepals acuminate with recurved or spreading tips ; petals narrow, 

 apparently white: filaments distinct; pods 2 or 3 inches long, narrow, 

 on short pedicels ; stigma sessile. — In the Santa Catarina Mountains, 

 Arizona; collected by Mr. J. G. Lemmon, 1880. 



Stukptanthus barbatus. Glabrous and glaucous ; stems ap- 

 parently several from a perennial (?) root, simple or at length branch- 

 ing : leaves crowded, uniform and nearly equal, cordate, sessile and 

 clasping, obtuse or acutish, 9 lines long or less ; floral bracts none : 

 flowers purple, 3 or 4 lines long ; sepals obtusish, setosely bearded 

 near the apex : filaments distinct : pods spreading, on pedicels 1 to 

 3 lines long, curved, 1 or 2 inches long by 1^ lines broad ; stigma 

 sessile or nearly so : seeds narrowly margined. — Sandy bottoms 

 along the upper Sacramento, first collected by the botanists of the 

 Wilkes Expedition (S. tortuosus, Gray in Torr. Bot. Wilkes, 227), 

 and rediscovered by Mr. Lemmon in 1879. 



Streptanthus Akizonicus. Annual or biennial (?), glabrous 

 and glaucous, usually stout and tall, branching : leaves rather thin, 

 entire or nearly so, acute, the lower oblong-lanceolate, petiolate, not 

 ciliate, the upper oblong- to narrowly lanceolate, with rounded auri- 

 cles : flowers pale ; sepals strongly saccate ; petals narrow, 6 or 7 

 lines long : filaments distinct : pods erect or ascending, 2 or 3 inches 

 long by 2 or 2| lines broad, obtuse or acute, with a broad sessile 

 2-lobed stigma: seeds very broadly winged. — In the mountains of 

 eouthern Arizona, collected by C. G. Pringle in 1881, and later by 

 S. G. Parish and J. G. Lemmon (n. 4170). 



Streptanthus * campestkis. Annual or biennial, glabrous and 



* The known species of Streptanthus may be grouped as follows — 

 § 1. EUSTREPTANTHUS. Flowers largo, the blade of the petals broad. 

 Filaments distinct. Pods erect or ascending. Glabrous annuals. 

 « Floral bracts conspicuous. 



1. S. BRACTEATUS, Gray. — Southwestern Texas. 



» « Floral bracts none or minute. 



2. S. MACCLATUs, Nutt. — .\rkansas and eastern Texas. 



3. S. PLATYCARPLS, Gray. — Western Texas to Sonora. 



