372 PROCEEDINGS OP THE AMERICAN ACADEJIY 



half a line long, the segments white or pinkish with a green midveln. 

 — In the Cuntillas Mountains, Lower California, by Dr. E. Palmer 

 (n. 348 of 1875, distributed as E. gracile, var. ?), and in the same 

 recfion by C. R. Orcutt in 1882, and again in 1883. Differing from 

 tomentose forms of E. Buileyi in its stouter leafy and less ditiusely 

 branched habit, more ovate undulate leaves, broader involucres, etc. 



AuiSTOLOcniA (Eixomeia) sdbclausa. Stems low and slender 

 (10 to 15 inches high), numerous from an elongated thickened root, 

 sulcate, nearly glabrous: leaves cordate-ovate with a broad sinus, 

 obtuse or acutish, 3-nerved, short-pubescent, about an inch long, the 

 slender petiole 4 lines long: flowers, axillary, solitary, upon a short 

 pedicel (2 to 4 lines long), with a sessile ovate bract (3 lines long) 

 at the base of the pubescent 5-sulcate linear ovary (3 or 4 lines long) : 

 calyx pubescent, 1 to li- inches long, nearly straight or subfalcate, the 

 narrow lamina continuous with the tube (each 6 to 8 lines long), and 

 the somewhat dilated base of the tube partially closed at the throat by 

 a firm smooth reflexed circular diaphragm: stamens 5. — Collected at 

 Tarandacuao in the State of Guanajuato, Mexico; received from 

 Professor A. Duges, August, 1884. The root, which has about the 

 thickness of a finger, is used as a specific against cholera. 



Euphorbia (Anisophtllum) Rattani. Annual, prostrate, pubes- 

 cent throughout : leaves obliquely ovate, cordate at base, acutish, 

 entire, very shortly petiolate, 2 to 4 lines long: involucres solitary, 

 Bhortly pedicellate, campanulate, a line long; glands small, equal, 

 rounded and cup-shaped, yellowish, with a narrow white appendage : 

 capsule pubescent, a line long : seed quadrangular, irregularly rugose 

 or nearly smooth. — Found on Stony Creek, Colusa County, Cali- 

 fornia, by V. Rattan, June, 1884. Of the Chamcesyce group, and 

 somewhat resembling tomentose forms of E. pohjcarpa, but strictly 

 annual. 



TETRACOCCUS, Engelm. Mss. 



Flowers dioecious, apetalous. Starainate flowers: sepals G or 7, im- 

 bricate; stamens as many, iu one series, surrounding a central lobulated 

 di<k; filaments free, becoming elongated; anthers extrorse, erect, the 

 cells longitudinally dehiscent. Pistillate flowers : sepals G or 7, un- 

 equal (?) ; disk 4-lobed (?) ; ovary 4-celIed, the cells 2-ovnlt'd ; styles 

 4, slightly united at base, linear, undivided, spreading. Capsule 4- 

 lobed, the 2-valvcd cocci separating from a stout 4-angled columella. 

 Seeds strophiolate ; albumen fleshy; embryo straight, the cotyledons 

 broad and flat. — A shrub, with mostly opposite entire linear and 



