246 BOTANY. 



glands with narrow or with longer, sometimes triangular, entire or dentate 

 or lobed, greenish or reddish appendages, or without any; seeds quadran- 

 gular-oblong, undulate and scrobiculate. — Santa IV. Rothrock (13), 1874; 

 number 1003 is the same from Arizona. Not rare from Western Texas, 

 through X<\\ .Mexico and Southern Colorado to Arizona. A diminutive, 

 suberect hush of many stems and branches, very variable in the width of 

 its leaves, but readily recognized by the characters enumerated. 



Euphorma (Amsoi'iiylli'm) polycarpa, Beiith. But. Sulph. 50; Bot. 

 Mex. Bound. 186; Boiss. 1. c. 44. — A perennial, often flowering in the first 

 year as an annual, prostrate or erectish, glabrous, sometimes pubescent 

 (or even tomentose in a variety), with orbicular-cordate or oblong entire 

 leaves, always with linear, delicately ciliate stipules; involucres axillary, 

 rarely crowded into few-flowered cymes ; appendages of the dark red (or, 

 when dry, black) glands large and conspicuous, or smaller; seeds gray- 

 reddish, linear-oblong, quadrangular, smooth or slightly undulate. The 

 typical, large-flowered, glabrous form is found principally along the Pacific 

 coast from Cape St. Lucas to the southern part of the State of California; 

 inland, and especially in the California Desert and up the Gila, where Dr. 

 Rothrock collected it in 1874, a larger, wide-spreading, very much ramified 

 form is found, with smaller, glabrous or pubescent, oblong or oblong-linear 

 leaves &— 1£" long, with smaller involucres, very small, almost or entirely 

 inappendiculate glands, and very short styles, but seeds of the same size 

 and form as in the type. The stipules of all forms are alike, linear, entire, 

 minutely ciliate. E. micromera, Boiss. /. c. 44, seems identical with this 

 last form, and we will have to consider E. melanadenia, Ton*. Pacif. R. R. 

 Rep. 4, 135, as a tomentose variety, as suggested by S. Watson; an inter- 

 mediate form is E. cinerascens, Engelm. Bot. Mex. Bound. 186. 



Euphorbia (Anisophtllum) serpyllifolia, Pers. Ench. 2, 14; Boiss. 

 I. c. 43; Gray, Man. 432; E. iruequilatera, Engelm. Bot. Mex. Bound. 187; 

 not Sonder. — Zufii, Rothrock, 1874 (173). An extremely variable species, 

 but readily recognized by its glabrous, obovate leaves, acute at the unequal 

 base, broader and serrulate at the rounded tip: stipules setaceously divided ; 

 involucres in lateral leafy clusters; seeds -ray. linear, acutely 4-angled, 

 slightly wrinkled or pitted. The closely allied E. glyptosperma, Engelm., 



