71 PROCEEDINGS OF THE AMERICAN ACADEMY 



Pedilanthus macrocarpus, Benth. Growing in large masses, 

 the flowers and fruit bright crimson. A decoction of the plant is used 

 as an active cathartic. Mountains and hills about Los Augeles Bay. 

 (G05.) 



Euphorbia capitellata, Engelm., var. laxiflora. Differing 

 from the type of the species in the looser cymes, the mostly smaller 

 gland-appeudages, the glabrous capsules, and more sparingly toothed 

 leaves. In gardens (83, 142) and high in the mountains (210) about 

 Guaymas. Specimens from a sandy spit in the harbor (317) vary also 

 in having the narrow and narrowly acuminate leaves nearly all entire, 

 tlie involucres few in the cymes, and the stipules of the floral leaves 

 shorter and less dissected. Pringle's n. G99 of his 1885 collection in 

 Chihuahua, referred doubtfully to E. pycnanthemum, belongs ratlier to 

 this variety of E. capitellata. 



Euphorbia Brasiliensis, Lam. At Guaymas. (81, 82.) 



Euphorbia albomarginata, Torr. & Gray. At Guaymas. (93.) 



Euphorbia (Cham^syce^) intermixta. Annual, prostrate, 

 glabrous : stipules broadly triangular, entire ; leaves more or less 

 broadly oblong or oblong-ovate, obtuse or acutish, obliquely truncate 

 or subcuneate at base, 3 lines long or less, several times shorter than 

 the internodes : involucres solitary in the forks and axils, pedunculate, 

 turbinate-campanulate, -|- line long; glands dark brown, reniform. with 

 a usually conspicuous white or pinkish appendage : capsule glabrous, 

 rather acutely lobed : seeds (immature) pinkish, oblong, angled, 

 smooth. — Near E. cordifolia among the LeiosjyermcB. Guaymas. 

 (187, in part; distributed with E. glyptosperma.) 



Euphorbia trachysperma, Engelm. High mesas about Guay- 

 mas. (183, 319.) 



Euphorbia Magdalene, Benth. ? A low glabrous shrub (the 

 branches finely tomentulose), with slender elongated virgate branches: 

 leaves opposite, very shortly petiolate, oblong (2 to 4 lines long), ob- 

 tuse at both ends, shorter than the internodes (upon the short spurs 

 shorter, broadly elliptical, and exceeding the internodes) : involucres 

 solitary, terminal on the spurs, \ line long, the broad subreniform 

 glands and appendages entire: styles long, 2-parted : fruit unknown. 

 With little doubt the same as Bentham's species from Magdalena Bay, 

 though not fully agreeing with the description. At Muleje, in dry 

 ravines. (26.) Found also by Palmer in 1870 on Carmen Island. 



Euphorbia tomentulosa, Watson. With white glands and .ap- 

 pendages and green capsules, or pinkish, or dark purple; H to 3 

 feet high. Mountains; Los Angeles Bay and Guaymas. (216, 536.) 



