226 CALIFORNIA ACADEMY OF SCIENCES. 



carpels sharply keeled, seeds obtusely tetrangular, pinkish 

 when young, with irregular anastomosing ridges between 

 the angles; when full ripe cinnamon color, with the anasto- 

 mosing ridges almost broken up into tubercules. 



Whole plant of the general appearance of E. serpens. 

 Stems 1-1^ dm. long, diffusely branching, capsules 2 mm. 

 long, Ih mm. wide, seeds Ih mm. long. Near E. podadenia. 

 Purisima, February 12th. 



Euphorbia serpyllifolia Pers. (ench. bot., 2, p. 14). — 

 Comondu, February 15th. 



Euphorbia setiloba Engelm. (Pacif. K. R. Eept., 2, p. 

 364). — Purisima, February 14th. 



Euphorbia petrina Yr^atson. (Proc. Am. Acad., xxiv., 

 p. 75.)— San Esteban, April. 



Euphorbia Brandegei, sp. nov. Annual; prostrate spread- 

 ing, branches filiform, 2-4 cm. long, the internodes spar- 

 ingly pubescent, the nodes and terminal branchlets quite 

 hairy. Leaves ovate, the largest 3 mm. long, 2 mm. broad, 

 obtuse, unequal at the base, the larger few-dentate, the 

 smaller simply and sparingly crenulate, petioles about one- 

 third the length of the leaves; stipules represented by a 

 few cilia. Involucres turbinate, pedunculate, solitary in the 

 upper axils, hairy without and within, lobes triangular cil- 

 iolate; glands 4, reddish-brown, transverse oblong, concave; 

 appendages white, conspicuous, the margin crenulately and 

 irregularly 3-8 toothed. Capsule 1 mm. long, very hairy, 

 carpels keeled; stigmas unequally bipartite to the middle; 

 seeds elongated tetrangular, pointed, sharply 4-6 ridged 

 transversely including the angles. 



A very delicate species, near E. porttdana. — Magdalena 

 Island, January 21st. 



Euphorbia POLYCARPA, Benth. (Bot. Sulph. Voy., p. 50). 

 El Llano de Santana, May 9. The form (E. micromera 

 Boiss. D. C. Prod., xv., pars. 2, p. 44). — Magdalena 

 Island, January 15th. 



