NORTH AMERICAN EUPHORBIACE^. 229 



( I -? ) 



Euphorbia Comonduana, sp. no v. Frutescent, glabrous 

 stems ascending, bark in whitish stri^ covering ahnost 

 completely the pinkish inner layer; branchlets small, of an- 

 nual growth, nearly alternate, and given up completely to 

 the alternate or more or less fasciculate leaves. Leaves 

 orbicular, thin, on long filiform petioles, obtuse or slightly 

 retuse, pinnately veined, entire; stij)ules lanceolate, ciliate; 

 involucres solitary at the ends of the branches, shallow, 

 turbinate, glabrous, pedunculate; lobes triangular, few fibril- 

 late; glands, 5, greenish-brown, thin, plane, circular, each 

 folded upward upon itself; appendages grass-green, irregu- 

 larly 5-9 toothed, mostly of the form of a lobster's claw; 

 stigmas short bilabiate, the labia circinate: bracts be- 

 tween the male fiowers numerous, plumose. Capsule (im- 

 mature) glabrous, deeply trisulcate, carpels strongly keeled, 

 seeds 



Leaves from 1J-2J cm. in diameter, petioles from 6 mm. 

 to 2 cm. long, generally of the length of the blade, inter- 

 nodes about 3 cm. long, branchlets l-2i cm. long, much 

 reduced as compared with the stout stems. This curious 

 species stands by itself as a type of what may prove a new 

 section in Euphorbia. The absence of mature fruit and 

 seeds is deeply deplored. — Comondu, March 23d. 



(§ Tricherostigma.) 



EuPHOEBiA HiNDSiANA Benth. ? (Bot. Sulph. Voy., p. 51.) 

 As far as Boissier's description goes for this species found 

 at Cape St. Lucas and E. Califormca, at Magdalena Bay, 

 these specimens embrace some of the characters of both. 

 They have the stems, leaves, petioles, capsules and carpels of 

 E. Hindsiana, and the involucres and all that is included in 

 them of E. Californica. The seeds of the former are de- 

 scribed as ^' albido-foveolato," where the latter are said to be 

 simply *' clepresso-pundato." In our specimens we find both 

 kinds in one capsule; age will account for the difference 



