450 PROCEEDINGS OF THE AMERICAN ACADEMY 



Euphorbia Francoana, Boiss. Stems very succulent. Tequila, 

 in shaded ravines. (387.) 



Euphorbia plicata, Watson. A form (4 to 6 feet high) with 

 the appendages usually denticulate, and the floral leaves like the cuu- 

 line ; involucres mostly sterile. Chapala, on hilltops. (710, 720.) — 

 The species is near E. Xanii, Engelm., which has similar plicate 

 glands, but its leaves are small and linear, the inflorescence less dense, 

 and the appendages of the glands much longer. 



Euphorbia sPHiERORRHizA, Benth. Two feet high ; appendages 

 white becoming pink ; seeds subglobose and smooth. Rio Blanco, on 

 hillsides ; July. (158 ) 



Euphorbia radians, Benth. Rio Blanco, on grassy hillsides; 

 July. (749.) 



Jatropha cordata, Muell. Arg. A shrub, 6 to 10 feet high; juice 

 yellowish, soon drying to a sulphur-colored powder. Barranca. (114.) 



Jatropha angustidens, Muell. Arg. About 2 feet high; flowers 

 very fragrant. Barranca, on mountains. (141.) 



Crotox repens, Schleclit. A small shrub. Rio Blanco, on 

 shady hillsides ; August. (329.) 



Croton ciliato-glandulosus, Ort. A shrub, 4 feet high. 

 Guadalajara, in ravines ; July. (273.) 



Croton ? An apparently dioecious shrub, 6 feet high, with 



lanceolate acuminate eglandular leaves (1 to Ih inches long), entire, 

 without stipules, nearly glabrous above, finely stellate-pubescent be- 

 neath : male racemes very slender and elongated, loose, the very 

 slender pedicels 1 to 3 lines long ; sepals and petals 5 ; stamens about 

 15 on a very villous receptacle. Barranca. (93.) — A strongly 

 marked species, but not identified in the absence of fruit. 



Croton ? A stellately scabrous shrub, 2 feet high, the young 



shoots and leaves very densely white stellate-tomentose ; leaves thin, 

 ovate- or oblong-lanceolate, acuminate, biglandular, serrulate, sparingly 

 strigose-scabrous above, stellately so on the veios beneath ; petioles 

 rough, 2 to 10 lines long: spikes sessile, the numerous female flowers 

 crowded at the base; calyx-lobes short, triangular, glabrous: ovaries 

 stellately pubescent and hispid; styles elongated, bifid. Chapala, on 

 stream banks. (706.) 



Manihot angustiloba, Muell. Arg. A shrub, 4 feet high; 

 staminate calyx lemon-color, 6 to 9 lines long. Barranca. (142.) — 

 Rio Blanco, on shady hillsides; July. (156.) 



AcAEYPHA SESSiLiFOLiA. Dioecious, with numerous subdecum- 

 bent herbaceous stems (a foot high or less) from a woody rootstock. 



