April, 1916. Euphokbiace^e — Millspaugh 417 



Aklema plicata (Wats.) 



Euphorbia plicata Watson Proc. Am. Acad. 21:438. 



Aklema Scotana (Schlecht.) 



Alectoroctonum Scotanum Schlecht. in Linn. 19:252. 

 Euphorbia Scotana Boiss. DC. Prodr. 15:60. 



Aklema tricolor (Greenm.) 



Euphorbia tricolor Greenm. Proc. Am. Acad. 33:479. 



Aklema Xanti (Engelm.) 



Euphorbia Xanti Engelm. Boiss. DC. Prodr. 15:62. 



Euphorbia gymnoclada Engelm. Proc. Am. Acad. 5:171, non Boiss. 



Aklema yavalquahuitl (Boiss.) 



Alectoroctonum yavalquahuitl Schlecht. in Linn. 19:252. 



Acalypha flagellata sp. nov. 



A dioecious shrub, 2-5 meters high, glabrous or nearly so, with terete, 

 pithy branches, large leaves (7.5 x 12 cm.) and very long spikes (15-35 

 cm.). 



Stipules leafy, narrowly ovate-lanceolate, serrate, apiculate, 1-2 cm. 

 long; petioles 6-7 cm. long; blade palmately 5-veined, ovate, acimiinate, 

 thin, minutely wrinkle-pitted in drying, crenate-dentate, each tooth 

 mucronate. Infloresence in long, simple, lash-like, axillary spikes often 

 in pairs on the male shrubs though generally single, rarely one monoecious 

 spike appears, this always on the female shrub. Female flowers single, 

 on a long, filamentous pedicel (8-12 mm.); pedicel bibracteate, pilose; 

 calyx 4-parted the lobes linear-lanceolate, ciliate, acute; ovary hairy and 

 stalked- tuberculate; stylar column glanduliferous, turbinate, the upper 

 portion cut into three lobes from each of which issues a fascicle of six 

 long, filiform, transparent stigmas. Male flowers densely fasciculate 

 on slender, cylindrical spikes, very short pedicellate; sepals 4, scaphoid, 

 minute, caducous; stamens 8, filaments ligulate, ciliate. Capsule 5 mm. 

 diam. deeply tricoccous the cocci globular, strongly marked by the line 

 of dehiscence, scurfy and stalked-glanduliferous-tuberculate beneath; 

 seed red-brown, globose, apiculate, 1.2 mm. diameter, minutely papil- 

 late-carunculate, the surface minutely puncticulate. 



Type station Buena Vista Xbac, Yucatan, Gaunter, September 1896, 

 iioy (Type in herb. Field Museum, cat. no. 438,224). Also gathered by 

 Dr. Gaumer at Chichankanab 2iy8, 21'jg. 



Acaljrpha simplicissima sp. nov. 



An erect, simple, slender annual about 4.5 cm. high. Stem terete, 

 crispidulous-hairy. Petioles filiform about the length of the thin, ovate, 



