54 University of California Publications in Botany [Vol. 6 



Euphorbia (Cyttarospermum) chiapensis sp. iiov. 



Glabra: eaulibiis ereetis, ca. 10dm.? altis; ramis oppositis, axillar- 

 ibiis. iLsqiie ad 15 cm. longis : foliis oppositis vel siiperioribus ternatis, 

 ovato-lanceolatis, basi cuneatis, margine integris, majorum laminis 

 ca. 4.5 cm. longis, 2.3 cm. latis, mucronulatis ; petiolis 2-A cm. longis, 

 filiformibiis: cymis terminalibns vel axillaribus, 4-10-floris; pedicellis 

 ca. 2 nnn. longis; invokicris ca. 1mm. altis, puberulis; glandulis 5 

 oblougis, appendicibus 2, anguste linearibus, ca. 1 mm. longis, in- 

 structis; stylis bipartitis. Fructus deest. 



Collected in rocky woods on Sierra de Tonala. No. 6895. Type, 

 Herb. Univ. Calif., No. 172975. 



CupHorbia (Cyttarospermum) enalla sp. nov. 



Herbacea : ramis sulcatis, pubescentibus. siiperioribus oppositis vel 

 ternatis, laminis ovato-acutis, usque ad 6 cm. longis, 3 cm. latis, 

 utrinque parce pubescentibus ; petiolis 1-5 cm. longis : cymis termin- 

 alibns; pedunculis ca. 1.5 em. longis pubescentibus; pedicellis brev- 

 ibus : involucris campanulatis, pubescentibus, ca. 1 mm. altis ; lobis 

 fimbriatis; glandulis 4, appendicibus albis. crenatis, quam iis lati- 

 oribus ; stylis bipartitis : capsula profunde sulcata, glabra ; seminibus 

 ovatis, favoso-foveolatis. 



This species was distributed under the not well-chosen name 

 Euphorbia tetradenia. Collected on Cerro del Boqueron. No. 7035. 

 Type, Herb. Univ. Calif.. No. 173056. 



Euphorbia (Alectoroctonum) padifolia sp. nov. 



Fruticulus, late ramosus : ramis glabris : foliis ellipticis, basi 

 acutis, utrinque glabris, laminis ca. 2.5 cm. longis, 1.5 cm. latis, 

 petiolis ca. 5 nun. longis: cymis terminalibus. brevibus, paucifloris; 

 involucris campanulatis, pubescentibus, glandulis concavis 5, appen- 

 dicibus albis minute crenatis latioribvis ; stylis brevibus. bifidis ; 

 capsula glabra, coccis dorso rotundatis; seminibus ovatis, rugosis. 



This species is near E. SchlccJttoidalii Boiss., differing conspic- 

 uously on account of its shorter petioles and concave glands. The 

 leaves have fallen from the specimens, but they appear to have been 

 opposite and ternate. Collected on dry, rocky plains Picacho — San 

 Geroniiiio. Oaxaca. No. 6950. Type, Herb. Univ. Calif., No. 173014. 



