191^] Brandegee: Plantae Mexicanae Purpusianae 367 



Euphorbia xeropoda sp. nov. 



Verisimiliter annua, glabra : caule crasso orecto striate superne 

 ramoso, 2-3 dm. alto: foliis obovatis acutis peuniveniis, basi longe 

 euneatis, nuirgine crenato-sei-ratis, utrin(|ue viridibus, usque ad 5.5 

 cm. longis, 3.5 cm. latis, intimis oppositis, snperioribus parvis vel 

 bractoiforniibus, petiolis ca. 3 mm. longis: inflorescentia ad ramulos 

 breves bracteoso-foliosos dissita ; involucrorum campanulatorum pedi- 

 eellis ea. 1 mm. longis, lol)is fimbi-iatis, glandulis 4 sti])itatis ti-ansverse 

 ellipticis margine dactylis ca. 10 instructis; stylis integris: capsula 

 glabra, seminibus tetragonis oblongis utrinque truncatis plus minusve 

 rugulosis, ea. 4 mm. longis, lateribus ca. 1.5 mm. latis, caruncula magna 

 stipitata, columella apice incrassata. 



One specimen only was collected between Picacho and San Gero- 

 nimo, Oaxaca, growing on a dry plain. No. 6901. Type, Herb. Univ. 

 Calif. No. 172970. 



Euphorbia (Anisophyllum) pueblensis sp. nov. 



E radice lignosa multicaulis : caulibus diifusis tenuibus adscenden- 

 tibus ramosis patenter pilosis : foliis breviter petiolatis ovato-acutis, 

 basi valde inaequalibus, utrinque pubescentibus, internodiis breviori- 

 bus, ca. 6 mm. longis, 4 mm. latis; stipulis setaceis: involucris solitariis 

 axillaribus pubescentibus breviter pedunculatis: glandulis 4-5, trans- 

 verse ellipticis sulcatis, appendicibus eis latioribus nunc integris nunc 

 bilobis aut inaequaliter trilobis, ca. 1 mm. longis: stylis usque ad 

 medium bitidis: capsula pubescenti, seminibus turgidis ol)tuse tetra- 

 gonis rugulosis, ai)ice acutis. 



The pubescence of this species is similar to that of E. acuta 

 Engelm., but is less dense. The leaves are not apiculate, are unequal 

 at the base and smaller, otherwise resembling those of that species. 

 The stems are more slender and more diffuse ; the seeds and append- 

 ages to the glands also differ. Collected at San Luis Tultitlanapa, 

 Puebla. No. 3425. Type, Herb. Univ. Calif. No. 136667. 



Euphorbia {Anisophyllum) bicapitata sp. nov. 



Annua prostrata: caidibus breviter pubescentibus usque ad 1 dm. 

 longis: foliis falcatis acutis serratis, basi oblicpiis, latere inferiori 

 auriculatis, utrinque parum i)ubescentibus, ca. 11 nun. longis, 4 mm. 

 latis; intei-nodiis longis; i)etiolis l)revissimis: cymis plci-umque duabus 

 caules terminantibus, pedunculis ca. 1 cm. longis: involucris parvis, 

 lobis laceratis, glandulis cujiulatis breviter stipitatis appendicibus 

 nullis vel angustis nuu'gine integris vel inaequaliter bilobatis, albis; 

 stylis breviter bitidis; capsula adpresse pubeseento : coccis dorso sub- 

 carinatis; seminibus oblongo-acutis, valde quadraiigulatis, faciebus 

 transverse imgosis. 



