436 PROCEEDINGS OP THE AMERICAN ACADEMY 



AscLEPiAs ROSEA, HBK, Nov. Gen. & Spec. 3. 189. Rio Blanco, 

 in rich moist places ; June. (19.) 



AsCLEPiAS SETOSA, Benth. PI. Hartw. 24. Rio Blanco, in moist 

 rich soil; June. (20.) Also on hilltops under pines; October. 

 (740.) 



AsCLEPiAs CuRASSAViCA, Linn. Barranca. (138.) — " Plati- 

 taza" ; the milky juice is used as a remedy for catarrh. 



AsCLEPiAS MACROURA, Gray, n. sp. Facie A. glaucescenti sub- 

 similis, glaberrima (pedicellis puberulis exceptis) ; foliis ovali-oblongis 

 basi cordulata sessilibus (poll. 3-5-longis) ; pedunculis folia superanti- 

 bus; umbella 8-12-flora; petalis albo-viridulis (fere semipoUicaribus) 

 ovalibus; columna vix ulla; cucuUis erectis antheras parum excedenti- 

 bus lato-quadratis submembranaceis albidis intus a basi usque fissis 

 marginibus approximatis, crista costneformi omuino adnata in caudam 

 gracilem siepe circinatam cucuUo ipso suba^quilongam excurrente ; 

 antherarum alls basi auriculato-productis. — Rio Blanco, on hillsides, 

 ill flower only; August. (344.) A striking and apparently tall 

 species. The hoods would be nearly square if flattened out, with the 

 end slightly excised, but are tubular-convolute, their approximate mar- 

 gins perfectly straight and not at all auriculate or appendaged at 

 base ; the horn is represented by the long flexuous or involute tail. 



GoMPHOCARPUs Palmeri, Gray, n. sp. Multicaulis, subpedalis, 

 tomentoso-puberulus mox glabrescens ; foliis longo-linearibus sessili- 

 bus (majoribus 4-pollicaribus vix ultra lineam latis) ; umbellis sat 

 longe pediiuculatis laxifloris ; corolla (lin. 3 longa) cum calyce rubella; 

 cucuUis (albis cum linea rubella) lamina lingutieformi subcarinata cras- 

 siuscula a basi saccata parum dependente subito assurgente antheris 

 adasquante ; alls antherarum seraiovatis. — Rio Blanco, in rich damp 

 places; June. (21.) Fruit not seen. There is no crest or horn to 

 the hoods, the open-saccate portion of which rises to about the middle 

 of the dorsal portion or lamina, which seems to be, as it were, abruptly 

 assurgent. It is doubtless a congener of G. hypoleucus, Gray, and 

 like it only technically distinct from Asclepins. 



DiCTYANTHUS Pavonii, Decaisne in DC. Prodr. 8. G05. Bar- 

 ranca. (113.) 



DiOTTANTHUS STAPELi^FLORUS, Reichcnb., cx Walp. Ann. 3. 60, 

 as far as the character goes. Near D. parvijlorus, Hemsl., but co- 

 rolla larger and more funnelform, and leaves rather larger and more 

 petioled. The follicles (which were unknown in the genus) are in 

 this echinate. Guadalajara, in ravines ; July. (251.) 



GoNOLOBUS ATRATUS, Gray, n. sp. G. piloso, Benth., peraffinis, 



