ASCLEPIADEA, 319 
7. Philibertia linearis, A. Gr. in Proc. Am. Acad. xii. p. 64; Synop. Fl. N. 
Am, ii. p. 88. 
Sarcostemma lineare, Dene. in Benth. Pl. Hartw. p. 25; DC. Prodr. viii. p. 539. 
Arizona.—Norta Mexico; Sovran Mexico, Zimapan (Coulter, 998), Leon (Hartweg, 
217). Hb. Kew. 
Var. heterophylla, A. Gr. Synop. Fl. N. Am. ii. p. 88. 
Sarcostemma heterophylium, Torr. Bot. U.S. & Mex. Bound. Surv. p. 161. 
Catirornia; Anrizona.—Norra Mexico, Sonora and Chihuahua (Wright), Parras, 
Coahuila (Palmer). Hb. Kew. 
8. Philibertia lurida, Hemsley. 
Sarcostemma (Ceramanthus) luridum, Kze. in Linnea, xx. p. 26. 
MEXICO. 
9. Philibertia odorata, Hemsley, n. sp. 
Volubilis, omnino hirsuta, foliis orbiculari-cordatis abrupte acuminatis, cymis 6-12-floris breviter 
pedunculatis, corona exteriore annulari undulata, interioris squamis inflatis longioribus quam 
anthere, polliniis lineari-oblongis, ovariis glabris. 
Frutex volubilis, omnino hirsutus, ramulis teretibus, graciliusculis, pilosulis. Folia membranacea, 
longiuscule petiolata, orbiculari-cordata, 14—2-pollicaria, abrupte lineari-acuminata, integra, 
supra pilosula, subtus dense pubescentia, pallidiora, petiolo gracili ad pollicari. Flores (odorati, 
Salvin) 7-8 lineas diametro, in cymas pedunculatas umbelliformes dispositi; cymz 6-12-flore ; 
pedunculi ad pollicares; pedicelli 6-8 lineas longi, graciles; calyx 5-partitus, segmentis 
angustis, acutis, ad 3 lineas longis; corolla subrotata, alte 5-partita, extus pilosa, segmentis 
ovato-oblongis, obtusis; corona exterior annularis, undulata; squame corone interioris mem- 
branaceze, inflatz, antheris longiores; pollinia lineari-oblonga, tenuia; ovaria glabra; stigma 
apice rostro brevissime bifido instructum. Folliculi desunt. 
GuATEMALA, Duefias, 5000 feet (Salvin). Hb. Kew. 
10. Philibertia pavoni, Hemsley, n. sp. 
Volubilis, foliis oblongo-cordatis vel ovato-cordatis acuminatis supra pilosulis subtus dense argenteo- 
velutinis, cymis usque 30-floris longiuscule pedunculatis, pedicellis gracilibus, floribus medio- 
cribus, calyce parvo, corolla subrotata extus hirsuta, corona exteriore annulari brevi, interioris 
squamis inflatis, brevioribus quam anthere, polliniis lineari-oblongis, ovariis incanis. 
Frutex volubilis, ramulis teretibus, graciliusculis, primum incanis sed cito glabrescentibus. Folia 
membranacea, petiolata, oblongo-cordata vel ovato-cordata, 2—4-pollicaria, acute acuminata, 
supra viridia, pilosula, subtus dense argenteo-velutina, integra, leviter undulata. Flores 7-9 
lineas diametro, in cymas pedunculatas umbelliformes dispositi; cymz usque 30-flore sed szepe 
-pauciores; pedunculi 2—4-pollicares; pedicelli 1-1}-pollicares, graciles; calyx parvus, 5-par- 
titus, segmentis acutis, 14-2 lineas longis; corolla subrotata, alte 5-partita, extus hirsuta, 
segmentis ovato-lanceolatis, acutis; corona exterior annularis, brevis; squame coronz inte- 
rioris membranacee, inflate, antheris breviores; pollinia lineari-oblonga; ovaria incana; 
stigma apice rostro brevissimi bifido instructum. Folliculi desunt. 
Souta Muxico, Oaxaca ( Ghiesbreght, 200), without locality (Pavon). Hb. Kew. 
This is evidently allied to P. pannosa, and possibly the same species, though it has 
not the folia margine crispata et stigma apiculatum ascribed to that species. 
