OF ARTS AND SCIENCES. 395 



streams near Batopilas, climbing over bushes, Palmer, 5. Has the 

 long peduncles and nearly the foliage of P. viminalis, but a minute 

 pubescence, and the exterior crown much more manifest. The gravid 

 ovary is ovate and densely canescent-tomentose. But a follicle accom- 

 panying our specimen is slender-fusiform and glabrous. 



Philibertia elegans, Gray, Syn. Fl. ii.^ 87, under P. Torreyi. 

 The latter species is distinguished from the former, not so much by the 

 characters assigned in the work cited as by the very much thickened 

 pieces of the inner corona. The specimens of P. elegans collected by 

 Pringle in Chihuahua are very pubescent, and the umbels many- 

 flowered. The divisions or scales of the inner crown in this species, 

 when fresh or freshened by soaking, are seen to be " rotund," as de- 

 scribed by Decaisne, pointless, and decidedly flat. The peduncles vary 

 in length, are sometimes short, but never much longer than the pedicels. 

 P. hicolor (^Sarcostemma hicolor, Decaisne), which Hemsley unites with 

 P. elegans, may be a variety of it ; but it has, as described, sessile um- 

 bels and scales of the inner corona ovate with an acumination. With 

 this agrees Bourgeau's no. 318 from Santa Fe in the valley of Mexico, 

 except that these scales are only mucronate-apiculate ; also Schaflfner's 

 no. 640, in which they are less apiculate. 



Philibertia biloba, the Sarcostemma bilohum, Hook. & Arn. 

 Bot. Beech. 438, has probably been wrongly suppressed in Hemsley, 

 Biol. Centr.-Am. Bot. ii. 318, although he should have had the original 

 at hand. It comes from Acapulco only, and is said to have the divis- 

 ions of the stamineal crown ovato-triangular. Those of P. cynan- 

 choides (of widely different habitat) are broadly oval, very obtuse and 

 turgid. The following, from the eastern side of Mexico, may be more 

 like P. biloba. 



Philibertia Ervendbergii. Volubilis, undique puberula ; foliis 

 ovato-cordatis (sinu aperto lobis rotundatis) tenuiter acuminulatis pa- 

 rum sesquipollicaribus ; umbellis pedunculatis ; corollas glabelhe lobis 

 ovato-ellipticis obtusis (lin. 3-4 longis) viridulis intus linea purpurea 

 notatis mox reflexis ; corona exteriore annulari conspicua gynoste- 

 gium fere lineam longum a^quante, interiore e squamis crassiusculis 

 verticalibus latissime oblique ovatis apice libero acutiusculis antheris 

 parum brevioribus. — Sarcostemma elegans, Gray, Proc. Am. Acad. 

 V. 187. — Wartenberg, near Tantoyuca, Mexico, Ercendberg, coll. 

 no. 174. The following species also appears to be new: — 



PiirLiBERTiA Fendleri. Volubilis, fere glabra; foliis sinu an- 

 gusto profuudo cordatis ovatis subito acuminatis (2-3-pollicanbus) ; 

 pedunculo pedicellisque urabellaj multifloras elongatis ; corolhc fere 



