ON SOUTH-AMEEICAN APOCTNACILE. 121 



4. Rhabdadenia biflora, Miill. PI. Bras. t. c. p. 175 : Echites Uflora, Jacq. Amer. p. 30j tab. 21 ; 

 A. DC. Prodr. viii. p. 450 ; Griseb. Fl. Br. W. Ind. p. 415 : Echites Ehrenbergii, Schlect, 

 Linn. xxvi. 666: Rhabdadenia Ehrenbergii, Miill. Linn. xxx. 454. In America tropicali: v, s. in 

 hb. Mus. Brit. ins. Carib. (Jacquin, typ.) j Cayenne (Sagot 387) ; Manglares de Sisal (Schott 813) ; 

 Jamaica (Dr. Wright) . 



A shrub, yielding a lactescent juice, witli scandent, slender, fistulous branches, often 

 climbing to a height of 20 feet ; branches with axils 2-3 in. apart ; leaves very patent, 

 obovate, acute at the base, rounded and mucronate at the apex, 2-3 in. long, 1-lJ in. 

 broad, on petioles 4t-6 lines long ; the peduncle of the axillary inflorescence is 6 lines 

 long, bearing 2 apical pedicels 6 Unes long, supported by acute bracteoles ; sepals sub- 

 equal, oval, 3 lines long, 2 lines broad, marked by parallel nerves and reticulated veins ; 

 the contracted portion of the tube of the corolla is 8 lines long, above it is funnel- 

 shaped and 8 lines long, 6 lines broad in the mouth; segments dolabriform, 9 lines 

 long, 7 Hues broad, with simple dextrorse convolution ; stamens seated on a pilose ring 

 in the mouth of the contracted portion of the tube ; filaments short, partially adnate ; 

 anthers obtusely bifid at the base, acute and pilose at the apex ; disk of 5 erect ovate 

 lobes, scarcely connate at the base, as long as the 2 free ovaries ; style slender ; clavuncle 

 ovate, 5-angular, 5-glandular, expanded at its base into a membranaceous umbraculiform 

 appendage ; 2 stigmata, small, terminal ; 2 follicles, terete, suberect, 3J in, long, 2 lines 

 thick, subcohering at the summit ; seeds linear, terminated at the apex by a long brush« 

 shaped caudal rostrum, as in Hh. Fohlii. 



5. Rhabdadenia campestris, nob. : Echites campestris, Veil. Flor. Flum. p. 113, Icon. iii. tab. 43 ; 



A. DC. Prodr. viii. 475 : Amblyanthera campestris, Miill. I. c. p. 149. Brasilia, prov. Rio de Janeiro 

 (Velloz, in apricis) : non vidi. 

 This is a subscandent species, with stoutish branches, and axils 2 in, apart ; leaves 

 elliptic, gradually acute towards the summit, narrower below the middle, rounded or 

 obsoletely cordate at the base, hirsute above, pubescent beneath, 4-6 in. long, 2-2| in. 

 broad, on petioles 3 lines long ; the inflorescence is terminal at the end of very young 

 branchlets, consisting of a stoutish pubescent peduncle 4 lines long, bearing a single 

 sessile orange-coloured flower; the sepals are lanceolate, pubescent, 6 lines long; the 

 fuimel-shaped tube of the corolla is contracted cylindrically at the base to a diameter of 

 3 lines, swelling upwards to the mouth, which is 6 lines broad, and is IJ in. long, 

 pubescent outside ; segments obliquely rounded, 11 lines long and broad, dextrorsely 

 convolute ; the 5 lobes of the disk are free, nearly as long as the ovaries. 



6. Rhabdadenia madida, nob. : Echites madida, Veil. Fl. Flum. 112, Icon. iii. tab. 42; A. DC. I. c. 



p. 474 : Amblyanthera madida, Miill. I. c. p. 150. In Brasilia, prov. Rio de Janeiro australiore in 



via Pacienca ad San Paulo tendens (Velloz, in sylvis madidis) : non vidi. 

 A species, without doubt, belonging to this genus, and near B. Pohlii, differing in its 

 broader leaves and solitary flower. In the latter species the basal lobes of the leaves 

 overlap one another, hiding the sinus ; in this species these lobes are rounder and broadly 

 gaping. It is a climbing glabrous plant, with slender twining branches, having its 

 axils about 3 in. apart ; the leaves are oblong, broadly cordate at the base, and terminate 



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