ON SOUTH-AMERICAN APOCYNACE. 123 
2 flowers on pedicels one third of its length; flowers large, yellow; sepals small, acute ; 
tube of corolla narrowly cylindrical below for one third of its length, suddenly cam- 
panulate above; segments half as long as the tube, expanded, inequilaterally oblong ; 
fructiferous peduncle 6 lines long, the pedicels 3 lines long; the persistent sepals 14 line 
long; 2 terete follicles acute at both ends, very divaricate, subreflected, 44 in. long, 
3 lines broad in the middle; seeds like those of R. Pohlii. 
9. RHABDADENIA MACROSTOMA, Müll. Linn. xxx. 435: Echites macrostoma, Benth. in Hook. Journ. 
Bot. iii. p. 248; A. DC. Prodr. viii. 453. In Guiana Brit. et Surinam (Schomb. 329 and 556) : 
non vidi. 
A scandent plant with oval mucronulate leaves, obsoletely pubescent above, rufes- 
cently tomentellous beneath, 14-34 in. long, 10-18 lines broad, on petioles 2-3 lines 
long; peduncle of the axillary inflorescence longer than the leaves, often bearing 2 
flowers on pedicels 2-3 lines long; sepals linear-subulate, 14 line long, reflexed; corolla 
rose-coloured ; contracted portion of tube 6 lines long, inflated portion 20 lines long, 
8 lines broad, subcylindrical; segments broad; stamens inserted in a pilose ring at 
the sudden contraction of the tube; disk of 5 free, erect lobes, as long as the 2 ovaries; 
follicles terete, 4 in. long. 
Miiller states that the sepals have no inner basal scales. 
10. RHABDADENIA BARBATA, nob.: Echites barbata, Desv. Prodr. Pl. Ind. Occid. p. 416 ; A. DC. l c. 
p. 453: Urechites barbata, Müll. Linn. xxx. 447: Echites (Urechites) barbata, Griseb. Fl. Br. W. 
Ind. p. 416. In Antillis: non vidi. 
A species seen alone by Desvaux, and known to us only by his imperfect description. 
De Candolle did not see it; and the determinations of Müller and Grisebach are mere 
guesses, founded on a chance observation in the * Prodromus.’ From Desvaux's account 
the characters of the inflorescence and the form of the corolla are certainly more in 
accord with those of Rhabdadenia than of Urechites. Itis an erect shrub, with pubes- 
cent branches; the leaves are obovate, submucronate, glabrous, with distant oblique 
nerves; panicle on a long peduncle supporting few flowers; sepals subulate, pilose ; 
tube of corolla barbately pilose, narrow below for the length of the calyx, thence swelling 
upwards. 
11. RHABDADENIA ? LUCIDA, nob.: Echites lucida, R. € Sch. Syst. iv. 796; A. DC. l. c. p. 475: Odonta- 
denia lucida, Müll. l. c. p. 120 in adnot, et in Linn. xxx. p. 453. In Orinoco: non vidi. 
Apparently a scandent plant from Willdenow's herbarium ; leaves elliptic-oblong, sub- 
cordate at the base, obtuse at the summit, lucid above; inflorescence a solitary flower, on 
an elongated pedicel, as in the Echites madida, Vell. Icon. iii. tab. 42, and as sometimes 
occurs in R. Pohlii. 
Species excluded :— 
R. Sagrei, Müll. Linn. xxx. 435, 447; Echites 
Sagrei, A. DC. 1. 6. P: 456. . . . . . .— Angadenia Sagrei. 
R2 
