140 ON SOTJTH-AMEEICAN APOCTNACE^. 



sessile ; flowers axillary, solitary, on pedicels shorter tlian the leaves ; coroUa white, 

 salver-shaped, with a subtomentous tube 1 J in. long ; segments 6 lines long. 



5. Rhodocalyx hypoleucus, nob. : Echites hypoleuca, Benth. PI. Hartw. pp. 23 et 33 ; A. DC. Prodr. 



viii. 472 : Macrosiphonia hypokuca, Miill. Linn. xxx. 452. In Mexico (Hartweg 193) : non vidi. 



Dr. MiiUer regarded this species as belonging to Macrosiphonia — which opinion cannot 

 be maintained, for the reasons given in the description of the two preceding species. It 

 approaches B. maveolens. It has 2 or 3 erect puberulous stems, 6 in. high, rising from 

 a thickish root; leaves ovate-oblong, suhlanceolate, suhcordate, sparsely puberulous 

 above, covered with white tomentum below, 10-18 lines long, 4-7 lines broad, on 

 petioles 1 line long ; peduncle terminal in the sinus of the ultimate pair of leaves, and 

 shorter than they, with 1 or 2 bracts at the base of 1 or 2 flowers; bracts 3-4 lines 

 long, toraentous; pedicels as long as the peduncle, pubescent; sepals linear-lanceolate, 

 velutinous, 4-5 lines long, 1 line broad; corolla white; tube cylindrical, velutinous, 

 l^lf in. long, subventricose above the middle, and contracted in the mouth, which is 

 yellowish ; segments obovate, half as long as the tube, with reddish margins ; disk of 

 5 oblong lobes, of which 2 are subconnate at the base, half as long as the 2 ovaries. 



6. Ehodocalyx crassipes, nob. : Echites crassipes, Rich. Fl. Cub. xi. p. 91 : Walp. Ann. v. p. 494. In 



Cuba, circa Janasi (Sagra) : non vidi. 



A climbing species, with very slender, glabrous branches ; leaves oblong-lanceolate, 

 narrow, obtuse at both ends, mucronate, coriaceous, with immersed nerves, petiolate ; 

 inflorescence axillary, 1-flowered, on a short thick pedicel ; sepals oblong-lanceolate, 

 acute, glabrous; corolla 2 in. long ; tube swelHng above the middle ; segments obovate- 

 oblong, obtuse ; stamens inserted in the constriction of the tube. 



7. Rhodocalyx calycosus, nob. : Echites calycosa, Rich. PI. Cub. p. 94 ; Griseb. PI. Wright. Cub. p. 520, 



in Cat. PI. Cub. p. 194 (sub Laseguea) ; Walp. Ann. v. 495. In Cuba, Santiago (Linden 17,83) : 

 V. s. in herb. Mm. Brit. Cuba (Wright 1377). 



The specimen above-mentioned agrees with Richard's diagnosis in all essential respects. 

 That description however, by a typical error, states that the segments of the corolla are 

 1^ to 4 times longer than the tube, instead of 3 times shorter. Grisebach copies 

 this error. 



It is a subscandent shrub, with slender, twining, ferruginously hirsute branchlets, 

 having axils about 6 in. apart; leaves broadly elliptic, subacute at the base, shortly 

 acuminate, pale green and sparsely pilose above, ferruginous and hirsutulous beneath, 

 with reddish prominulent nerves and reticulated veins, 4-5' in. long, 2-2J in. broad, on 

 pubescent petioles 5-6 lines long ; racemes lateral, puberulous, 5 in. long, on a peduncle 

 bare at the base for Ij in., bearing upwards 4 or more lax flowers on slender pubescent 

 pedicels 9 lines long, each supported by a linear adpressed pilose bract 6 lines long, 

 2 lines broad ; sepals linear, acuminate, pale and submembranaceous, puberulous, ciliated, 

 7 lines long, 2 lines broad (one of them sometimes a little broader), each with an inner 

 basal broad pectinate scale ; tube of corolla narrow at the base for about half its length, 



