ON SOUTH-AMERICAN APOCYNACEX. 181 
21. ANGADENIA Sacra, nob.: Echites Sagrei, A. DC. l.c. p. 450; Griseb. Fl. Br. W. Ind. pp. 415, 416 : 
Rhabdadenia Sagrei, Müll. Linn. xxx. p. 435. In Cuba: non vidi. 
A species bearing much the appearance of Mesechites myrtifolia; it has extremely 
slender scabridulous branches, pilose towards the ends; opposite ovate-oblong leaves, 
narrowly cordate at the base, acute and mucronate at the apex, margins revolute, cori- 
aceous, glabrous, with immersed nerves, 6-9 lines long, 4-5 lines broad, on very short 
petioles; raceme terminal, shortly pedunculate, bearing at its apex 3-4 alternate 
flowers on pedicels 4—6 lines long, with subrevolute bracts 1 line long; flowers 9-10 lines 
long; sepals acutely ovate, glabrous, 13 line long; tube of corolla 3 lines long, narrower 
below the middle, swelling above; stamens inserted in the contraction of the tube ; 
anthers pilose behind; disk urceolate, with undulate margins, as long as the 2 ovaries ; 
follicles very slender, terete, 3—4 in. long. 
22. ANGADENIA VALENZUELANA, nob. : Echites Valenzuelana, Rich. Pl. Cub. ; Griseb. in Pl. Wright. Cub. 
p. 520: Rhabdadenia Wrightiana, Müll. l. c. p. 438. In Cuba, v. s. in herb. Mus. Brit. Monte : 
Verde (Wright 399). 
A species, according to Grisebach, near 4. Lindeniana; it also approaches 4. Sagrei 
in habit. A small tree, with very slender, dichotomous, compressed, dark-red cinereo- 
glabrous branches, with axils 3 lines apart; opposite lanceolate leaves, cuneately nar- 
rowed upon the petiole, roundly obtuse and emarginate at the apex, chartaceous, with 
revolute margins, glabrous, nitid, dark green above, corrugulate, sulcate along the 
midrib, opake and dealbate beneath, with immersed darkish nerves and reticulated veins 
1-13 in. long, 5-6 lines broad, on slender channelled petioles 13 line long; raceme lateral, 
nearly as long as the leaves, depauperated, with 2 flowers on slender pedicels 4% lines 
- long; flowers rose-coloured ; sepals ovate, obtuse, 2 lines long; corolla 94 lines long; tube 
contracted below the middle; segments paler, rhombic ovoid, 34 lines long ; stamens seated 
` in the contraction of the tube; anthers hispidulous behind; follicles 2, erect, terete, slightly 
arcuate, 42 in. long, 14 line thick; seeds many, pale brown, linear oblong, compressed, 
with white verrucular stripes on the back, pale (with a raphe) on the ventral side, 3 lines 
long, with a simple coma of the same length. 
This species is referred by Benth. & Hook. (Gen. ii. 725) to Mandevilla ; but this refer- 
ence cannot be maintained. 
23. Ancapenia Havanensis, nob.: Rhabdadenia Cubensis, Müll. l. c. p. 435. In Cuba, Saltadero (Lin- 
den 1716) : non vidi. 
A species near A. Cubensis, with extremely slender, fuscous, patently pubescent 
branches ; leaves linear-lanceolate, suddenly contracted and obtuse at the base, acute 
at the apex, membranaceous, dark olive-green above, subglabrous, rufescent beneath, and 
pubescent on the midrib, 1-12 in. long, 2-3 lines broad, on petioles 1 line long; raceme 
lateral, subglabrous, longer than the leaves, pedunculate, bearing above 6-8 flowers on 
alternate slender pedicels 4} lines long, with a minute acute basal bract ; sepals ovate, 
acute, 6 lines long, imbricate, with 1 or 2 subulate inner scales; corolla 1-17 in. long ; 
. tube narrow below the middle, campanulate above; segments inequilaterally oblique, 
near half the length of the tube; stamens inserted in the contraction of the tube; 
