ON SOUTH-AMEEICAN APOCYNACE^. 193 



pale yellow flowers, on pedicels 6 lines long; sepals acute, 1-1^ line long; tube of 

 corolla narrowly cylindrical towards tlie base and near tbe summit, where it is spirally 

 twisted, yentricose in the middle, 15 Hnes long, subpilose within ; segments obovately 

 dolabriform, crispate on the margins, 7 lines long and broad, with dextrorse convo- 

 lution; stamens inserted on a pilose ring on the lower constriction of the tube; disk of 

 5 oblong fleshy lobes, half the length of the 2 oyate glabrous ovaries ; follicles 2, terete, 

 horizontally divaricate, outwardly subarcuate, 8 in. long, 3 lines thick towards the base, 

 obtuse, and 2 lines thick towards the apex ; seeds many, oblong, dorsaUy costate, thinly 

 rostrate at the summit, with a longitudinal raphe, from the apex of which they are 

 suspended, 4 lines long, with an apical, spreading, softly sericeous yellowish coma 10 

 lines long. 



2. EcHiTES UMBELLATA, Jacquin (non H. B. K.), Amer. p. 30, tab. 22 ; Linn. Sp. PI. (in parte) 307, Syst. 



iii. p. 331 ; A. DC. Prodr. viii. p. 447 j Griseb. PI. Br. W. Ind. p. 414 ; Lunan, Jam. ii. p. 145 : 

 Tabermemontana suhcordata^ Linn. Syst. p. 945 : Periploca {Nerium) oblongo-cordata, Plum. Amer. 

 ii. p. 21 0, tab. 216. fig. 2. In Antillis : non vidi. 



This marked species is well depicted by Jacquin and Plumier, and is very different 

 from the plant described by Kunth. In Jamaica it grows in the moist parts of the 

 savanna. It is a twining plant, climbing to a height of 15 feet, exuding a clear, glu- 

 tinous and poisonous juice ; its branchlets are slender, glabrous, with axils 4 in. apart ; 

 leaves oblong, deeply cordate at the base, subacute at the summit, dark green above, with 

 about 14 pairs of patently divaricate nerves arcuately conjoined near the undulate 

 margin, pale ferruginous beneath, with prominulent nerves and reticulated veins, 85-4 

 in. long, 1^2 in. broad, on petioles 5 lines long ; inflorescence lateral, on a peduncle 

 If in. long, supporting 4-7 flowers on umbellate pedicels 6 lines long, pluribracteolate 

 at their base ; sepals acute or acuminate, 1^ line long, each with 2 acute inner scales ; 

 tube of corolla 12-15 lines long, narrowly cylindrical at the base and summit for a length 

 of 5 lines, there spirally twisted, longitudinally 5-nerved, of a greenish colour ; segments 

 white, deltoidly dolabriform, with orenulate margins, 7 lines long and broad, dextrorsely 

 convolute ; stamens on very short filaments, seated on the lower constriction of the tube ; 

 disk of 5 fleshy oblong lobes, shorter than the 2 conical ovaries ; follicles 2, terete, ob- 

 long, horizontally divaricate, obtuse, 8 iu, long, 4 lines thick, containing many oblong 

 seeds thinly rostrate at the apex, 6 lines long, surmounted by an erect apical coma 

 9 lines long, 



3. EcHiTES OBLIQUA, nob. : Echites umbellata, H. B. K. (non Jacq.) Gen. iii. p. 212 (excl. syn.) : Apo- 



cynum obliquum, Miller, Diet. No. 8. In AntiUis, Cuba (Bonpland) : v. s. in herb. Mus. Brit. Jamaica 

 (Houston) . 



A climbing species with terete branches, having its axils 1^ in, apart ; opposite leaves 

 suborbicular, roundish at the base, retuse, with a very short acute acumen at the sum- 

 mit, rigidly membranaceous, darkish green above, with many parallel, oblique, divergent 

 nerves and reticulated veins, beneath opake, paler, pruinose, with prominent nerves, 

 2-2|- in, long, 1^-2 in. broad, on petioles 4-6 lines long ; raceme lateral at the nodes, on 

 an erect peduncle |-1 in. long, supporting 4-5 flowers on subumbellate pedicels 6 lines 



2c 



