A AA AA. AFA AA AA RUN —áÁ 
ON SOUTH-AMERICAN APOCYNACEX. 231 
slender funiform branches are glabrous; leaves linear, very narrow, mucronate, on very 
short petioles; peduncles axillary, filiform, shorter than the leaves, with 2 floriferous 
branches, each bearing several small white flowers. 
6. MESECHITES ANGUSTATA, nob. : Echites angustifolia, Benth. (non Poir.), Hook. Journ. Bot. iii. p. 247. 
In Guiana Brit.: v. s. in herb. Mus. Brit. prope cataractam Kaietur (Appun). 
This species was found by Schomburgk in the sandstone region near Mount Roraima, 
and afterwards by Appun at the great fall of Kaietur on a tributary river of the lower 
Essequibo. It is a shrubby plant, with thickish branches and slender subflexuose branch- 
lets, with axils 2-1 in. apart; leaves opposite or ternate, patent, lanceolate-oblong, 
obtusely narrowed toward the base, obtuse and mucronulate at the apex, subcoriaceous, 
with very revolute margins, subnitid above, deeply suleate along the midrib, with many 
very patent immersed nerves, opake and yellowish beneath, with a very prominent 
reddish midrib, and semi-immersed nerves, 1-14 in. long, 12-24 lines broad, on chan- 
nelled petioles 1 line long; raceme with a flexuose rachis, bearing smallish flowers, on 
short thick pedicels; sepals acutely oblong, 3 line long ; corolla scarlet, salver-shaped ; 
tube 1 in. long, narrower below the middle, somewhat broader above; segments more 
orange-coloured, obliquely ovate, 3 lines long, 2 lines broad; stamens inserted in the 
contraction of the tube upon a pilose ring; filaments slender; anthers obtusely bilobed 
at the base; disk of 5 free oblong lobes as long as the ovaries; follicles 2, slender, 
terete, areuate, conjoined at the apex. 
7. Mrsremtres suscarnosa, nob. : Echites subcarnosa, Benth. Hook. Journ. Bot. iii. p. 247 : Mandevilla 
subcarnosa, Benth. & Hook. Gen. ii. p.727. In Guiana Brit. circa Roraima (Schomburgk) : v. s. in 
herb. Mus. Brit. prope cataractam Kaietur (Appun). 
A glabrous shrubby species, near the preceding, with a stoutish subfleshy stem and 
slender scandent fuscous branchlets; these are thickened across the approximate axils, 
which are 14 line apart ; leaves opposite, lanceolate-elliptic, somewhat attenuated towards 
each extremity, with a short subobtuse acumen, margins subrevolute, chartaceous, dark 
green above, with 6 pairs of distant horizontally patent nerves conjoined near the 
margins, as in Plumeria, with immersed transversely reticulate veins, ochreously paler 
beneath, opake, with a fuscous prominulent midrib and nerves, nearly 2 in. long or 
longer, 5 lines broad, on slender channelled petioles 2 lines long; raceme with several 
subspicate flowers on short pedicels ; sepals acute, 14 line long; corolla salver-shaped, 
tube a little wider above; fructiferous peduncle 6 lines long, closely cicatrized; follicles 
2, slender, terete, subtorulose, 4—44 in. long, 1 line thick; seeds 4 lines long, linear, with 
a reddish spreading coma 6 lines long, the outer hairs somewhat shorter. 
The above details accord well with Mr. Bentham’s description. The authors of the 
“Genera Plantarum’ (ii. p. 727), however, regard this plant as belonging to Mandevilla ; 
but if we compare one with the other it will be seen that they are utterly at variance 
in almost every character, so that this view must be discarded. 
