ON SOUTH-AMERICAN APOCYNACEA. 79 
2. MERIZADENIA ARCUATA, nob.: Tabernemontana arcuata, R. & P. l. c. p. 22, tab. 143; A. DC. I. c. 
p. 363. In Peruvia: non vidi. 
A tree more than 60 feet high, with a spreading head; branchlets stoutish, dichoto- 
mous, pallid, subcompressed, with axils 1 in. apart; leaves oblong or lanceolate oblong, 
pointed at both ends, flat, patent, ¡with prominulent diverging nerves, 5-6 in. long, 
132 in. broad, on petioles 3-4 lines long, fossulate at the base, and conjoined by a 
short transverse ridge; panicles 14 in. long, branching from the base; peduncles slender, 
4 lines long, branched, alternately bracteolated, each bearing about 3 alternate flowers ; 
on slender pedicels 3 lines long, furnished with a small acutely ovate bracteole ; sepals 
acutely oblong, 1 line long; corolla pale yellow; tube cylindrical, 6 lines long; segments 
spathulate-oblong, 5 lines long, 3 lines broad, deflexed; stamens inserted a little below 
the base of the tube; disk of 5 small free glands; ovaries 2, free to the base, pointed ; 
follicles large, divaricated, oblong, roundish, with an obtuse, reflexed apex, 2% in. long, 
1} in. broad, containing many obovate seeds 4 lines long, dorsally costate, reddish, half- 
imbedded in scarlet fleshy funicles. 
3. MERIZADENIA AMPLITOLIA, nob.: Tabernemontana macrophylla, Poir. Dict. Suppl. v. p. 276 (non 
Müll); A. DC. Prodr. viii. 374. In Guiana: v. s. in herb. Mus. Brit. Cayenne (Martin), Guiana 
(Pollard 10, sub 7. oblongifolia), Surinam (Hostmann). 
A species near M. arcuata. Branches compressed, striolated, fistulous, with dilated 
axils 2 or more inches apart; leaves elongate-oblong, acute at the base, broadish 
above, suddenly constricted near the summit into a somewhat narrow acumen, un- 
dulate and subrevolute at the margins, thinly chartaceous, glabrous, pale green above, 
granularly rugous, suleate at the patently divaricate nerves, paler beneath, with 
prominent midrib and 12 pairs of prominent nerves, 6-9 in. long, 24-34 in. broad, on 
rather slender channelled petioles deeply fossulate at the base and conjoined across 
the nodes, 3-5 lines long; panicles axillary; peduncles thick, angular, short, alter- 
nately 3-branched, each branch bearing several approximated pedicellated flowers, 
often geminate or subumbellate, its close prominent joints having a short caducous 
bractlet; pedicels 6 lines long; sepals ovate, obtuse, submembranaceous, 2 lines long ; 
tube of corolla cylindrical, 9 lines long; segments unequally oblong, obtuse, 7 lines 
long, and quite deflexed, sinistrorsely convolute in «estivation, as in M. Sananho. 
A. drawing of this species, and an analysis of its flower, fruit, and seeds, are shown in 
Plate XI. A. 
ANARTIA *. 
The plants of this small group much resemble in appearance many of the species of 
Peschiera in having unequal pairs of leaves, and a depauperated inflorescence with a 
salver-shaped corolla; but they differ notably in the longer and more linear form of its 
segments, inflected downwards, as in Bonafousia, and convolute dextrorsely (not sinis- 
* From ávdprios (imperfectus), because of its unequal leaves and impoverished inflorescence. 
