ON SOUTH-AMERICAN APOCYNACER, 69 
so named by Spruce. It has terete branches, with axils about 2 in. apart; leaves elliptic, 
subacute at both ends, chartaceous, margins revolute, opake green above, sulcate along 
the midrib, with more than 50 pairs of prominulent patent parallel nerves arcuately 
conjoined within the margin, and fine intermediate reticulated veins, ferruginously 
opake beneath, sulcate along the immersed nerves, 4-6 in. long, 14-2 in. broad, on 
channelled petioles 4-5 lines long, deeply fossate at the base, with a hooded margin, 
angular beneath, and conjoined across the nodes by a transverse ridge; panicle terminal, 
3 in. long, on a bare peduncle 9 lines long, with several short branches, each supporting 
3 flowers 14 in. long, on bracteolated pedicels 3 lines long; sepals acute, 1 line long, 
each with numerous lanceolate minute inner scales; tube of corolla narrower in the 
throat, 8 lines long, gradually broader towards the base, 8 lines long, densely pilose for 
3 its length from the mouth; segments obtusely oblong, 4 lines long, simply sinistrorsely 
twisted in an obtusely pyramidal form in «estivation; stamens included, inserted at the 
foot of the pilose ring; anthers acuminate, with 2 obtuse short. basal prongs; disk annular, 
5-grooved, half the length of the 2 oblong ovaries; rest as in the generic character. 
3. RHIGOSPIRA PAUCIFOLIA, nob. : Tabernemontana paucifolia, Spruce; Müll. L. c. p. 87. In Amazonas: 
v. s. in herb. meo Panuré, Rio Uahupes (Spruce 2564). 
This much resembles the typical species in habit and inflorescence. Its rugous 
branches are stout and fistulose; its leaves, fuscous and of a reddish hue, are obovate, 
subacute at the base, obtusely pointed at the apex, flaccidly chartaceous, with parallel 
divergent nerves terminating in the sinuosities of the margin, ferruginously reddish and 
opake beneath, with prominent fuscous midrib, nerves, and transverse very reticulate 
veins, 33-64 in. long, 3-4 in. broad, upon stoutish petioles 5-9 lines long, which are angu- 
lar beneath, deeply fossate at the base, the hollow being margined by an elevated hooded 
rim, and are connected across the node by a transverse ridge; panicles terminal in the 
younger branchlets, 23 in. long, on a bare peduncle 14 in. long, with an almost capitate 
head of several flowers, on close spreading branches bare at the base, each bearing 6 or 7 
flowers on pedicels 14 line long, supported by short acute bracteoles; sepals ovate, 1 line 
long, ciliolated on the margins, with several inner basal scales; tube of corolla 3 lines 
long; the segments oblong, 6 lines long, erect, and simply contorted sinistrorsely in æsti- 
vation; stamens inserted above the base of the tube upon pilose lines; disk cylindrical, 
thickish, 5-grooved, hirsutulous, very little shorter than 2 free ovaries. 
4. RHIGOSPIRA RETICULATA, nob.: Tabernemontana reticulata, A. DC. l. c. p. 366; Müll. l. c. p. 87, 
tab. 27. fig. 2. In Bahia (Blanchet 2336 ; Riedel 445) : non vidi. 
A species with stout, rigid, subcinereous branches, 4-angular at the apex, branchlets 
glabrous; leaves patent, obovate, subacute at the base, rounded or obtuse, and mucronu- 
late at the summit, with conspicuous nerves and reticulated veins, 3-53 in. long, 
2-38 in. broad, on petioles 43-6 lines long, broad and fossate at the base; panicle 
terminal, on a peduncle 14 in. long, verruculous, with several short subumbellate 
branches 23-33 lines long, each bearing several close flowers 2-1 in. long, on pedicels 
4 lines long; sepals obtuse, 13 line long, ciliolated, with very numerous lanceolate 
