38 ON SOUTH-AMERICAN APOCYNACEX. 
what more than half that size; the peduncle of the inflorescence is 2-24 in. long, its 
superior branches 14 line long; pedicels of the same length; sepals 13 line long; tube 
of corolla 5 lines long, segments 3 lines long; follicles 15 lines long, 5 lines broad, on a 
thickened pedicel 5 lines long. 
10. PESCHIERA STENOLOBA, nob.: Tabernemontana stenoloba, Müll. in Linn. xxx. 407. In Peruvia, circa 
Cuchero, Yurimanguas et circa Guayaquil (non vidi). 
A species near P. heterophylla, with slender branches, with opposite leaves in unequal 
pairs, ovate elliptic, acuminated, submembranaceous, 4 and 6 in. long, 2 in. broad, on 
petioles 3-33 lines long; cymes sublateral in the dichotomy of the branches, 6—8-flowered ; 
peduncle 2 lines long, densely covered with imbricated ovate bracts 1 line long; sepals 
lanceolate, with an internal 4-5-dentate scale at the base; corolla in bud 1 in. long, 
with a slender tube broader at the base, densely pilose within, segments oblong obovate ; 
stamens inserted a little above the base of the tube; 2 free acutely obovate ovaries, 
without a disk; style short; 2 obovate follicles, echinated. 
11. PESCHIERA TENUIFLORA, Popp. Gen. iii. p. 70, tab. 280: Tabernemontana tenuiflora, Müll. l. c. p. 76. 
In alta Amazonas ad Rio Japuré, circa Coary (non vidi). 
A species with much the habit of P. heterophylia. It is a shrub 5-6 feet high, much 
branched, its branches pallidly fuscous, slender, terete, compressed at the nodes, divari- 
cately dichotomous ; leaves heterophyllous, spreading, the larger one elliptic, acute, and 
almost obsoletely petiolated at the base, 53 in. long, 24 in. broad, the opposite one ovate 
or roundish, sessile and subcordate at the base, 24 in. long, 14 in. broad, glabrous, con- 
colorous; peduncle very slender, erect in the dichotomy of the branchlets, 1-13 in. long, 
bearing near its apex 4 approximated flowers, on pedicels 8 lines long, the lower ones 
caducous; sepals lanceolate, 1 line long; tube of corolla very slender, 7 lines long, 
slightly swollen near the base, subpilose within, segments 3 lines long, 1 line broad; 
stamens inserted near the base of the tube, anthers slender, sagittate, subcoherent ; 
ovaries 2, slightly tuberculated; no apparent disk; follicles 2, divaricated, one often 
abortive, obovate, or obtusely elliptic, subcompressed, verrucously muricated, orange- 
coloured, 13 in. long, 13 in. broad. 
12. PESCHIERA HETEROPHYLLA, nob.: Tabernemontana heterophylla, Vahl, Ecl. ii. p. 22, Icon. tab. 14 
(non A. DC. nec Bth.); Müll. /. c. p. 76 (in parte). In Guiana et Amazonas: v. s. in hb. Mus. 
Brit. (pl. typica) Cayenne (Van Rohr), Guiana (Sagot 390); in hb. meo (n. 17796), San Gabriel, 
Rio Negro (Spruce 2106). 
A. species often confounded with the following. Its branchlets are slender at the ex- 
tremity, dichotomous, terete, and slightly 4-angular, swollen at the axils; lower down, 
where the leaves have fallen off, they are marked by annular ridges at the nodes. The 
opposite leaves are unequal in size at each axil, are thinly chartaceous, oval, obtuse, 
or shortly acute at the base and subinzquilateral, suddenly attenuated at the summit 
into a sublanceolate acumen; they have about 10 pairs of patently divaricated slender 
nerves ; at each node they are respectively 43-3 in. long, 24-14 in. broad, on channelled 
petioles 2-3 lines long, their margins conjoined across the node by an elevated ridge; the 
