a 
APOCYNE/E. XVIII. Hemanictyon. 
amer. 3. p. 220. Leaves 4-43 inches long ; with the glands at 
the base hardly visible. Spikes almost sessile, half a foot long. 
Flowers sessile. Corolla glabrous, with a green tube and a 
yellow limb, with reflexed segments. This species differs par- 
ticularly from the rest in the flowers being disposed in terminal 
spikes, instead of interpetiolar racemes. 
Javita Exothostemon. | Fl. June. Shrub tw. 
7 E. PALUDOsUM ; leaves oblong or oblong-linear, acute at both 
ends, glabrous; flowers 2-4 together, terminal, pedunculate ; 
calycine segments oblong, acute. L.^.$. Native of Cuba, 
and other parts of America, on the sea shore. Echites paludósa, 
Vahl. eclog. 2. p. 19. t. 5. H. B. et Kunth, nov. gen. amer. 3. 
p. 221. Leaves 2 or 24 inches long, without any glands at the 
base. Corollas white, glabrous outside. 
Marsh Exothostemon. Fl. March. Shrub tw. 
Cult. For culture and propagation see Echites, p. 76. 
XVIII. HJEMADI'CTYON (from aipa, haima, blood, and 
&urvov, dictyon, a net; in reference to the veins and nerves of 
the leaves being red). Lindl. in hort. trans. 6. p. 71.  Echites 
species, Sims and Tussac. 
Lin. syst. Pentdndria, Monogynia. Corolla salver-shaped ; 
segments reflexed, equal, dilated; throat of the tube furnished 
with 5 inclosed scales. Stamens inclosed; anthers sagittate, 
cohering by their middle to the stigma, Ovaria twin. Style 
filiform ; stigma capitate. Hypogynous glands 5, alternating 
with the calycine segments.—''wining shrubs, with opposite 
leaves, and axillary racemes of flowers. 
1 H. venosum (Lindl. l. c.) leaves lanceolate, glabrous, a little 
blistered, and beautifully traversed by crimson veins; racemes 
drooping. kh.%.S. Native of St. Vincent. Echites nütans, 
Sims, bot. mag. 2473.  Echites sanguinolénta, Tussac. fl. ant. 
Flowers of a yellow green colour, pale in the center. 
Veined-leaved Heemadictyon. FI. June, Aug. 
Shrub tw. 
2 H. susere’cra; leaves rather ovate, downy beneath, mu- 
cronate ; racemes many-flowered. h. ^. S. Native of Ja- 
maica and St. Domingo.  Echites suberécta, Swartz, obs. 101. 
Jacq. amer. 32. t. 26. icon. pict. t. 33. Andr. bot. rep. 187. 
Sims, bot. mag. 1064.  Apócynum speciosíssimum, Mill. dict. 
Nérium sarmentósum, Browne, jam. 180.— Sloan. jam. p. 89. 
hist. 1. p. 206. t. 130. f. 2. Corollas large, with a cylindrical 
tube: hairy outside, yellow. Hypogynous scales concave, obtuse. 
Stems scandent, hardly twining. Calycine segments lanceolate. 
Erectish Hemadictyon. FI. Ju. Aug. Clt. 1759. Sh. cl. 
3 H. crecina‘xis; leaves elliptic, glabrous; racemes many- 
flowered: having the peduncles articulated; teeth of calyx 
acute. h. ^. S. Native of the Antilles, and St. Domingo. 
Echites circinàlis, Jacq. Swartz. prod. 52. fl. ind. occ. 1. 
p. 529. Flowers small, white, with undulated segments and 
villous throat. Calyx and corolla velvety outside. 
Circinal Hemadictyon. Shrub tw. 
Cult. For culture and propagation see Echites, p. 76. 
Clt. 1821. 
XIX. CERCOCO'MA (from xepxoc, kerkos, a tail, and KON, 
kome, a head of hair; in reference to the stipitate tuft of hairs 
at the top of the seed). Wall. cat. no. 1623. 
Lin. syst. Pentándria, Monogýnia. Calyx short, 5-toothed. 
Corolla salver-shaped ; with a terete tube and a 5-lobed spread- 
ing limb. Stamens inclosed. Follicles 2, divaricate, horizontal, 
large, 9 inches long, acuminated, 2-valved, many-seeded. Seeds 
lanceolate, tapering to the top, where it ends in a long, stipitate 
tuft of white hairs.—Branches warted. Leaves opposite, gla- 
brous, oblong, acuminated. Panicles corymbose, furnished with 
many opposite, ovate, acute small bracteas. 
XIX. Cercocoma. XX. PRESTONIA. 83 
1 C. Sincaporia‘na (Wall. cat. no. 1623.). h. S. Native of 
the East Indies. 
Singapore Cercocoma. 
Cult. 
Shrub. 
For culture and propagation see Echites, p. 76. 
XX. PRESTO'NIA (named after Charles Preston, M. D., 
a correspondent of Ray; and styled by him “ Eruditissimus vir, 
et Curiosissimus stirpium Observator.” Many of his observa- 
tions, chiefly on the more minute plants, occur in Ray's ** Me- 
thodus emendata." Blair also mentions him as an ingenious and 
expert botanist). R. Br. in mem. wern. soc. 1. p. 69. H.B. 
et Kunth, nov. gen. amer. 3. p. 221. 
Lin. syst.  Pentándria, Monogynia. Calyx 5-parted. Co- 
rolla salver-shaped ; throat crowned with an undivided annular 
tube, and 5 scales, which alternate with the segments of the 
limb. Anthers semi-exserted, sagittate, cohering by their middle 
to the stigma; with the hind lobes destitute of pollen. Ova- 
ria 2. Style 1, filiform, dilated at top; stigma turbinate: with 
a narrower point.  Hypogynous scales 5, distinct or joined. 
Follicles like those of Echites—Twining shrubs. Leaves oppo- 
site. Corymbs or racemes crowded, interpetiolar. Calyx foli- 
aceous : having the segments furnished each with a scale inside 
at the base. 
1 P. tomenrodsa (R. Br. l. c. p. 70.) tomentose; corymbs 
crowded ; hypogynous scales combined into an urceolus. 5 .^. 
S. Native of Brazil, near Rio Janeiro, where it was collected 
by Sir Joseph Banks, Flowers large, yellow. 
Tomentose Prestonia. Shrub tw. 
2 P. wórrrs (H. B. et Kunth, nov. gen. amer. 3. p. 221. 
t. 242.) leaves ovate-oblong, acute, subcordate, hairy above, 
but clothed with soft canescent down beneath ; flowers race- 
mose ; hypogynous scales free. 5 .^*. S. Native on the banks 
of the river Amazon, near Tomependa, in the province of Jaen 
de Bracamoros. Flowers large, yellow: hairy, ventricose 
at the base, and downy. 
Soft Prestonia. Fl. Aug. Shrub tw. 
8 P. crasra‘ra (H. B. et Kunth, nov. gen. amer. 3. p. 222.) 
leaves ovate-oblong, short-acuminated, cordate, glabrous; flowers 
racemose ; hypogynous scales free. h.%™. S. Native of Quito, 
near Guayaquil, on the shore of the Pacific Ocean. Corollas 
yellow, size of those of Vinca rósea. Pedicels hairy. 
Glabrous Prestonia. Fl. Feb. Shrub tw. 
4 P. nirsu‘ra; leaves oblong-oval, acuminated, villous be- 
neath; flowers racemose; hypogynous scales free. 5 .^. S. 
Native of Peru, in forests. ^ Echites hirsüta, Ruiz et Pav. fl. 
per. 2. p. 19. t. 136. Glands one or two at the base of each 
leaf. Calycine segments acute in the flowering state, but blunt 
in the fruiting state. Corollas yellow. 
Hairy Prestonia. Shrub tw. 
5 P. Peruvia'na (Spreng. syst. 1. p. 637.) leaves roundish, 
cordate, acuminated, tomentose, glanduliferous ; peduncles race- 
mose. hk. ^. S. Native of Peru, in woods. Echites glan- 
dulosa, Ruiz et Pav. fl. per. 2. p. 19. t. 135. Stems bearing 
glands at the joints, in the recesses at the base of the leaves, 
and along the petioles and stipulas. Leaves large, white be- 
neath, with red or purplish veins. Pedicels reflexed. Corollas 
large, yellow. Perhaps a species of Hemadictyon. 
Peruvian Prestonia. Shrub tw. 
6 P. quiNQvANGULA'nuis (Spreng. syst. l. p. 637.) leaves 
obovate or oblong-ovate, acuminated ; peduncles racemose, 
generally 8-flowered ; calycine segments with reflexed tops. 
h. ©. S. Native of South America, and the West Indies. 
Echites quinquangulàris, Jacq. amer. 32. t. 25. ed. pict. t. 32. 
Stems scabrous. Leaves 3 inches long. Corolla large, green, 
with a yellowish limb: and having the throat of the tube pen- 
M 2 
