CONVOLVULACEJ/E. XXV. Prevosrea. 
mate, acute at both ends, petiolate, coriaceous ; racemes axil- 
lary, erect; bractea roundish, surrounding the capsule. h. S. 
Native of Penang, where it was collected by W. Jack. Young 
branches downy Leaves numerous, 3-4 inches long, downy be- 
neath. Racemes 4 or more from the same axil, 1-3 inches long. 
Racemose-flowered Neuropeltis. Shrub. 
2 N. ova'rA (Wall. cat. no. 1323. Choisy, l. c. p. 492.) 
woody; stem white, rugose, beset with white dots; leaves ob- 
long-lanceolate, with revolute edges, but not coriaceous; bractea 
ovate, surrounding the capsule, which is about the size of the 
fruit of Tilia. h. S. Native of the Burmann Empire, at 
Amherst. Leaves 3-4 inches long, glabrous on both surfaces. 
Racemes shorter than the leaves. This species is very nearly 
allied to the first; but differs, in the leaves being oblong-lan- 
ceolate, not ovate, coriaceous; in the bractea surrounding the 
fruit being ovate, not roundish, and in the capsule being larger. 
Ovate-bractead Neuropeltis. Shrub. 
Cult. For culture and propagation see Bondmia, p. 299. 
XXV, PREVO'STEA (named after M. Prevost, of Geneva.) 
Choisy, in mem. soc. phys. gen. 6. p. 492.— Calycábolos, Willd. 
—Dufoürea, H. B. et Kunth, nov. gen. amer. 3. p. 113.— 
Dethardíngia, Nees, et Mart. in nov. act. bonn. 11. p. 79.— 
Reinwárdtia, Spreng. syst. 1. p. 598. 
Lin. syst.  Pentándria, Digynia. Calyx of 5 sepals, the 2 
outer ones large, and involving the flower. Corolla funnel- 
shaped, with a plicate limb. Ovarium 2-celled; cells 2-seeded. 
Styles 2, or style one, deeply bipartite; stigmas capitate. Cap- 
sule 2-celled ; cells 1-2-seeded.—Twining shrubs, natives of 
South America. Leaves entire. Peduncles many-flowered, 
axillary and terminal, panicled. Corollas white. 
1 P. cra'sra; leaves glabrous; peduncles axillary, many- 
flowered ; outer sepals green. 5. ^. S. Native of the Mis- 
sions of the Orinoco, on the banks of the Cassiquares, near San 
Francisco Solano. Dufoürea glàbra, H. B. et Kunth, nov. gen. 
3. p. 114.  Reinwárdtia glabra, Spreng. syst. 1. p. 863. 
Shrub much branched; branches terete. Leaves obovate, ob- 
tuse, mucronate, cordate at the base, 23 inches long, full of 
pellucid dots. Corollas white. 
Glabrous Prevostea. Shrub twining. 
2 P. sericea; leaves silky beneath ; panicles terminal; outer 
sepals coloured. h.^. S. Native of New Granada, near the 
town of Mariquita, at the altitude of 400 hexapods. Dufotrea 
sericea, H. B. et Kunth, nov. gen. 3. p. 114. t. 214. Rein- 
wárdtia serícea, Spreng. l. c. Young branches clothed with 
silky down. Leaves ovate-elliptic, obtuse, mucronate, cordate 
at the base, glabrous above, but clothed with yellowish, silky 
E beneath, 3-4 inches long, and 2 broad, dotted. Corollas 
white. 
Silky Prevostea. Shrub tw. 
3 P. HETERA'NTHA ; villous; leaves cordate-ovate, acute, 
rather angular; peduncles 3-flowered, about equal in length to 
the leaves; sepals unequal, 3 outer ones larger, green. Y. ^. 
Native of Brazil. Dufoürea heterántha, Mart. in nov. act. 
bonn. 11. p. 79. Convólvulus Mártii, Spreng. syst. 1. p. 598. 
Corolla blue. Style undivided. Perhaps Ipomoe'a Weinmánni, 
cem. et Schultes, is a species of Prevóstea. 
Variable-flomered Prevostea. Shrub twining. 
Cult. For culture and propagation see Pordna, p. 298. 
XXVI. BREWERIA (named in memory of Samuel Brewer, 
who is much praised by Dillenius, in his Historia Muscorum.) 
R. Br. prod. 487. Choisy, in mem. soc. phys. gen. 6. p. 487. 
Li. syst.  Pentándria, Digjnia. Calyx of 5 equal sepals, 
Corolla funnel-shaped, or campanulate, plicate. Style one, bifid ; 
stigmas 2, capitate. Capsule 2-celled, valvate ; girded by the 
XXVI. BREWERIA. 299 
calyx, which is scarcely changed; cells 2-seeded.—Diffuse, non- 
lactescent herbs. Leaves entire. Flowers axillary, nearly 
solitary. This genus is intermediate between Zpome?'a and 
Evólvulus. It differs from Poràna chiefly in the calyx not 
being changed in the fruit-bearing state, and in habit. It differs 
also from Bonàmia, by the same reason. 
§ 1. Leaves cordate at the base. 
1 B. Roxsu’rent(Choisy, in mem. soc. phys. gen. 6. p. 493.) 
stem branched ; branches rusty ; leaves ovate-cordate, sub-acu- 
minated, rusty; peduncles hardly equal in length to the petioles, 
8-many-flowered ; sepals ovate, acuminated or ovate-roundish, 
nearly equal. h.S. Native of the East Indies, as of Silhet, 
Penang, Amherst, Tavoy, Travancore, Courtall, Shreenugur, &c. 
Convólvulus semidigynus, Roxb, in Wall. fl. ind. 2. p. 47. 
Conv. ferrugineus, Herb. madr. Leaves 2-3 inches long, and 
1i broad. Peduncles and petioles downy. Outer sepals villous. 
Corollas villous, rufescent. Capsule glabrous, crowned by a 
tuft of hairs. Seeds black, angular, glabrous. 
Roxburgh’s Breweria. Shrub diffuse. 
2 B. corpa‘ra (Blum. bijdr. p. 722.) plant tomentose ; leaves 
cordate, acuminated, villous; peduncles umbellately 3-5- 
flowered at the apex; sepals acuminated, the 2 outer ones the 
largest. Y%.S. Native of Java, about Buitenzorg. Nearly 
allied to B. pannósa. Styles unequal. 
Cordate-leaved Breweria. PI. diffuse? 
3 B. pannosa (R. Br. prod. p. 488.) tomentose ; leaves ovate, 
sub-cordate, pannosely tomentose; sepals unequal: outer ones 
ovate, somewhat acuminated ; styles unequal, combined at bot- 
tom. 2/.S. Native of New Holland, within the tropic. 
Cloth-leaved Breweria. Pl. diffuse. 
4 B. uE 1A (R. Br. l. c.) plant rather villous; leaves lanceo- 
late, obtuse at the base, and somewhat cordate ; styles unequal, 
combined at the base. 2/. S. Native of New Holland, within 
the tropic. 
Intermediate Breweria. Pl. diffuse. 
5 B. Mapacascarie'nsis (Choisy, in mem. soc. phys. gen. 6. 
p. 493.) Native of Madagascar." Nothing more is known of 
this species to us, but the name. 
Madagascar Breweria. Pl. diffuse. 
§ 2. Leaves ovate or linear, entire. 
6 B. x'LecANs (Choisy, l. c. p. 494.) stem branched, elon- 
gated ; older leaves ovate-elliptic, obtuse, emarginate: younger 
ones narrower, almost linear; peduncles 1-3-flowered, straight, 
generally exceeding the younger leaves; sepals cuneate-lanceo- 
late, very acute; corolla showy, campanulately funnel-shaped, 
Y.S. Native of the Burman Empire, at Prome. Conv. éle- 
gans, Wall. cat. no. 1392. Stems smoothish or downy. Leaves 
near 2 inches long, and hardly an inch broad, smoothish and 
green above, but clothed with rusty down, particularly on the 
veins beneath. Peduncles, pedicels, and bracteas downy. Co- 
rolla 13 inch long, downy on the tube outside. 
Elegant Breweria. Pl. diffuse. 
7 B. unea‘ris (R. Br. prod. 488.) plant villous ; leaves lan- 
ceolate-linear, complicate; styles equal, combined at the base. 
4L. S. Native of New Holland, within the tropic. 
Linear-leaved Breweria. Pl. diffuse. 
8 B. riwiFóLiA (Spreng. syst. 1. p. 614.) leaves scattered, 
linear, smoothish ; stem scabrous, simple; peduncles corym- 
bose. 2%.S. Native of Monte Video, Sello. 
Flax-leaved Breweria. PI. erect. 
9 B. EvorvuLoipzs (Choisy, l. c.) stem suffruticose, branched ; 
leaves ovate-lanceolate, sessile, small, glabrous; flowers solitary, 
axillary, on short peduncles ; corolla small. b. S. Native of 
India? Root woody, yellow, Stems quite glabrous. Leaves 
qq? 
