POLEMONIACEZ. XIII. Cantua. 
clothed with clammy, glandular hairs. Leaves truncate at the 
base, hairy and clammy beneath. Calyx 5-cleft. Corollas 
white. 
Oak-leaved Cantua. Shrub 10 to 12 feet. 
4 C. puxirüLIA (Juss. ann. mus. 3. p. 118. t. 8.) tomentose; 
leaves cuneate-oblong, mucronulate, quite entire; corymbs few- 
flowered; peduncles tomentose; stamens longer than the co- 
rolla, which is straight. 5. S. Native of Peru, where it is 
called Cocantu by the natives. Lam. dict. 1. p. 608. ill. 1. t. 
106. f. 2. Cantua depéndens, Pers. ench. 1. p. 187. Peri- 
phrágmos depéndens, Ruiz. et Pav. fl. per. 2. p. 18. t. 133. 
Cántua tomentosa, Cav. icon. 4 p. 43. t. 364. Tops of branches, 
calyxes, and young leaves, downy. Corollas pale red. The 
showy flowers of this beautiful shrub are used in adorning tem- 
ples. Leaves and wood of this, as well as of other species, when 
bruised or chewed, affords an elegant yellow colour, and might 
therefore be useful in dyeing cloth. 
Lox-leaved Cantua. Shrub 5 to 6 feet. 
5 C. ova`ra (Cav. icon. 4. p. 43. t. 363. Juss, ann. mus. 3. 
p. 118.) glabrous; leaves obovate, mucronate, entire, rarely cut 
or toothed; peduncles solitary, 1-flowered, glabrous; stamens 
longer than the corolla, which is straight. h. S. Native of 
Peru, where it is called Cantuttica, i. e. Cantu Jos, by the na- 
tives. Corolla bluish red, or white. 
Ovate-leaved Cantua. Shrub 6 to 8 feet. 
* 6 C.? conpA'rA (Juss. ann. mus. 3. p. 119.) branches oppo- 
site, sarmentose, downy ; leaves nearly opposite, cordate, downy ; 
flowers axillary, solitary, pedicellate ; corolla tubular, much 
exceeding the calyx, which is short, 5-cleft, and downy; an- 
thers exserted; fruit unknown. | Ah. S. Native of Peru. 
Cordate-leaved Cantua. Shrub 4 to 6 feet. 
7 C.cunxirOLIA (Juss. l. c.) this is a very doubtful species of 
the genus. h.S. Native of Peru. 
Wedge-leaved Cantua. Shrub 4 to 6 feet. 
8 C.? MzcarorA'/wicA (Spreng. syst. add. p. 64.) leaves 
oblong-lanceolate, attenuated at both ends, quite glabrous, en- 
tire, shining above; panicles axillary. 5.S. Native of Brazil, 
at Rio Grande, Sello. 
Rio Grande Cantua. Shrub. 
Cult. All the species are showy, and worth cultivating. 
See Losélia, p. 248, for culture and propagation. 
Orvrr CLXIII. HYDROLEA‘CEZ (this order contains 
plants agreeing in important characters with the genus Hydrélea.) 
D. Don, in edinb. phil. journ. July 1833. Choisy. in mem. soc. 
phys. gen. 6. p. 106. Hydròleæ, R. Br. cong. p. 32.—Con- 
volvulàcez, part. Juss. gen. 
Calyx 5-cleft; segments equal, usually distinct even to the 
base, frequently spatulately dilated at top, permanent. Co- 
rolla monopetalous, usually campanulate, 5-lobed at top. Sta- 
mens inserted in the corolla, alternating with its lobes, sometimes 
inclosed, and sometimes exserted. Styles 2, exceeding the 
stamens ; stigmas thick or capitate. Ovarium 2-celled; cells 
many-seeded. Capsule 2-celled, loculicidal-2-valved ; dissepi- 
ment fixed to the middle of the valves; placentas 2 in each 
cell, fixed to the middle of the dissepiment, sometimes spongy 
and combined, sometimes laminzeform and separated. Seeds 
very numerous, sessile on the placentas. Albumen fleshy. 
Embryo straight.—Annual, herbaceous, or shrubby plants. 
Stems straight or diffuse, glabrous or downy, also very hispid, 
rarely exceeding 2 feet in height; with alternate branchlets. 
Leaves alternate, simple, entire, or usually toothed, more or less 
VOL. IV. 
L^ 
HYDROLEACEZ. I. Hypnorra. 249 
crowded, usually petiolate. Flowers corymbose or spicate, 
sometimes also disposed in the manner of Heliotrópium. í 
This order is often combined with Convolvulàcec, but is more 
closely allied to Scrophularinee and Solanee; but it differs 
from these orders, in the regular corolla, 5 stamens, and straight 
embryo. 
Synopsis of the genera. 
Calyx 5-sepalled. Corolla rotately campanu- 
Stigmas 
1 Hyprorea. 
late. Stamens inserted in the tube of the corolla. 
depressedly capitate. Capsule 2-celled ; placentas spongy, terete. 
2 Hyprouia. Calyx 5-cleft. Corolla rotate. Stamens in- 
serted in the lobes of the corolla. Capsule 2-celled, dehiscing 
at top; receptacles or placentas fleshy. 
3 Na‘ma. Calyx 5-sepalled. Corolla tubularly funnel- 
shaped. Stamens nearly inclosed. Stigmas bluntish. Capsule 
2-celed ; placentas 4, lamineeform, at first joined by twos, 
afterwards free. 
4 WicA'NDra. Calyx 5-sepalled. 
Stamens exserted. Stigmas depressedly capitate. 
celled; placentas like those of Nma. 
5 Copon. Calyx 10-12-parted. Corolla tubular; limb 10- 
12-cleft. Stamens 10-12. Stigmas simple. Capsule 2-celled, 
dehiscing at top; dissepiment double, with seminiferous edges. 
Corolla funnel-shaped. 
Capsule 2- 
I. HYDRO'LEA (from bòðwp, hydor, water; and edaa, elaia, 
an olive; in reference to the habitats of the species, and their 
oiliness.) Lin. gen. no. 318. Geertn. fruct. 1. p. 268. t. 55. 
Juss. gen. 134. Stéris, Lin. gen. edit. Reich. 342. Nama 
species, Lin. Sagónea, Aubl. guian. 1. p. 285. t. 111. Reiché- 
lia, Sehreb. gen. no. 512. 
Li. syst. — Pentándria Digynia. Calyx permanent, of 5 
sepals. Corolla rotately campanulate. Stamens inserted in the 
tube of the corolla. Styles 2; stigmas depressedly capitate. 
Capsule 2-celled; dissepiment placentiferous in the middle; 
placentas terete, spongy.—Annual or perennial plants, either 
unarmed or spiny. Flowers panicled or corymbose, axillary or 
terminal, 
$ 1. Plants unarmed. 
1 H. Zzvra'wica (Vahl, symb. 2. p. 46.) branched ; leaves 
lanceolate, attenuated at both ends, glabrous; panicles axillary, 
branched, leafy; sepals lanceolate-linear, clothed with viscid 
down at the base. ©.S. Native of the East Indies. Nama 
Zeylánica, Lin. spec. p. 327. fl. zeyl. 117. 49. t. 2. Stéris 
Javàna, Lin. mant. p. 54. syst. p. 264.  Stéris aquatica, Burm. 
ind. p. 73. t. 89. f. 3. Attalerie, Poir. suppl. 1. p. 535.— 
Plukn. alm. 22. t. 130. f. 2.—Anagállis Zeylánica, &c. Herm. 
mus. zeyl. p. 36. Burm. zeyl. 19. Tsjeru-vallel, Rheed, mal. 
10. p. 55. t. 28. Stem a little compressed, glabrous. Leaves 
1-2 inches long. Peduncles usually opposite the leaves, downy, 
viscid. Corollas blue, a little longer than the calyx. 
Var. B; leaves finely ciliated above. ©. S. Native of 
Java, about Bamtam. | Hydrólea Javánica, Blum. bijdr. p. 725. 
Var. y; stem downy at top; flowers on short peduncles. 
©. H. Native of Mexico. Stéris villosa, Pav, mss. in herb. 
Deless. 
Var. ò; plant quite glabrous; flowers on short peduncles ; 
peduncles in the forks; sepals quite glabrous. ©.S. Native 
about Rio Janiero. Evólvulus, no. 1365, Burchell, mss. 
Ceylon Hydrolea. Pl. 1 foot. ? : : 
2 H, neruis (Lour. coch. p. 172.) simple; leaves linear- 
Kk 
