250 HYDROLEACEZ. 
lanceolate, nearly sessile, glabrous; peduncles 1-3-flowered ; 
sepals acute, quite glabrous. ©. Native of China, about 
Canton, in humid places. Flowers blue. Very nearly allied to 
the preceding; but the leaves are longer and broader, and the 
peduncles axillary, 1-3-flowered, twin and tern, 1-flowered. 
Capsule wrinkled, ovate. 
Unarmed Hydrolea. Pl. 1 foot. 
3 H. corymposa (Ell. carol. 1. p. 336.) branched; leaves 
ovate-lanceolate, sessile, smoothish; flowers terminal, corym- 
bosely approximate ; sepals acute, lanceolate, hispid; corolla 3 
times higher than the calyx. X. F. Native of Carolina, in 
sterile, stagnate places, at St. Stephens; and of Georgia, in like 
situations. Branchlets hairy. Leaves rather downy on the 
veins and edges, reflexed. Corolla azure blue, veined with 
yellow, marked by 5 white spots at the base, much longer than 
the calyx. Capsule globose, glabrous. 
Corymbose-flowered Hydrolea. PI. 2 feet. 
§ 2. Spiny shrubs. 
4 H. quapriva'tvis (Walt. fl. carol. 1. p. 109—110.) leaves 
lanceolate, very acute, attenuated at both ends; flowers 1-5 
together, axillary, almost sessile; sepals ovate-lanceolate; cap- 
sule glabrous. X. F. Native of South Carolina, in stagnate 
places. Hydrolea Caroliniàna, Michx. fl. bor. amer. 1. p. 177. 
Stem somewhat compressed, hispid from long, rarely spreading, 
white hairs. Leaves 1-3 inches long, quite glabrous, or hardly 
hispid on the middle nerves. Spines straight, axillary, acutish. 
Peduncles and sepals hispid. Corolla blue, a little longer than 
the calyx. 
Var. B; unarmed; flowers commonly trigynous. 
Native of Guiana, on the banks of rivulets. 
Aubl. guian. 1. p. 285. t. 111. Reichélia palüstris, Schreb. gen. 
no. 512, Willd. spec. 1. p. 1502. Stem glabrous, or hardly 
downy. Leaves 3-4 inches long, glabrous, rough from dots. 
Flowers axillary, 5-6 together. 
Four-valved capsuled Hydrolea. 
Pl. 1 to 2 feet. 
5 H. ova'rA (Nutt. in amer. phil. trans. n. s. 5. p. 196. ex 
Choisy, in mem. soc. phys. gen. 6. p. 109. t. 1.) leaves ovate, 
acute at both ends, petiolulate; flowers corymbose, somewhat 
dichotomously disposed ; sepals lanceolate; capsule downy. %. 
F. Native of the Arkansas territory, on the edges of ponds. 
The whole plant downy, branching only at the time of flower- 
ing. Stem a little compressed, clothed with grey, velvety down. 
Leaves deciduous, soft, downy on the nerves beneath, 14 inch 
long, those of the radical shoots almost linear. Spines long, 
acute, terete, downy. Flowers bright blue, crowded towards 
the summits of the fastigiate branches. Sepals hairy. Corolla 
pelviform, campanulate, larger than those of H. spinósa. Styles 
2-3-filiform. Capsule 2-3-valved. 
Ovate-leaved Hydrolea. Pl. 1 to 2 feet. 
6 H. srrndsa (Lin. spec. p. 328. Aubl. guian. 1. p. 281. t. 
110.) leaves ovate-lanceolate, acute, attenuated at both ends, 
nearly sessile; flowers terminal, sub-corymbose ; sepals linear- 
lanceolate; capsule glabrous. h.S. Native of South Ame- 
rica, by the sides of rivulets. Andr. bot. rep. 566.  Hydrólea 
trígyna, Swartz, fl. ind. occ. 1. p. 558. Cav. icon. 6. p. 10. t. 
529. f. 1. Plant downy and clammy. Spines axillary, spread- 
ing, villous. Peduncles 5-6-flowered, villous. Sepals joined at 
the base, villous and ciliated. Corollas blue, exceeding the calyx. 
Var. D; styles 3; stamens, sepals, and lobes of corolla, 6; 
cells of capsule 3. 
Spiny Hydrolea. Fl. Ju. July. Clt. 1791. Shrub 1 to 2 feet. 
7 H. eta‘sra (Herb. mus. brit. ex Miller. Choisy, in mem. 
soc. phys. gen. 6. p. 110.) leaves lanceolate, acute, attenuated at 
both ends, nearly sessile, quite glabrous; flowers terminal, few ; 
12 
DIES 
Fl. July, Aug. Clt. 1824. 
I. HypnRorza. 
Sagónea palástris,. 
II. Hyproua. IIl. Nama. 
sepals linear-lanceolate; capsule glabrous. 5. S. Native of 
New Spain; and of Guinea, ex Schum. pl. guin. p. 161. Stems 
terete, glabrous; branches ascending. Spines axillary, stiff, hori- 
zontal, very acute, glabrous. Peduncles few, at the tops of the 
branches, 1-flowered, villous. Sepals downy. Corolla blue, a 
little longer than the calyx. Very nearly allied to H. spinosa. 
Glabrous Hydrolea. Shrub 1 to 2 feet. 
Cult. All the species of Hydrdlea are rather handsome when 
in blossom. The shrubby and perennial species grow well in a 
mixture of loam and peat; and cuttings of them will root, if 
planted in sand, with a hand-glass over them. The annual 
kinds require the treatment of other tender annuals. 
II. HYDRO'LIA (see last genus for derivation.) Pet. Th. 
gen. mad. p. 9. Choisy, in mem. soc. phys. gen. 6. p. 111. 
Lin. syst. — Pentándria, Digynia. Calyx 5-cleft. Corolla 
rotate. Stamens inserted in the lobes of the corolla. Styles 2, 
arched. Capsule 2-celled, dehiscing at top; receptacle fleshy. 
—A marsh herb. Segments of the calyx dilated at the base. 
Corolla with a short, ventricose tube. Filaments short; anthers 
sagittate. Ovarium simple ; valves 2, bent in a little, conniving 
with the receptacle. Seeds minute, nestling, sulcate. Pet. Th. 1. c. 
1 H. Mapaeascarte’nsis (Choisy, in mem. soc. phys. gen. 6. 
p. 111.) stems simple, terete, naked at the base; flowers axillary, 
pedunculate, twin or solitary. 2%. S. Native of Madagascar, 
in marshes. 
Madagascar Hydrolia. Pl. 1 foot. 
Cult. For culture and propagation see Hydrilea. 
II. NA'MA (from vapa, nama, a stream or spring of water ; 
habitat of plants.) Lin. gen. no. 317. Schreb. gen. no. 444. 
Gaertn. fruct. t. 44., Juss. gen. p. 134.—Nama and Hydrólea 
species, Willd, and Ruiz et Pav. 
Lin. syst. — Pentándria, Digynia. Calyx permanent, of 5 
sepals. Corolla tubularly funnel-shaped. Stamens sub-inclosed. 
Styles 2; stigmas bluntish. Capsule 2-celled, loculicidal-2- 
valved. Dissepiment placentiferous in the middle; placentas 
4, laminiform, at first combined by pairs, afterwards free. 
1 N. uxpuraA'rA (H. B. et Kunth, nov. gen. amer. 3. p. 130. 
Choisy, in mem. acad. phys. 6. p. 112. t. 2. f. 1.) herbaceous ; 
leaves lanceolate-linear, sessile, with undulately curled edges; 
flowers terminal or axillary, 3-5 in a fascicle, on short pedicels ; 
corolla hardly exceeding the calyx. 21. S. Native among rub- 
bish, near Mexico, Laredo, Matamoros, &c. Hydrólea congésta, 
Willd. mss. in Roem. et Schultes, syst. 6. p. 192.  Hydrólea 
rupícola, Moc. et Sesse, fl. mex. ined. Hyd. radians, Moc. et 
Sesse, fl. mex. ined. with a figure. Stem multifid at the base, 
ascending, clothed with cinereous down. Leaves obtuse, some- 
times obovate-lanceolate, downy. Sepals downy. Corolla vio- 
laceous, glabrous inside, downy outside. 
Var. B, macrántha (Choisy, in mem. soc. phys. gen. 6. p. 112.) 
leaves obovate-lanceolate, sessile, with sub-undulated edges ; 
flowers axillary or terminal, 3-5 together, on long pedicels ; co- 
rolla twice longer than the calyx. 
Undulated-leaved Nama. Pl. 1 foot. 
2 N. JawarcE'Nsis (Lin. spec. p. 327.) herbaceous; leaves 
obovate-sub-spatulate, attenuated into the petioles at the base, 
and a little decurrent ; flowers 1-3, axillary, on short pedicels ; 
corolla hardly exceeding the calyx. (2. S. Native of Jamaica, 
St. Domingo, and Mexico. Brown, jam. 185. t. 18. f. 2. 
Hydrólea decürrens, Moc. et Sesse, fl. mex. ined. Stem diffuse, 
prostrate, hairy. Leaves hairy. Pedicels hispid. Sepals hairy. 
Valves of capsule keeled. 
Jamaica Nama. Pl. prostrate. 
3 N. picuéroma (Ruiz et Pav. fl. per. 3. p. 22. t. 244. f. b.) 
herbaceous ; leaves oblong-spatulate, tapering into the petioles ; 
E 
