250 



HYDROLEACE^E. I. HYDROLEA. II. HYDKOLIA. III. NAMA. 



'anceolate, nearly sessile, glabrous; peduncles 1-3-flowered ; 

 sepals acute, quite glabrous. O- G. 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. PI. 1 foot. 



3 H. COKYMBOSA (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. 1. 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-Qowered Hydrolea. PI. 2 feet. 



2. Spiny shrubs. 



4 H. QUADRIVA'LVIS (Walt. fl. carol. 1. p. 109110.) leaves 

 lanceolate, very acute, attenuated at both ends ; flowers 1-5 

 together, axillary, almost sessile ; sepals ovate-lanceolate ; cap- 

 sule glabrous. T(.. F. Native of South Carolina, in stagnate 

 places. Hydrolea Caroliniana, Michx. fl. bor. atner. 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. ft; unarmed; flowers commonly trigynous. %. . S. 

 Native of Guiana, on the banks of rivulets. Sagonea palustris, 

 Aubl. guian. 1. p. 285. t. 111. Reichelia palustris, 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. Fl. July, Aug. Clt. 1824. 

 PI. 1 to 2 feet. 



5 H. OVA'TA (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. 3f . 

 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, 1 J 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. spinosa. Styles 

 2-3-filiform. Capsule 2-3-valved. 



Ovate-leaved Hydrolea. PI. 1 to 2 feet. 



6 H. SPINOSA (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, fj . S. Native of South Ame- 

 rica, by the sides of rivulets. Andr. bot. rep. 566. Hydr61ea 

 trigyna, 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. ft ; 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. GLA'BRA (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 



sepals linear-lanceolate ; capsule glabrous, V} . S. Native of 

 New Spain; and of Guinea, ex Schum. pi. 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. spinbsa. 



Glabrous Hydrolea. Shrub 1 to 2 feet. 



Cult. All the species of Hydrolea 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. Pentandria, 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, MADAOASCARIE'NSIS (Choisy, in mem. soc. phys. gen. 6. 

 p. 111.) stems simple, terete, naked at the base; flowers axillary, 

 pedunculate, twin or solitary. %. S. Native of Madagascar, 

 in marshes. 



Madagascar Hydrolia. PI. 1 foot. 



Cult. For culture and propagation see Hydrolea. 



III. NA'MA (from va^a, 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 Hydrolea 

 species, Willd. and Ruiz et Pav. 



LIN. SYST. Pentandria, 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. UNDULA'TA (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. Tf.. S. Native among rub- 

 bish, near Mexico, Laredo, Matamoros, &c. Hydrolea congesta, 

 Willd. mss. in Roem. et Schultes, syst. 6. p. 192. Hydrolea 

 rupicola, 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. ft, macrdntha (Choisy, in mem. soc. phys. gen. 6. p. 1 12.) 

 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-]ea\ed Nama. PI. 1 foot. 



2 N. JAMAICE'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. Q. S. Native of Jamaica, 

 St. Domingo, and Mexico. Brown, jam. 185. t. 18. f. 2. 

 Hydrolea decurrens, Moc. et Sesse, fl. mex. ined. Stem diffuse, 

 prostrate, hairy. Leaves hairy. Pedicels hispid. Sepals hairy. 

 Valves of capsule keeled. 



Jamaica Nama. PI. prostrate. 



3 N. DICHOTOMA (Ruiz et Pav. fl. per. 3. p. 22. t. 244. f. 6.) 

 herbaceous ; leaves oblong-spatulate, tapering into the petioles ; 



