252 LXXXTIII. CONVOLTULACE.'E. 



and trellises. It lias large dark-blue flowers which become reddisli as 

 tliey fade. Woodr. Gard. iu Ind. ed. 5, p. 392. Pharbitis Learii, Dalz. & 

 Gibs. Suppl. p. 58. 



Tpomcea hederacea, Jacq. Collect, v. 1 (178G) p. 124. A twiner with 

 hairy stems, common in gardens and sometimes found as an escape. 

 Probably an American plant, naturalized in the Old AVorld (Clarl-e). 

 It has ovate, cordate, 3-lobed leaves and a light-blue corolla. Fl. B. I. 

 V. 4, p. 199 ; Trim. Fl. Ceyl. v. 3, p. 212; Jackson, in Index Kewen. 

 V. 1, p. 1225 ; Woodr. in Journ. Bomb. Nat. v. 12 (1898) p. 171. Con- 

 volvulus hederaceus, Linn. 8p. PI. (1753) p. 154. C. Nil, Linn. Sp, PI. 

 ed. 2 (1762) p. 219. 



Ipomo'ci BorsfalUce, Hook. Bot. Mag. (1834) t. 3315. A glabrous 

 twiner a native of the West Indies with deeply-divided palmate leaves 

 and a corolla of a deep rich rose-color. It is occasionally grown in 

 gardens but is not easy of propagation. Woodr. Gard. in Ind. ed. 5, 

 p. 392. 



Tpomcea dasysperma, Jacq. Eclog. v. 1 (1811-1816) p. 132, t. 89. A 

 glabrous twiner w ith pedately-divided leaves and sulphur-yellow flowers 

 with a purple tube, cultivated in gardens, sometimes found as an escape. 

 PI. B. I. V. 4, p. 215 ; AVoodr. in^Journ. Bomb. Nat. v. 12 (1898) p. 172. 



Tpomcea purpurea^ Potb, Bot. Abbancl. (1787) p. 27. A very showy 

 plant, probably introduced from Tropical America, often grown to 

 ornament trellises &c. Its flowers are of every shade from nearly white 

 to dark-purpJe. PI. B. I. v. 4, p. 200 ; Woodr. Gard. in Ind. ed. 5, 

 p. 393. 



Tpomcea ridjro-coerulea, Hook. Bot. Mag. (1834) t. 3297. A handsome 

 species with large blue or white flowers, a native of Mexico, often 

 cultivated in gardens. "Woodr. Gard. in Ind. ed. 5, p. 393. 



15. CALONYCTION, Choisy. 



Large herbaceous climbers ; stems usually muricate. Leaves large, 

 cordate, entire or angled. Plowers 1-5 in axillary cymes ; bracts 

 caducous. Sepals 5, herbaceous, smooth, usually aristate, subequal or the 

 outer smaller. Corolla large, glabrous, white or rose-purple, hypocrateri- 

 form ; tube long, narrow, many times longer than the sepals; limb 

 plicate. Stamens 5, exserted. Ovary 2-celled : ovules 4 ; style filiform ; 

 stigma 2-globose. Capsule 4-valved. Seeds 4, glabrous. — Distkib, 

 Tropical Asia, Africa and America; species 4. 



Corolla pure vhite ; seeds Tellow 1. C. speciostim. 



Corolla rcise-purple ; seeds blaek 2. C. muricaium. 



1. Calonyction speciosum, Choisfii, Convolv. Orient, in Mem. JSoc. 

 riiys. Gcvev. v. 6 (1834) p. 441. A large glabrous twiner climbing to a 

 great height; stems often muricate (sometimes almost prickly). Leaves 

 large, 3-7 in. long. l)roadly ovate, acuminate, entire, glabrous, thin, base 

 deeply cordate with broad rounded basal lobes ; petioles about as long 

 as tlie leaves. Peduncles 2-6 in, long, glabrous, 1-5-floMered : bracts 

 caducous ; pedicels usually short, stout. Sepals subequal in length, I in. 



