Ipomcea.~\ ci. CONVOLVULACEJE. (C. B. Clarke.) 197 



or funnel-shaped, tube long or short ; limb 5-plaited, margin very shortly lobed. 

 Stamens unequal, included or exserted ; filaments filiform or dilated at base, 

 often hairy, not with processes subconnivent over the ovary ; anthers oblong! 

 ultimately twisted or straight. Ovary 2-celled, 4-ovuled, rarely 4-celled and 

 4-ovuled (subgenus Quamodit), or 3-celled and 6-ovuled (subgenus Pharbitis) ; 

 disc annular; style filiform, stigma entire or 2-globose. Capsule globose or 

 ovoid, 4-3- (rarely sub- 2-) valved. Seeds as many as the ovules, or fewer. 

 Species 300, in the warmer regions of both hemispheres. 



SUBGENUS I. Calonyction, Chois. in DC. Prodr. ix. 345 (genus). 

 Corolla-tube elongate, 2-6 in., many-times longer than the sepals. Stamens 

 about as long as the corolla-tube. Ovary 2-celled. 



1. Z. bona-nox, Linn. Sp..PL 228, as to the American plant only, not of 

 Gaertn. ; stem smooth or muricate, leaves cordate ovate acute glabrous entire 

 or angular or lobed, peduncles long 1-5-flowered, flowering sepals ovate mucro- 

 nate or shortly acute rarely obtuse, corolla white tube linear, capsule 1 in. 

 ovoid-oblong, seeds glabrous. Cav. Ic. iii. 52, t. 300; Bot. Mag. t. 752 ; Jacq. 

 Hort. Schoenb. i. 13, t. 36 ; Benth. in Hook. Fl. Nigrit. 465 ; Meissn. in Mart. 

 Brasil. vii. 215. Calonyction speciosum, Chois. Convolv. Or. 59, t. 1, fig. 4, and 

 in DC. Prodr. ix. 345, as to the American plant and synonyms only. 



Cultivated throughout INDIA, native of tropical America. 



VAR. grandiflora ; leaves cordate ovate acute not lobed. I. grandiflora, Eoxb. 

 Hort. Seng. 14, and Fl. 2nd. i. 497, and ed. Carey $ Wall. ii. 87. I. noctiluca, Herb. 

 in Bot. Reg. note to t. 917. I. bona-nox, Slume Bijd. 712 ; Kurz For. Fl. ii. 217, not 

 of Linn, even in part. I. aculeata, Blume Bijd. 715, fide Hassk. I. Roxburghii, 

 Steud. Nomencl. not of Sweet. I. noctiflora, Griff". Notul. iv. 286. Convolvulus 

 grandiflorus, Wall. Cat. 1370. Quamoclit longifiora, G. Don Gen. Syst. iv. 259. 

 Calonyction speciosum, Chois. Convolv. Or. 59, and in DC. Prodr. ix. 345, var. a and 

 (but most of the Indian synonyms quoted belong to C. asperum, Chois.} ; Wight Ic. t. 

 1361 ; Dalz. $ Gibs. Bomb. Fl. 164 ; Hassk. PL Jav. Ear. 522. C. Roxburghii, G. 

 Don Gen. Syst. iv. 263, wholly or in part. 



TROPICAL INDIA, in most climates common ; from Assam and Bengal to Tenas- 

 serim, and Malabar. DISTRIB. E. Asia, Tropical Africa. 



Extensively scandent ; stems smooth, or not rarely muricate. Leaves 3-8 in., 

 glabrate, secondary nervation much less prominent than in /. glaberrima ; petiole 3-6 

 in. Peduncles 2-6 in. ; bracts caducous. Sepals ^ in., usually ovate, obtuse, mucro- 

 nate, in fruit unaltered or slightly enlarged. Corolla-tube 3 by in., limb 3-5 in. 

 diam., pure white or with plaits greenish, never with at all purple. Anthers shortly 

 exserted or subincluded. Capsule narrowed upwards ; peduncle at length somewhat 

 thickened. Moon-flower of the English ; the flower expands at night, closes to 

 wither about one hour after sunrise ; see Sir W. Jones in Asiat. Research, iv. 257. 

 It does not appear that Linnaeus ever saw /. grandiflora, Roxb., which is perhaps 

 specifically distinguishable from the American /. bona-nox; there are many speci- 

 mens of the typical /. bona-nox supplied from Asia; but American seeds of this 

 were grown in India in Roxburgh's day, if not before. It is consequently now 

 very difficult to decide whether /. bona-nox and /. grandiflora should be regarded as 

 distinct. 



2. X. muricata, Jacq. Hort. Schoenb. iii. 40, t. 323, not of Cav. ; stem 

 usually muricate, leaves cordate-ovate acute glabrous entire, peduncles 1-5-fld. 

 somewhat shorter than the petioles, flowering sepals elliptic-lanceolate, corolla 

 rose-purple tube linear, capsule - in. globose apiculate, seeds glabrous. Roxb. 

 Hort. Beng. 14, and Fl. 2nd. i. 499, and ed. Carey $ Wall. ii. 89 ; Benth. in 

 Hook. Fl. Nigrit. 465 ; Miq. Fl. Ind. Bat. ii. 608. I. bona-nox, ft purpurascens, 

 Bot. Reg. iv. t. 290. Convolvulus muricatup, Linn. Mant. 44; Wall. Cat. 



