lpomcea .] 
COKVOLYULACEiE. 
207 
* I. tuber osa, Linn.; ChoisyinDC. Prod. ix. 362, (Bot. Reg. t. 7G8. 
Batatas tuberosa, Bojer, Sort. Maur , 226), spread round the world in 
the tropics, is naturalised in Mauritius in ravines near Moka and 
Chateau d’Eau, and was found by Dr. Balfour in Rodriguez. It is a 
glabrous perennial, with robust stems, climbing to the top of high 
trees, long-petioled large leaves with 7 palmate oblong acute leaflets, 
flowers 3-6 on a long peduncle, sepals above an inch long obtuse 
much imbricated, corolla twice as long as the calyx bright yellow, 
and a globose capsule above an inch long, with 2-4 seeds clothed with 
black tomentum. Liane de Gondelour. 
1. I. cairica, Sweet , Hort. Brit. 287. A slender perennial climber, 
glabrous in all its parts, the branches often tubercled. Leaves 1-3 
in. broad and long, deeply cordate, membranous, cut down nearly or 
quite to the base into 5-7 oblong acute lobes ; petiole 1-3 in. long, 
sometimes furnished at the base with a persistent laciniated stipule. 
Flowers 3-6, corymbose on a long or short peduncle. Sepals obtuse, 
imbricated, % in. long. Corolla 1J-2 in. long and broad, reddish or 
white. Capsule globose, in. thick, 2-celled, the cells 2-seeded. 
Seeds with a grey-brown villose testa. Convolvulus cairicus, Linn. ; 
Bot. Mag. tab. 699. I. tuberculata, B. and S. ; Bojer, Sort. Maur. 
228. I. stipulata, Jacg . Hort. ScJioen. tab. 199. Batatas venosa, Bojer , 
Hort. Maur. 226. I. palmata, Forst. ; Choisy in DC. Brod. ix. 387. 
Mauritius, Rodriguez and Seychelles, frequent in bushy places. Round the 
world in the tropics. I. venosa is a variety with the leaflets quite distinct, and 
I. tuberculata with the steins tubercled. Liane de sept ans. 
2. I. Horneij Baker. A robust glabrous creeper, with stems and 
peduncles tubercled with raised points. Leaves digitately compound, 
membranous, glabrous, dark green ; leaflets 3-7, usually 5, oblong, 
acute, lf-2 in. long, deltoid at the base, on petiolules i in. long ; 
petiole slender, 1^-2 in. long. Peduncles stout, straight, 4-6 in. long ; 
flowers 12-20, in a crowded corymb, on short pedicels. Sepals i in. 
long, broad, obtuse, much imbricated. Corolla 1^-2 in. long, white, 
broadly funnel-shaped. Capsule small, 2-celled, with a single seed in 
each cell. 
Seychelles, in Mahe on the top of the hills that separate Anse la Mouche from 
Anse la Pin, Horne , 530 ! Endemic. 
3. I. sinuata, Orteg.; Choisy in DC. Brod. ix. 362. A perennial 
climber, with slender stems and petioles densely clothed with fine 
spreading brown hairs. Leaves 4-6 in. broad, membranous, cut down 
nearly to the centre into 5-7 oblong acute deeply pinnatifid lobes ; 
petiole 2-3 in. long. Peduncles as long as the petioles, 1-3-flowered. 
Flower-sepals |-f in. long, glabrous, obtuse, with a minute cusp, much 
imbricated. Corolla more than twice as long as the calyx, white, with 
a reddish throat. Capsule globose, glabrous, an inch thick, shorter 
than the sepals. Convolvulus dissectus, Linn. ; Jacy. Hort. Find. t. 159. 
Seychelles ; roadsides in Mahe near Port Victoria, Horne , 531 ! Cosmopolitan 
in the tropics. 
