1054 
LXXXV. CONVOLVULACEgE. 
[Aryyreia. 
tubular, funnel-shaped, rosy, woolly. Fruit Jiu. in diameter, globose, apiculate, 
brown-yellow, nearly dry. — Hook. FI. of Brit. Ind. iv. 185 ; Wight, Ic. t. 851 ; 
Lcttsomia speciosa and L. nervosa, Roxb.; Ipomcea speciosa, Blume, Bot. Mag. 2446. 
Hab.: India and Java. Met with as a stray from garden culture in Queensland. 
3. LETTSOMIA, Roxb. 
(After John Coakley Lettsom, M.D., F.S.A.) 
Sepals orbicular, elliptic, or oblong, in fruit often somewhat thickened or 
enlarged. Corolla tubular funnel-shaped ; limb plicate, lobes usually shallow. 
Stamens included or exserted ; anthers oblong or linear, never twisting. Ovary 
2-celled, 4-ovuled ; disk annular, usually prominent ; style filiform ; stigmas 2, 
subsessile, globose. Fruit indehiscent. Seeds 4 or 1. Scandent more or less 
hairy shrubs. Leaves alternate, undivided, base often rounded or cordate. 
Cymes axillary, peduncled, densely corymbose or capitate, bracteate. — C. B. 
Clarke in Hook. FI. Brit. Ind. iv. 191. 
1. L. Soutteri (after Wm, Soutter), hail. 3rd Suppl. Syn. Ql. FI. A 
climbing plant with white silvery terete or nearly terete stems. Leaves from 
obiong-lanceolate and 2Ain. long, to ovate-cordate and exceeding Gin. in length, 
and more or less acuminate, upper surface glabrous and green, under surface 
silvery white, the primary veins prominent on both sides, 7 to 9 pairs, petioles 
1 to 2Jin. long, grooved. Peduncles about as long as the petioles, bearing a 
head of few white-coloured flowers ; bracts ovate, densely clothed with long silky 
hairs. Sepals about Jin. long, ovate, glabrous on the inner surface, silky on the 
outer. Corolla about lin. long, the diameter of expanded Gower rather above 
lin., lobed more than half-way down, lobes silky-hairy except the infolded 
margins. Stamens much shorter than the lobes of the corolla, hairy at the base. 
Disk prominent. 
Hab.: Johnstone ltiver. 
This plant was received by Mr. William Soutter, the late manager of the Queensland 
Acclimatisation Society, in 1886, attached to the stem of a fern-tree from the Johnstone. I 
place it in the above genus from the ovary examined (only one flower seen) appearing rather 2 
than 4-celled. 
4. IPOMCEA, Linn. 
(From ipo, bindweed, omoios, similar ; resembling the Convolvulus.) 
(Pharbitis, Batatas, Calonyction, Quamoclit, Aniseia, rind Skinneria, Clwis.) 
Corolla campanulate or with a cylindrical tube ; the limb spreading, entire, 
angular or rarely deeply lobed, folded in the bud. Ovary 2 or 3-celled, with 
2 ovules in each cell, or more or less perfectly 4-celled hy the addition of a 
spurious dissepiment between the ovules. Style filiform ; stigma capitate, entire, 
or with 2 short globular or rarely almost ovate lobes. Fruit a dry capsule. — 
Twining prostrate creeping or rarely low and erect herbs or woody climbers. 
Leaves entire lobed or divided into distinct segments or leaflets. Flowers often 
large and showy, axillary, solitary or in dichotomous cymes or rarely in irregular 
racemes. 
A large genus, dispersed over all warm climates, very few species being found without the 
tropics, either in the New or the Old World. * 
The distribution of the numerous species into distinct genera has been frequently attempted, 
but has been prarti ally unsuccessful. The separation of the species with a bypocrateriform 
corolla and exserted stamens is perhaps the most definite, but a very unnatural one, as it would 
associate 1. Bona-nox with 7. Quamoclit. Pharbitis with a 3-merous pistil, is quite as artificial, 
as it would include I. dissecta with I. hederacea and its allies, besides that the character is 
sometimes inconstant in the same species. The spurious dissepiments of Batatas are often very 
imperfect or disappear altogether. The ovary of Skinneria is not 1-locular, as had been sup- 
posed, although the dissepiment dries up as the fruit enlarges. The inequality of the sepals in 
