Ipomcca.] 
LXXXV. CONVOLVULACE^E. 
1055 
some sp?cies of Aniseia is not greater than in several species retained in lpomcea. The spiral 
twisting of the anthers after emitting their pollen, so characteristic of some of the large-calyxed 
species is but slig t or uncertain in others. And notwithstanding gn at differences in the form 
of the corolla, in the dehiscence of the capsule, and indumentum of the seeds, no good natural 
groups founded upon any of these characters have as yet been proposed. As a whole, the genus 
Ipomoea itself can scarcely be said to be a very well marked nor a very natural one ; it is 
distinguished from Argyreia by the dry capsular fruit usually, but not always, opening in 
valves, and from Convolvulus only by the globular or orbicular stigma or stigmatic lobes. The 
series of species here proposed are too artificial, and not always sufficiently distinct, to be given 
as sections, but they are the best I have been able to frame for the determination of the 
Australian species. — Benth. 
Series I. Digitata .'. — Leaves digitately divided into deep lobes or distinct segments or 
leaflets. Flowers of the Speciosae, or rarely of the Campanulatae. 
Leaves palmatel’y or almost pedately several-lobed. Flowers large in loose 
cymes 1.2. digitata. 
Stem glabrous or slightlv hairy. Leaves ovate-cordate, acute-angular or 
more or less lobed. Flowers about 2in. diameter 2.* I. Batatas. 
Leaves divided into 5 or 7 ovate or lanceolate entire segments. Flowers 
large. Plant glabrous or hairy. 
Sepals nearly equal. Seeds pubescent or hairy. Leaf-segments usually 
confluent at the base 3. 7. palmata. 
Inner sepals nearly twice as large as the outer ones. Seeds glabrous. 
Leaf-segments quite distinct 4 . I. quinata. 
Leaves divided into 3 to 7 linear usually pinnatifid segments. 
Corolla nearly 2in. long. (Ovary 2-celled ?) 5. 1. diversifolia. 
Corolla scarcely Jin long. Ovary 3-celled 6. 1. dissecta 
Leaves palmate ; leaflets narrow-lanceolate, toothed or pinnatifid. Flowers 
white or purple, ljin. diameter 7. 7. sinuata. 
Series II. Pharbitides .— Leaves entire or 3-lobed. Ovary usually 3-celled. Sepals 
usually long and narrow. Corolla of the Speciosae. 
Calyx acuminate, above Jin. long. 
Leaves mostly 3-lobed. Flowers few on the peduncle. Calyx hairs 
usually spreading 8. 7. hederacea. 
Leaves mostly entire. Flowers usually several in a compact cyme. Hairs 
usually appressed 9. 7. congesta. 
Ca'yx scarcely acuminate, under Jin. long. Leaves mostly entire .... 10.* 7. purpurea. 
Perennial twiner. Leaves 3-lobed. Peduncles bearing a cyme of several 
large flowers and lanceolate bracts. Corolla violet-blue, with 5 purple 
rays 11. *7. Learii. 
Series III. Calycinee . — Leaves entire or lobed at the base. Ovary 2-celled. Sepals large, 
obtuse (attaining J to 1 in. after flowering). Corolla large (1J to 3 in. long). 
Glabrous or nearly so. Braeteoles small. Sepals very large. Corolla broadly 
campanulate, about 2in. long. 
Leaves large, mostly peltate 12. l. peltata. 
Leaves cordate or lanceolate-oblong. Corolla nearly 3in. broad . . . .13. I. calobra. 
Leaves cordate or hastate, acuminate. Petioles and peduncles often 
winged 14. 7. alata. 
Pubescent. Braeteoles large, membranous, deciduous. Corolla campanu- 
late, ljin. long or rather more 15. 7. Turpethvm. 
Glabrous or sparingly pubescent. Braeteoles small. Corolla about 3in. 
long, contracted into a tube at the base. Leaves acuminate. Outer 
sepals rather larger than the others 10. 1. grandiflora. 
Stems smooth or muricate. Leaves cordate-ovate, acute, entire or angular 
or lobed. Peduncles long, 1 — 5-flowered. Corolla large, white, tube long. 
Seeds glabrous 17. *I.bona-nox. 
Series IV. Speciosze . — Leaves entire toothed or lobed at the base. Ovary 2-celled or 
spuriously 4- celled . Sepals moderate or small (rarely attaining J in.) Corolla large flj to 3 in. 
long), often more or less tubular at the base, usually pink purple or white. 
Stems prostrale or creeping and rooting at the lower nodes. Maritime 
plants. Seeds woolly-hairy. 
Le tves rather thick, very obtuse or emarginate. Ovary more or less 
4-eelled. 
Leaves broad, 2 to 3in. long, the veins prominent 18. 7. Pes-capnc. 
Leaves sm ill or narrow, the veins scarcely prominent 19. 7. carnosa. 
Leaves rateer thin. Ovary 2-celled. 
Leaves acute or acuminate. Seeds woolly-hairy ... ... 20. 7. reptans. 
