Calystegia.] COXVOLVULACEJE. 105 



oblong, the two inner rather smaller. Corolla funnel-shaped or 

 campanulate, glabrous; limb plioate, subentire. Stamens included. 

 Ovary 1- or imperfectly 2-celled, 4-ovuled ; style entire, filiform, 

 stigma of 2 oblong lobes. Capsule ovoid or sub-globose, 1-celled, 

 4-valved and usually 4-seedod. Seeds black, glabrous or verrucose. — 

 Species 8, in temperate and sub-tropical regions, two in Britain. 



C. hederacea, Wall 1329; F. B. I. iv, 217; Train Beng. PI 737.1 



"A prostrate or climbing perennial herb. Leaves 1-3 in. long, somewhat 

 irregular in shape, entire or lobed, cordate or sagittate, petioles about 

 1 in. long. Floirers pinkish-purple, peduncled, bracts ovate. Sepals 5, 

 glabrous, £ in. long. Corolla subcampanulate, tube 1 in. long. Capsule 

 \ in. long, ovoid, subacute, glabrous. Seeds glabrous. 

 Prostrate as a weed of cultivation, or climbing on hedges and bushes. 

 Disteib. Westwards to the Punjab and Afghanistan, and eastwards 

 to N. and E. Bengal and Penang; extending to China, Japan and 

 Amurland. 



7 . CONVOLVULUS, Linn. ; PI. Brit. Ind. iv, 217. 



Herbs or undershrubs, erect prostrate or twining, sometimes spinous. 

 Leaves entire toothed or lobed. Flowers axillary, solitary or in few- 

 flowered cymes, bracts usually narrow. Sepals usually subequal. 

 Corolla campanulate or funnel-shaped, limb plicate or nearly entire. 

 Stamens included, filaments usually unequal. Ovary 2-celled, 

 4-ovuled, style filiform ; stigmes 2, linear or oblong, distinct. Fruit 

 a 2-celled capsule, 4-valved or bursting irregularly. Seeds normally 

 4, smooth or minntel.v tuberculate. — Species about 150, chiefly in 

 temperate or sub-tropical regions. 



Branches prostrate or suberect, not twining, 



flowers sessile or nearly so, corolla \-\ in. 



long . . .... l.C. pluricaulis. 



Stems trailing or twining, peduncles 1-2 in. long, 



corolla f-1 in. long 2. C. arvensis. 



1, C. pluricaulis, Chois. Convol. Or. 25 ; F. B. I. iv, 213; Watt E. D.; 

 Praia Beng. PI. 728. 



A diffuse hairy perennial herb with a woody rootstock ; branches slender, 

 terete, prostrate or suberect, sparsely fulvous-pilose. Leaves shortly 

 petioled, linear-oblanceolate, up to 1J in. long ; the upper ones smaller, 

 linear-oblong, hairy on both sides. Flowers solitary or in pairs, sessile 

 or nearly so in the leaf-axils, bracts linear. Calyx thinly hairy ; sepals 

 subequal, lanceolate to ovate, tips acuminate. Corolla pale-rose, shortly 

 funnel-shaped, $-£ in. long. Capsule globose, less than £ in. in diam. 

 Seeds brown, minutely puberulous. 



