204 ConVolvulaceCE. [Ericybe. 



XC— CONVOLVULACE^. 



Herbaceous, more rarely shrubs, generally twining or 

 straggling, 1. alt. (none in Cuscuta), without stip., fl. regular, 

 bisexual, often large, bracteate, usually in axillary cymes ; 

 cal. persistent, free, segm. or distinct sep. 5, imbricate, often 

 unequal ; cor. campanulate, funnel-shaped or rotate, lobes 5, 

 often faintly marked, plaited and contorted in bud ; stam. 5, 

 inserted in cor.-tube ; ov. superior, 2-celled with 2 ovules in 

 each cell, or 4-celled with i ovule in each (i -celled va Erycibe)^ 

 style simple or bifid, stigmas 2 (i in Erycibe) ; fruit dry or 

 fleshy, indehiscent or opening by valves (rarely circularly at 

 base) ; seeds 1-4, without endosperm, cotyledons plaited (in 

 Cusaita with endosperm and no cotyledons). 



Not parasitic, with leaves. 



Fruit indel^iiscent, fleshy, or dry. 



Ov. i-celled, stigma i, sessile . . . .1. Erycibe. 

 Ov. 4-celled, stigmas oblong . , . .2. RiVEA. 

 Ov. 4-celled, stigmas globose . . . • 3- Argyreia. 

 Ov. 2-celled, stigmas globose . . . .4. LettsOiMIA. 

 Fruit dehiscent, capsular. 

 Style I, simple. 



Stigmas globose 5. Ipom/EA. 



Stigmas ovoid 6. Hewittia. 



Style I, bifid, stigmas globose . . . .9. Breweria. 

 Styles 2; simple. 



Stigmas oblong; twining herb . , .7. CONVOLVULUS. 

 Stigmas globose ; small erect shrub . . 10. Cressa. 

 Styles 2, bifid, stigmas linear . . . .8. EvoLVULUS. 

 Leafless parasites (0/'i'«^/^ff) 11. CuscuTA. 



Plants of the low country, especially of the dry region. Of our 46 

 species, 6 only reach up to the hill-country, to which Cuscuta rcjlexa 

 alone is confined. Cressa and 3 species of Ipotncca are seashore plants. 

 Only 3 species are endemic — Argyreia poptilifolia, Lettsomia /uiticortiia:- 

 foiia, and Jpoincea jucitnda. 



I. ERZCYBE, Roxb. 



A shrub, rambling or scandcnt, 1. alt., entire, fl. moderate- 

 sized, in racemes or panicles ; sep. 5, small, imbricate, slightly 

 enlarged in fruit ; cor. campanulate with a short wide tube, 

 lobes 5, imbricate, each deeply cut into 2 induplicatc plaited 

 segm., so as to appear lo-lobcd ; stam. 5, inserted at base 



