1894.] D. Prain — Some additional species of Convolvulaceae. 89 



allow the name Rivea ornata Choisy, to continue to designate the plant from Southern 

 India, and be pi'eferal)le to name the North-Indian one Rivea Roxluryhii. Convolulus 

 Tarita Ham. (Wall. Cat. n. 2253) is not at Calcutta; the plant was collected at 

 Monghir : if it really be this species, it is prolmbly not fi-om a wild plant ; the only 

 Rivea reiDorted, since Dr, Buchanan-Hamilton's time, from the Monghir Hills is R. 

 hypocraterifonnis, which is common throughout Behar, 



3. ARGYREIA Lour, 



3 b. Argyrria venusta Clwisy, Convolv. Or. 36, and BC. Prodr. 

 ix., 330; leaves ovate cordate, obtuse or acute, glabrous above grey 

 toiuentose beneath ; corymbs peduncled dense ; bracts narrow oblong- 

 obtuse with a few ovate-acute larger intermixed, and usually one or two 

 foliaceous large ones at base of corymb ; coi'olla sparingly hairy without ; 

 berry brownish, fruiting sepals lanceolate-reflexed. Argyreia argentea 

 VAR. venusta Clarke, Flor. Brit. Ind. iv., 185. Argyreia zeylanica var. 

 hirsuta Kurz, For. Flor. Brit. Burma, ii., 215. Convolvulus festivus 

 Wall. Cat. n. 1414 {not Ai^gyreia festiva Wall, PI. As. Par). 



Bengal : Faridpur, Clarke. Bcrma : Pegu, McLelland, B. Scott ! Ava, 

 Wallich ! Mandalay, etc.. King's Collectors ! common. 



A large climber. Leaven usually 3-4 in. diam. (lower leaves sometimes as 

 much as 7 in., diam.) quite glabrous above at all stages ; petiole 2|-4 in. long. 

 Peduncles 2-4 in. ; coryinbs rather large ; bracts usually f in. by i in. Corolla \\ in. 

 to 1 5 in. long, tubular funnel-shaped, 1^ in. wide -at mouth; white or pale purple. 

 Berry \ in. diam., globose, very hard and tough ; sepals ultimately exceeding | in., 

 in fruit coriaceous deflexed. 



Avery distinct species, easily differentiated from A. argentea, with- which Choisy 

 and Clarke have associated it, by its leaves glabrous above, its totally different 

 tomentum on the leaves beneath; its longer, uaiTOwer, more reflexed sepals, and its 

 smaller hard fruit. 



5. Argyreia Hookeri Clarl-e. Add to synonyms of F. B. 1. : — 

 Argyreia zeylanica var. populifolia Kurz, For. Flor. Brit. Burma ii., 215. 

 Lettsomia ? Kurzii Clarke, Flor. Brit. Ind. iv., 196. 



Add to localities : — 



Nepal : Scully ! Assam : Goalpara, King's Collectors ! Burma : Chin 

 Hills, Prazer ! Pegu, K^trz ! Andamans : Coco group, common, Praia ! 

 South Andaman, common, F. H. Man ! King's Collectors ! 



6. Argyreia splendens Sweet. 

 Add to localities of F. B. I. : — 

 Naga Hills : Clarke, Collett ! 



7. Argyreia Championi Benth., Fl Hong-kong, 236(1861). A. 

 obtecta, Clarke, Flor. Brit. Ind. iv. 186 (1883). Convolvulus obtectus 

 Wall. Cat, 1416. Rivea ? obtecta Clioisy, Convolv. Or. 28 and DC. Prodr. 

 ix., 326. Lettsomia Championi Bth. ^^ Hook.f., Gen. PI ii., 869. 



J. II, 12 



