CONYOLVULACEjE. III. ARGTREIA. IV. BLINKWORTHIA. V. HCMBERTIA. 



257 



mss. Convolv. multiflorus, Heyne, herb. Conv. confertus, 

 Ham. herb. Leaves 2-3 inches long, and 1 to 2 broad; the 

 older leaves sometimes 6 inches long, and as much broad. Co- 

 rolla 6-9 lines long, pink-coloured, clothed with strigose hairs 

 outside ; lobes acute. Berry pea-formed, red. Flowers sessile 

 on the branches of the peduncle. 



Bristly Argyreia. Fl. July, Aug. Clt. 1818. Shrub tw. 



25 A. RCBICU'NDA (Choisy, I. c. p. 426.) downy ; leaves 

 roundish, hardly-cordate, obtuse, furnished with a few hairs 

 above, tomentose beneath ; peduncles stiff, exceeding the petioles, 

 brachiately corymbose ; bracteas ovate or ovate-roundish ; sepals 

 unequal : outer ones the largest, ovate-roundish, very blunt : inner 

 ones shorter and narrower ; corolla small. H . *^. S. Native of 

 the Burman Empire, on Mount Taong Dong. Convolvulus rubi- 

 cundus, Wall. cat. no. 1409. Leaves rather silvery beneath, an 

 inch long, and as much broad. Peduncles tcmentose. Corolla 

 4-5 lines long, glabrous, silky outside ; lobes acute. Flowers 

 disposed loosely. 



iteddisJt-fiovrered Argyreia. Shrub twining. 



26 A. TOMENTOSA (Clioisy, 1. c.) clothed with down: leaves 

 pvate, obtuse at the base, bluntish at the apex, and mucro- 

 nulate. smoothish above, but clothed wish cinereous tomentum 

 .beneath ; peduncles very short, capitately many-flowered ; brac- 

 teas ovate or ovate-orbicular, or ovate-lanceolate, repand ; sepals 

 linear-lanceolate : outer ones the largest. h . ^. S. Native of 

 the Burman empire, on the banks of the Irawaddi. Convolvulus 

 multibracteatus, Wall. cat. no. 1408. 1. Leaves 2-3 inches 

 long, and 1 to H broad. Corolla tubularly salver-shaped ; tube 

 glabrous ; limb acute, silky outside. 



J'ar. p, cordata (Choisy, 1. c. p. 427.) leaves dilated at the 

 base, and cordate, with a rather deep, very blunt recess. J} . 

 S. Native on the banks of the Irawaddi, and Lower Nipaul. 

 Convolvulus p cordatus, Wall. mss. Conv. vestitus, Wall. cat. 

 no. 1411. Berry pea-shaped. 



Tomentose Argyreia. Shrub twining. 



V. AGGKEGA'TA ^Choisy, 1. c. p. 4-27.) clothed with hoary 

 tomentum ; leaves ovate-cordate, glabrous above, but clothed 

 with hoary tomentum beneath ; peduncles exceeding the petioles 

 a little; many-flowered; flowers capitate; bracteas in volucrating, 

 ovate-orbicular, hoary ; sepals ovate, obtuse ; corolla small. J; . 

 S. Native of Coromandel, Orissa, Ceylon, Mysore, Taong 

 Dong, Ava, &c. Lettsomia aggregata, Roxb. fl. ind. 2. p. 76. 

 Convolvulus Orixensis, Rottler, and Klein, mss. Conv. canes- 

 cens ?, Roth, nov. spec. p. 107. Rceni. et Schultes, syst. 4. p. 

 274. ? Conv. Heynii ?, Spreng. syst. 1. p. 699. Ipomae'a im- 

 bricata, Roth, nov. spec. p. 112. Rcem et Schultes, syst. 4. p. 

 249. Conv. imbricatus. Spreng. syst. 1. p. 613. Conv. aggre- 

 gatus, Bot. gard. Conv. cane=,cens, Spreng. Leaves obtuse at 

 top, sometimes sub-emarginate, 2-3 inches long, and about the 

 same in breadth. Corolla campanulate, hardly longer than the 

 calyx, red ; lobes acute, villous outside, emarginate, ex Wall. 



Aggregate-flowered Argyreia. Shrub not tw. 



28 A. CYMOSA (Sweet, liort. brit. p. 289. Choisy, 1. c. p. 428.) 

 clothed with pruinose down ; leaves roundish-cordate, or reni- 

 formly-cordate, obtuse, terminated by a very short mucrone, 

 glabrous on both surfaces, or clothed with pruinose down ; pe- 

 duncles equal in length to the leaves, as also exceeding them, 

 leafy at top, and cymosely many-flowered ; bracteas ovate- 

 roundish, obtuse, plicately recurved ; outer sepals like the brac- 

 teas ; inner sepals ovate-linear ; corolla showy. I? . ^. S. Na- 

 tive of Malabar, on the mountains. Lettsomia cymosa, Roxb. 

 fl. ind. 2. p. 82. Stems compressed. Leaves green, 1-2 inches 

 long, and about the same in breadth. Corolla tubularly funnel- 

 shaped, villous outside, pale pink. Berry yellow, 1-4-seeded. 



Cym<we-flowered Argyreia. Clt. 1823. Shrub twining. 



29 A. Acr'iA (Lour. coch. p. 135.) frutescent; leaves ovate, 

 VOL. nr. 



subcordate, mucronate, clothed with silvery-silky down beneath, 

 glabrous above ; flowers numerous, disposed in loose, terminal 

 panicles ; bracteas oblong, obtuse, clothed with hoary, silky 

 down outside: outer sepals largest, ovate, bluntish : all clothed 

 with hoary tomentum outside ; corolla white, showy. )j . / "\ S. 

 Native of China. Argyreia festiva, Wall. pi. asiat. rar. 1. p. 68.' 

 t. 76. Leaves 4-5 inches long, and 3 to 3| broad. Panicle 

 corymbose. Corolla an inch long, campanulate, much higher 

 than the calyx ; lobes lanceolate, obtuse, hairy, outside. Berry 

 red. 



Acute Argyreia. Shrub tw. 



30 A. OBTUSIFO'LIA (Lour. coch. p. 134. Choisy, 1. c. p. 

 429.) frutescent ; leaves ovate, obtuse, glabrous above, but clothed 

 with silky down beneath ; flowers disposed in loose, panicled 

 corymbs ; bracteas linear-lanceolate ; flowers adpressed ; sepals 

 oblong-linear, outer ones the largest. Jj . *"\ S. Native of 

 Cochinchina, in hedges. Stem clothed with velvety down. 

 Leaves 2-4 inches long, and 1-2 broad, sometimes mucronulate. 

 Corolla white. Berry red. 



Blunt-leaved Argyreia. Shrub twining. 



f A species hardly known. 



31 A. ARBOREA (Lour. coch. p. 135. Choisy, 1. c. p. 430.) 

 arboreous ; leaves ovate, acute, wrinkled, entire, glabrous, re- 

 flexed ; racemes terminal ; sepals inflated, red ; corolla with a 

 longish, filiform tube, and roundish segments. ^ . G. Native 

 of Cochinchina, in woods. Stem 8 feet high, with spreading 

 branches. Corolla white or yellow. Berry 4-celled, 1 -seeded. 



Arboreous Argyreia. Shrub 8 feet. 



Cult. Argyreia is a most splendid genus of plants, well worth 

 the cultivator's care. The greater number of the species are 

 robust, extensive twiners or climbers, usually requiring more 

 space to run than can well be spared for that purpose in any 

 stove or hothouse, before they will flower ; some of them, how- 

 ever, as A. ciineifblia, being dwarfer plants, produce their 

 elegant blossoms in abundance. All the species grow well in 

 rich light soil, or a mixture of peat, loam, and sand; and cuttings 

 root readily if planted in sand or mould, with a hand-glass placed 

 over them, in a littje bottom heat. 



IV. BLINKWO RTHIA (named by Choisy, after Mr. Blink- 

 worth, who collected numerous specimens of plants, around 

 Rangoon, and transmitted them to Dr. Wallich.) Choisy, in 

 mem. soc. phys. genev. 6. p. 430. t. 4. 



LIN. SYST. Pentandria, Monogynia. Bracteas 3, forming 

 an involucrum, and as if it were another calyx. Sepals 5. Co- 

 rolla short, cylindrically urceolate. Style 1 ; stigma capitately 

 2-lobed. Berry 1 -seeded. A shrub, allied to Argyreia ; but is 

 distinguished from it, in the involucrum, corolla, and habit. 



1 B. LYCIOIDES (Choisy, 1. c.) stem terete, villous ; leaves 

 linear, obtuse, mucronulate, on very short petioles, glabrous 

 above, and rather silky beneath ; peduncles short, 1-flowered; 

 sepals ovate- orbicular. Ij . ^. ? S. Native on the banks of 

 the Irawaddy, &c. Convolvulus lycioides, Wall, cat. no. 1390. 

 Leaves 6-9 lines long, and 1-3 broad. Corolla a little longer 

 than the calyx, 5-toothed at apes, blackish in the dried state, 

 and glabrous. Berry girded by the calyx. 



Lycium-like Blinkworthia. Shrub tw. ? 



Cult. For culture and propagation see Argyreia, above. 



V. HUMBE'RTIA (probably named after some individual 

 of the name of Humbert.) Lam. diet. 2. p. 356. ill. t. 103. 

 Choisy, conv. in. mem. soc. phys. gen. 6. p. 431. Endrachium, 

 Gmel. syst. veg. 1. p 339. Juss. gen. p. 133. Thouinia, Smith, 



L L 



