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Convolvulus bicolor. Two-coloured 

 Bind-weed. 



Class and Order. 

 Pentandria Monogynia. 



Generic Character. 



Cor. campanulata, plicata. Stigm. 2. Caps. 2-locularis : 

 loculis dispermis. 



Specific Character and Synonyms. 



Convolvulus bicolor ; volubilis, pubescens, foliis cordatis an- 

 gulatis ; pedunculis axillaribus unifloris, bracteis lineari- 

 lanceolatis calyci involucriformi approximatis. 



Convolvulus bicolor. Hort. Bengal, p. 14. 



Convolvulus involucratus. Bot. Reg. 318. vix Willdenovii. 



Convolvulus bicolor is a native of Bengal and probably 

 of the Mauritius. It appears by the catalogue of the Calcutta 

 garden to be an herbaceous perennial, and to flower there in 

 the rainy season ; with us it seems to be annual and to blossom 

 in May and June in the stove. As in Convolvulus Tur- 

 pethum the two outer segments of the calyx are much larger 

 than the three internal ones which they enclose, but are not 

 fleshy as in that. There is a particularity pointed out by 

 Mr. Herbert in the Corolla of this plant that we have not 

 observed in any other species of Convolvulus, which is, that 

 the stamens are supported on five projecting bridges or valves 

 crossing the mouth of the tube, much in the same way as 

 those of Campanula arise from the points of arched valves at 

 the bottom of the tube: betwixt these valves appear five, 

 transparent, yellowish cells. 



Convolvulus involucratus of Willdenow is a native of 

 Guinea, and a specimen of it is preserved in the Banksian 



herbarium, 



