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calyx, roundish, two-celled, one, two, or three-valved (commonly 

 three-celled, seldom two or four-celled: partition alternate with the 

 valves): the seeds in pairs, roundish (one or two seeds in each cell, 

 sometimes abortive, few with a twisted embryo). 



The species mostly cultivated are: 1. C. purpurea, Purple Convol- 

 vulus, or Convolvulus Major; 2. C. tricolor, Three-coloured Trailing 

 Convolvulus, or Convolvulus Minor; 3. C.nil, Anil, Blue or Azure 

 Convolvulus; 4. C. caiwriensis, Canary Evergreen Convolvulus; 

 5. C. cenontm, Silver-leaved Convolvulus; 6. C. batatas Tuberous- 

 rooted Convolvulus, or Spanish Potatoes. 



The first is an annual plant, that rises on support to the height of 

 ten or twelve feet. In its native situation it sends out long branches, 

 which twist about the trees, and rise to a great height. The leaves 

 are smooth, heart-shaped, ending in long points; the ears at the base 

 are large and rounded, and the petioles long and slender. The 

 peduncles are long, each sustaining three purple c 1 ure i flowers. 

 It flowers from the end of June till destroyed by the frost. It is a 

 native of America. 



It is usually known in garden- culture by the name of Convolvulus 

 Major. 



There are varieties, with deep purple flowers, with white flowers, 

 with red flowers, and with whitish blue flowers. 



The second species is an annual plant, with several thick herb*, 

 ceous slalks, about two feet long, not twining, but bending towards 

 the ground, upon which many of the lower branches lie prostrate. 

 The leaves are likewise sessile. The peduncles come out just above 

 the leaves at the same joint, and on the same side ; they are about 

 two inches long, each sustaining one large open bell-shaped flower? 

 of a fine blue colour, with a white bottom, varying to pure white, 

 and sometimes beautifully variegated with both colours. The white 

 flowers are succeeded by white seeds; but in the blue ones they are 

 dark-coloured. It is a native of Barbary, &c. commonly known in 

 garden-culture under the title of Convolvulus Minor. 



The third is also an annual plant, rising with a twining stalk eight 

 or ten feet high. The leaves are woolly, ending in sharp points and 



