125 * 



calyx, roundis!), two-celled, one, two, or ihrcc-valvcd (coininonly 

 three-celled, seldom two or four-celled: partition allernalc wilh the 

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

 sometimes abortive, few with a twisted embryo). 



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

 vulus, or Convolvulus Major; 2. C. tricolor. Three-coloured 'J'railing 

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

 Convolvulus; 4. C, cauaricnsis, Canary Evergreen Convolvulus: 

 5. C. ceuorum. Silver-leaved Convolvulus; G. C. batatas 'J'uberous- 

 rooted Convolvulus, or Spanish l^olatoes. 



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. 'J'he leaves 

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

 are large and rounded, and the petioles long and slender. 'J'he 

 peduncles are long, each sustaining three purple-coloured 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 o^ Coiivokuhis 

 Major. 



There are varieties, uitli deep purple flowers, wilh while flowers, 

 with red flowers, and wilh whitish blue flowers. 



The second species is an annual planl, with several thick herh>, 

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

 the ground, upon which many of the lower branches lie [)rostrate. 

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

 the leaves at the same joint, and on th(^ same side; ihey are about 

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

 of a fine blue colour, wilh a white bollom, varying to j)ure white, 

 and sometimes beautifully variegated with both colours. 'J'he Avhite 

 flowers are succeeded by while seeds; but in the blue ones ihey are 

 <lark-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 planl, rising with a twining stalk eight 

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



