378 FLOWERS OF GARDEN AND GREENHOUSE 



DIPLADENIAS 



Natural Order Apocynace^. Genus Dipladenia 



DiPLADENiA (Greek, diploos, double, and aden, a gland). A genus of 

 ornamental stove evergreen climbing shrubs or under-shrubs, with 

 opposite entire leaves, and funnel-shaped or salver-shaped flowers, of 

 similar structure to the foregoing genera of Apocynace^, but having two 

 blunt glands at the base of the ovary. This is the chief character, upon 

 which the name of the genus is based. They are natives of Central and 

 South America. We give the names of the principal species, but these 

 have largely been superseded in cultivation by their hybrid offspring. 



Dipladenia atropurpurea (dark purple). Rootstock 

 tuberous, stems thin, wiry; leaves small, ovate, smooth; 

 flowers funnel - shaped, 2 inches across, purple crimson, with a yellow 

 throat. Brazil, 1842. 



D. boliviexsis (Bolivian). A small plant with slender stems, 

 oblong leaves, and white flowers, 2 inches across. Math a golden throat ; 

 in small racemes. Introduced from Bolivia, 1866. 



D. crassinoda (thick-jointed). Stems climbing, about 10 feet high, 

 with oblong-lanee-shaped leaves, and rose-coloured flowere. Introduced 

 from Rio Janeiro. 



D. splendexs (shining). Leaves broad - lance - shaped. Flowers 

 white, tinged with pink ; in long racemes, opening successively for months. 

 Native of the Organ Mountains. 



Garden Varieties and Hybrids. 



across. Hybrid lietween D. trnssin- D. houttcana, an improved' var. of D. crass- 

 vdii and />. sphitdnis. j inoila, with orange-coloured tliroat. 



I), aiiuni'f, rosy pink. j 7). hijbrida, flaming crimson-red. 



crimson. Hybrid. D. nobilis, rosy purple changing to orange- 



1). carism,,!',, Idush pink streaked with red. 



rose ; 5 inclies across. j D. rcghm, blusli with rosy throat. 



Dipladeniasi^\\o\\\A\)Q grown in a warm moist stove 

 compost of fibrous peat and silver sand. They require 

 careful watering at all times, and during the winter they should be kept 

 almost dry. The stems twine readily, and they are therefore best grown 

 on strings stretched near the roof, so that they can be cut dowm and 

 trained on a balloon or other trellis, or round a pillar, when the flowers 

 are about to develop. 



