324 APOCYNACEAE, 
ALLAMANDA. 
(Family Apocynaceae). 
Tender usually scrambling 
shrubs with milky sap:  ever- 
green. Stems green or reddened, 
obtusely somewhat angled below 
the leaves, moderate: pith rather 
large, roundish, spongy. Buds 
rather small, solitary, sessile, 
roundish, with 2 pairs of scales. 
Leaf-scars variably opposite or in 
whorls of 3 or 4 or 5, half-round 
or half-elliptical, raised: bundle- 
trace 1, indistinct: stipule-scars 
lacking, but persistent outer 
scales occupy the position of sti- 
pules, which are considered to be 
characteristically absent from the 
family. Leaves simple, entire. 
Though the Tropical American 
allamandas are known only as 
conservatory plants in the North, 
in one or other of the distinct 
forms that are collectively named A. cathartica, their large 
yellow flowers are familiar everywhere. In the extreme 
South, they make effective and showy covering for trellises, 
etc. 
iy 
1. Bushy. A. neriifolia. 
Climbing. 2. 
2. Slender: flowers purple. A. violacea. 
Moderately stout: flowers yellow. (1). A. cathartica. 
