ASCLEPIADACEAE, 165 
gamopetalous flowers; and paired cylindrical follicles which are 
infrequently seen. 
Leaves lanceolate: flowers blue. (Running “myrtle”). V. minor. 
Family ASCLEPIADACEAE. Milkweed Family. 
A moderate-sized family, chiefly of herbs with milky sap, 
some of which are used in hardy perennial planting. Hoya, the 
waxflower, and Stapelia, the star-“cactus”, are frequent in green- 
houses. 
PeripLocA. Silk Vine. 
Deciduous twining woody plants with milky sap; round 
stems; opposite raised round leaf-scars with a single curved 
bundle-trace; no stipule-scars; small hairy buds with few scales; 
moderate entire petioled leaves; rather large perfect purplish 
gamopetalous flowers in sparse stalked axillary clusters; slender 
paired follicles; and small winged seeds. 
Leaves ovate, round-based, acuminate. P, @tacea. 
Leaves lanceolate. P. graeca angustifolia. 
Family POLEMONIACEAE. Phlox Family. 
A rather small family of herbs, much used as hardy peren- 
nials. 
PHLOX. 
Mostly perennial herbs with opposite leaves; gamopetalous 
salver-shaped white or reddish perfect flowers in sometimes 
panicled cymes; and small 2-seeded capsules. The following 
somewhat woody evergreen matted species with small linear 
leaves is used for rockeries, etc. 
Flowers bluish or pink. (Ground pink). P. subulata. 
Flowers white. P. subulata alba. 
Family VERBENACEAE. Verbena Family. 
A moderately small family, chiefly of woody species in the 
tropics, yielding tle teak lumber used in ship-building. Among 
bedding plants Verbena and Lantana are familiar examples—the 
latter a bad weed in Hawaii, and one Clerodendron is a very ef- 
fective greenhouse climber, 
