ASCLEPIADACEAE. (MILKWEED FAMILY.) 371 
1- O. liirsiitus. Michx. Minutely pubescent, with longer 
scattered hairs interspersed; leaves ovate-heart-shaped, obtusish or 
pointed; peduncles few-flowered, shorter than the petioles ; pedicels 
very short; bractlets awl-shaped; lobes of the corolla oblong, minute¬ 
ly papillose-hairy outside (dingy purple above); pods armed with 
spine-like soft processes. — Rich river-banks, W. Pennsylvania and 
southward. July. 
2. O, macrophyllus, Michx. Leaves broadly ovate-heart- 
shaped, pointed; peduncles and pedicels longer than the petioles; bract- 
lets linear; lobes of the corolla linear or narrowly oblong, downy out¬ 
side (dingy purple above) ; pods ribbed-angled. — Shady banks, Penn¬ 
sylvania and southward. July. —Hairy, like the last; the leaves 
3' -6' wide. 
5. PERIPLOCA, L. Periploca. 
Calyx 5-parted. Corolla 5-parted, wheel-shaped, with 5 awned 
scales in the throat. Filaments distinct: anthers coherent with 
the apex of the stigma, bearded on the back: pollen-masses 5, 
each of 4 united, singly affixed directly to the glands of the stig¬ 
ma. Stigma hemispherical. Pods smooth, widely divergent. 
Seeds with a silky tuft. —Twining shrubby plants, with smooth 
opposite leaves, and panieled-cymose flowers. (Name from it epi- 
7 t\okt] , a coiling round , in allusion to the twining stems.) 
1. P. GlVTCa, L. Leaves ovate or ovate-lanceolate, shorter 
than the loosely-flowered cymes; divisions of the brownish-purple 
corolla linear-oblong, very hairy above, the margins revolute. — Intro¬ 
duced from Europe, and sparingly naturalized near Rochester, &c., 
in W. New York. Aug. 
Order 81. OLEACEiE. (Olive Family.) 
Trees or shrubs , with opposite and pinnate or simple 
leaves , a 4-cleft (or sometimes obsolete) calyx , a regular 4- 
cleft or nearly or quite 4-petalous corolla which is valvate 
in the bud , sometimes apetalous , but only 2, or rarely 3, sta¬ 
mens, and a 2-celled ovary with 2 suspended ovules in each 
cell. — Seeds anatropous, with a large straight embryo usu¬ 
ally in hard fleshy albumen. —A small family of which the 
Olive is the type, also represented by the Lilac ( Syringa 
vulgaris , 5. Persica , &c.) and the Privet in common cul¬ 
tivation, and by two indigenous genera, of which the Ash 
