958 APOCYNACEE. (DOGBANE FAMILY.) 
1. L. lacunosum, Griseb. Leaves (1'-2/ wide) cordate, entire, smooth; - 
petioles (6 — 12' long) filiform ; seeds smooth.  (Villarsia cordata, ÆU.) — Shal- 
low ponds, Florida, and northward. June and July. 
2. L. trachyspermum, Gray. Leaves (3'—5! wide) circular, crenate, 
rough and pitted beneath; petioles stout, dotted, elongated ; seeds glandular- - 
roughened. (Villarsia trachysperma, Elk) — Ponds in deep water, Florida to 
North Carolina, and westward. April-June. 
* 
Orper 102. APOCYNACEJE. (Docpane Fay.) ` 
Herbs or shrubs, with acrid milky juice, mostly opposite entire exstipu- 
late leaves, and regular eymose or panicled flowers. — Calyx free, 5-parted, 
imbricated in the bud, persistent. Corolla bell-shaped, funnel-shaped, or 
salver-form, 5-lobed, convolute in the bud. Stamens 5, distinct, inserted - 
on the tube of the corolla: anthers mostly sagittate, erect, introrse. Pol- 
lén granular. Ovaries 2, distinct, their styles united. Fruit few — many- 
seeded. Seeds anatropous or amphitropous, naked, or bearing a tuft of 
down at the apex (comose). Embryo straight in scarce albumen. 
Synopsis. 
* Fruit a many-seeded follicle. 
ê + Seeds comose. Leaves opposite. 
1. APOCYNUM. Corolla bell-shaped, with scale-like appendages at the base of the lobes. 
Herbs, 
2. FORSTERONIA. Corolla funnel-shaped. Stamens inserted at the base of the corolla. 
Twining shrubs. 
3. ECHITES. Corolla funnel- or salver-shaped. Stamens inserted above the base of the 
corolla. 3 
i + + Seeds naked. Leaves opposite or alternate. 
4. AMSONIA. Corollafunnel-shaped. Flowers panicled. Leaves alternate. 
5. VINCA. Corollasalver-shaped. Flowers axillary. Leaves opposite. 
* * Fruit a few-seeded drupe. 
6. VALLESIA. Corolla salver-shaped. Leaves alternate. Flowers in cymes. 
l APOCYNUM, Toum. Inp1an HEMP. 
.. Calyx 5-parted. Corolla bell-shaped, 5-lobed, with scale-ike appendages 8 . 
the base of the lobes. Stamens inserted on the base of the corolla: anthers . 
sagittate. Stigma sessile, 2-lobed. Follicles long and slender. Seeds numer 
ous, obovoid, comose. — Perennial erect branching herbs, with opposite oval OF . 
oblong mucronate petioled leaves, and small white flowers in lateral and termi- 
nal 
1, A. cannabinum, L. Stem smooth, with erect branches ; leaves oval - 
or oblong, te 
d than the leaves; calyx-lobes lanceolate, as long as the tube of the wn 
corollas lobes of the corolla erect. (A. pubescens, R. Br.) — Var, GLABERBI | 
» pubescent beneath ; cymes terminal, close-flowered, sho = a 
