360 APOCYNACEE. (DOGBANE FAMILY.) 
of the stamens, bell-shaped, scarcely longer than the ovate ‘spreading lobes ; 
anthers tapering into a long bristle-like awn ; glands of the nectary 5, rounded, 
as long as the ovaries. (E. suberecta, Andr. Neriandra suberecta, A. DC.) = 
Sandy shores, South Florida. — Stem 1°-2° high. Leaves 1}/- 2! long. Tube 
of the corolla 1! long, 3 wide. 
4. AMSONIA, Walt. 
Calyx small, 5-parted. Corolla funnel-form, 5-lobed, bearded within. Sta- 
mens inserted above the middle of the tube: anthers oblong, obtuse. Stigma 
globose, surrounded by a cup-shaped membrane. Follicles slender. Seeds ina 
“single row, terete, truncated at each end, naked. — Erect branching perennial 
herbs, with alternate leaves, and small pale blue flowers in a terminal panicle. 
1. A. Tabernsemontana, Walt: Stem smooth, branching above ; leaves 
ovate, ovate-lanceolate, or lanceolate, acute or acuminate at each end, glaucous 
beneath, short-petioled ; tube of the corolla slender, smooth, or woolly above, 
many times longer than the minute calyx; follicles spreading. (A. latifolia, 
Michz. A. salicifolia, Pursh.) — Swamps and wet banks, Florida to Mississippi, 
and northward. May and June.— Stem 2° high. Leaves 1/-4! long, often 
slightly pubescent beneath. Panicle open or contracted. Follicles 4/ — 6' long. 
2. A. ciliata, Walt. Stem hairy, at length much branched above ; leaves 
very numerous, linear or linear-lanceolate, acute at each end, fringed on the 
margins ; corolla smooth.— Dry sandy soil, Florida to North Carolina. April 
and May.— Stem at length 29-39 high. Leaves 1/-2! long. Corolla pale 
blue or white. Follicles more slender than those of the preceding. 
5. VINCA, L. PERIWINKLE. 
Calyx 5-parted. Corolla salver-form, 5-lobed, thickened or angular at the 
throat, the narrow tube hairy within. Anthers oblong, longer than the filaments. 
Glands 2, alternating with the ovaries. Style slender: stigma thick, with an 
inverted cup-shaped membrane at the base. Follicles 2, linear, erect. 
oblong, rough, naked. — Herbs or shrubby plants, with opposite short-petioled 
leaves, and axillary mostly solitary showy flowers. ' 
) 
1. V. rosea, L. Shrubby, pubescent; stem erect, branching ; leaves » 
long, rounded at the apex, mucronate; flowers solitary or by pairs, nez y 
sessile; lobes of the corolla white or pale rose-color, obliquely obovate, 
nate, shorter than the downy tube; a row of hairs at the throat and another 0R - 
the tube below. — South Florida, and in the streets of Apalachicola, probably 
introduced. Flowering through the summer. 
6. VALLESIA, Ruiz and Pavon. 
Calyx 5-parted. e l Corolla salver-shaped, 5-lobed. Stamens inserted o the 
throat of the corolla : anthers cordate-ovate, longer than the slender filaments. — 
- Mony none. Ovaries 4-ovuled. Stigma club-shaped. Drupe mostly solitary» — 
