360 AVOCTSXCT.JE. (DOGBANE FAMILY.) 



of the Ftamcns, bcll-shapcd, scarcely longer than the ovate spreading lobes ; 

 anthers tapering into a long bristle-like awn ; glands of the nectary 5, rounded, 

 as long as tlie ovaries. (E. subcrecta, Andr. Neriandra suberecta, A. DC.) — 

 Sandy shores, South Florida. — Stem 10-2° high. Leaves U'-2' long. Tube 

 of the corolla 1' long, i' wide. 



4. AMSONIA, Walt. 



Calyx small, 5-partcd. Corolla funnel-form, 5-lobcd, bearded within. Sta- 

 mens inserted above the middle of the tube : anthers oblong, obtuse. Stigma 

 •dobose, surrounded by a cup-shaped membrane. Follicles slender. Seeds in a 

 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. Tabernssmontana, Walt. Stem smooth, branching above ; leaves 

 ovate, ovatc-lanccolate, 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, 

 Michx. A. salicifolia, Pursh.) — Swamps and wet banks, Florida to Mississippi, 

 and northward. May and June. — Stent 2° higl^. Leaves l'-4' long, often 

 slightly i)ubcscent l)cneath. 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. — Diy sandy soil, Florida to North Carolina. April 

 and May. — Stem at length 2° -3° high. Leaves l'-2' long. Corolla pale 

 blue or white. Follicles more slender than those of the preceding. 



5. VINCA, L. Periwinkle. 



Calyx S-parted. Corolla salver-form, 5-lobed, thickened or angular at the 

 throat, the narrow tube hairy within. Anthers oblong, longer than the fdaments. 

 Glands 2, alternating with the ovaries. Style slender : stigma thick, with an 

 inverted cup-shaped membrane at the base. Follicles 2, linear, erect. Seeds 

 oblong, rough, naked. — Herbs or shrubby plants, wiih opposite short-petiohd 

 leaves, and axillary mostly solitary showy flowers. 



1. V. rosea, L. Shrubby, pubescent; stem erect, branching; leaves ob- 

 long, rounded at the apex, mueronate ; flowers solitary or by pairs, nearly 

 sessile ; lobes of the corolla white or pale rose-color, obliquely obovatc, muero- 

 nate, shorter than the downy tube ; a row of hairs at the throat and another on 

 the tube below. — South Florida, and in the streets of Apalaehicola, probably 

 iotroduccd. Flowering through the summer. 



• 



6. VALLESIA, Ktiiz and Pavon. 



Calyx 5-partcd. Corolla salver-shaped, 5 lobed. Stamens inserted on the 

 throat of tlic corolla : anthers cordate-ovate, longer than the slender fdaments. 

 Nectary none, (^varies 4-c)vulcd. Sligma club-shaped. Drupe mostly solitary, 



