392 POLYGONACEA. (BUCKWHEAT FAMILY.) 
single; stamens included ; achenium ovate, acute. — South Florida, along the 
coast. — A shrub or small tree, with rigid spreading branches. Leaves 3!-5/ 
wide, very thick. Racemes 6! long. j 
2. C. Floridana, Meisner. Smooth; leaves petioled, somewhat coria- 
ceous, elliptical, obtuse at each end; racemes slender, terminal and on short 
lateral branches, recurved; pedicels 2-3 together, about the length of the 
calyx; stamens exserted; achenium ovoid, obtuse. — South Florida. — A small - 
tree. Leaves 2/'-3'long. Sheaths loose, brown. Racemes 2'—-3'long. Ache . 
nium 4” —5" long. 
6. BRUNNICHIA, Banks. 
Flowers perfect. Calyx bell-shaped, 5-parted, the tube enlarged in fruit and 
enclosing the free achenium. Stamens 8 or 10. Styles 3, slender: stigmas 
entire. Ovule borne on a slender cord from the base of the ovary, pendulous. 
Achenium obtusely 3-angled. Seed 6-furrowed. Embryo in one of the angles 
of the mealy albumen. — A smooth vine, climbing by terminal tendrils. Leaves - 
ovate or cordate-ovate, petioled, acute, deciduous. Sheaths obsolete. Flowers 
greenish, in axillary and terminal racemes, on slender pedicels, which become 
indurated and flattened in fruit. 
1, B. cirrhosa, Banks.— River-banks, Florida to South Carolina. April 
and May.— Stem shrubby, 109-209 long. Leaves 2'—3'long. Racemes v 
6'long. Bracts ovate, acuminate, 3-5-flowered. Fruiting pedicels curved. 
7. ERIOGONUM, Michx. 
Flowers perfect or polygamous, surrounded by an involucre. Calyx deeply 
6-cleft. Stamens 9. Ovary free, 3-sided. Styles 3: stigmas capitate. Ache 
nium 3-angled or 3-winged. Embryo straight in the axis of the albumen, Or- 
more or less curved. — Downy or woolly herbs. Leaves alternate, opposite oF 
. whorled. Sheaths none. Inflorescence various. 
1. E. longifolium, Nutt. Stem erect, tomentose, corymbose above, leafy 
below ; leaves smooth or villous above, white-tomentose beneath, the lowest clus- 
tered, oblong-linear, long-tapering at the base, the upper scattered, the uppermost 
bractlike ; involucre stalked, many-flowered, obtusely 5-toothed ; calyx 
* 
ceous, equal, woolly without. — Sand ridges, East Florida. 1j— Stem 29-9" —— E 
high. Lowest leaves 3! — 5! long. 
2. E. tomentosum, Michx. Stem erect, tomentose, corymbose above, à; ÉU 
leafy throughout ; leaves smooth above, white tomentose beneath, the lowest : 
clustered, obovate-oblong, long-petioled, the others in whorls of 3-4, elliptical, — 
sessile ; involucre sessile, obtusely 5-toothed ; calyx white, unequal, woolly with- 
out. — Dry pine barrens, Florida to South Carolina. July- Sept. i= Sum. 
. 9?-8? high. Lowest leaves 4/- 6’ long. Flowers very numerous on one side 
of the spreading branches. - aoe 
