PLATANACEX. (PLANE-TREE FAMILY.) 417 
beneath; pedicels and calyx smaller.— Swamps of the Apalachicola River, 
Florida. Jan. and Feb. — A small tree. 
4 U. alata, Michx. (Wuanoo.) Branches corky-winged ; leaves small, 
` ovate-lanceolate, acute, sharply serrate, commonly even and rounded at the base, 
rough above, pubescent beneath, nearly sessile; flowers clustered, on slender 
pedicels ; fruit oval, downy on the margins. — Rich soil, Florida to North Car- 
olina. — A small tree. Leaves 1'—11! long. 
2. PLANERA, Gmel PLANER-TREE. 
Flowers polygamous, clustered. . Calyx bell-shaped, 4 — 5-cleft. Stamens4-5: 
anthers extrorse. Ovary l-celled. Styles short. Fruit nut-like, coriaceous, 
wingless. Embryo straight, without @pumen. — Small trees, with the foliage of 
the Elm. 
1. P. aquatica, Gmel. Leaves ovate, short-petioled, acute, serrate, rough- 
_ ish; flowers in small roundish clusters, appearing before the leaves; nut ovate, 
covered with warty scales. — River-swamps, Florida to North Carolina. Feb. 
and March. — A tree 20°-30° high. Leaves 1! - 14 long. 
3. CELTIS, Tourn. NETTLE-TREE. TE 
Flowers perfect or polygamous, apetalous. Calyx of five sepals. Stamens 5: 
anthers introrse. Ovary l-celled. Styles 2, slender, pubescent. Drupe globose. 
Embryo curved around scanty gelatinous albumen. Cotyledons wrinkled. — 
‘Trees Leaves petioled, commonly oblique at the base. Flowers axillary, soli- 
tary, or few in a cluster, greenish. 
1. C. occidentalis, L. Young leaves and branchlets silky; leaves (2! 
long) ovate, acuminate, sharply serrate, abruptly contracted at the base, soon 
‘smooth, ferrugineous beneath ; fertile flowers mostly solitary, on drooping pe- 
-duncles; the sterile ones 2-4 in a cluster; drupe dark purple, with a thin sweet 
pulp. — Rich soil, Georgia, and northward. March.— A tree 409 — 60° high. — 
Var. iwTEGRIFOLIA. (C. integrifolia, Nutt) Leaves ovate or ovate-lanceolate 
(2! - 3! long), acuminate, entire, rounded, or the lower ones cordate at the base, 
Toughened with minute elevated points.— Sandy soil, Apalachicola, Florida 
(perhaps introduced), and westward. — A small tree. Branches and leaves ` 
2ranked.— Var. euMiLA. (C. pumila, Pursh.)  Shrubby; leaves (1/-1}/ 
. long) ovate, acute, serrate, obtuse at the base, pale beneath, very rough above; 
drupe glaucous. — Shady woods, Florida to North Carolina, March and April. 
—Stem 59 — 10° high. pee i 
„ORDER 126. PLATANACEÆ. (Pranr-rrer FAMILY.) 
i: _ Large trees, with alternate palmately-lobed petioled stipulate 
