CYCADACEJ. (CYCAS FAMILY.) 437 
ORDER 133. CYCADACE/E. (Croas FauiLy.) 
"Trees or shrubs, with simple trunks, increasing by a terminal bud, like 
the Palms, and composed of a large pith, mixed with woody bundles or 
plates, enclosed in a cylinder of woody fibre and spiral vessels. Leaves 
pinnate, coiled in the bud, like Ferns. Flowers diccious, destitute of 
calyx and corolla. Sterile flowers consisting of 1-celled anthers inserted 
under the peltate scales of a cone-like ament. Fertile flowers consisting 
of naked ovules inserted under the scales like the sterile flowers, or on 
the margins of contracted leaves. Seed nut-like. Embryo in the axis of 
the albumen. Radicle ending in a long spiral cord. Cotyledons 2. 
Ll ZAMIA, L. 
Flowers in cone-like aments, with the peltate scales inserted on all sides of the 
common rachis. Anthers numerous. Ovules by pairs, pendulous. Seed round- 
ish, drupe-like. — Leaflets thickened at the base and articulated with the petioles, 
with numerous simple veins. 
1. Z. integrifolia, Willd. (Coont1e.) - Stem short, globular or oblong ; 
leaves petioled, spreading, with the numerous lanceolate or linear-lanceolate leaf- 
lets entire, or serrate near the apex ; aments oblong, obtuse, short-peduncled. — 
Low grounds, South Florida.— The stem abounds in starch, from which the 
Florida Arrowroot is obtained. : 
Crass II. MONOCOTYLEDONOUS or ENDOGENOUS PLANTS, 
Stems composed of cellular tissue and scattered bundles 
of woody fibre and vessels, destitute of proper pith, bark, or 
concentric layers, and increasing in diameter by the deposi- 
tion of new fibrous bundles. Leaves mostly alternate, entire, 
and parallel-veined, commonly sheathing at the base, seldom 
falling off by an articulation. Floral eo — by 
threes. Cotyledons single, 
* 
Orper 134. PALME. (Parws. 
Chiefly trees, with a thick woody stem (caudex), growing by a terminal 
bud, pinnate or fan-shaped leaves, which are plaited in the bud, and a 
.Spadix of small perfect or polygamous flowers. | Sepals ana pes : 
or more or less united, persistent. Stamens mostly 6, hypogy: or pe- 
 Higynous: anthers 2-celled, introrse. pey elek 'ommon j 
