366 ULMACEAE 
4. MOMISIA F. G. Dietr. 
Spine-armed shrubs or small trees, with usually pubescent or scabrous foliage. Leaf- 
blades often leathery, variously toothed, nearly equilateral : stipules in the form of spines. 
Flowers polygamo-monoecious, at least the staminate in elongated axillary cymes. Calyx 
with 4-5 lobes, deciduous. Stamens 4-5, exserted: filaments longer than the extrorse 
anthers. Ovary sessile, 1-celled. Stigmas 2-cleft. Drupe oblong, ovoid or globose, some- 
times slightly angled, with a more or less flattened, tuberculate or reticulated stone. 
Leaf-blades nearly smooth : drupe 8-12 mm. in diameter: stone with warty faces. 1. M. aculeata. 
Leaf-blades very scabrous : dupes 5-8 mm. in diameter: stone with reticulated faces. 2. M. pallida. 
1. Momisia aculeata (Sw.) Kl. A spreading or often climbing shrub, 1-3 m. tall, 
with little or no pubescence, its branches and twigs with more or less recurved stipular 
spines. Leaf-blades ovate, oval or oblong-ovate, obtuse or acutish, nearly entire or 
coarsely crenate-serrate above the middle, rounded or cordate at the base, slightly inequi- 
lateral and sometimes oblique at the base, nearly smooth on both sides, short-petioled : 
flowers in cymes: pedicels 2-5 mm. long: drupes globose-ovoid, 8-12 mm. long, obscurely 
4-angled : seeds obliquely oval, slightly flattened, warty. [Celtis aculeata Sw. ] 
In sandy soil, Florida Keys and the valley of the Rio Grande. Also in tropical America and the 
West Indies. Spring. 
2. Momisia pallida (Torr.) Planch. A spreading shrub 2-4 m. tall, with puber- 
ulent twigs and inflorescence, its branches armed with straight stipular spines. Leaf-blades 
ovate to oblong, 2-3.5 em. long, acute or apiculate, 3-nerved, nearly entire or coarsely 
toothed, slightly inequilateral, often oblique at the rounded or subcordate base, very 
scabrous on both sides, short-petioled : cymes 3-5-flowered : pedicels 1-2 mm. long, shorter 
than the petioles: drupes subglobose, 5-8 mm. in diameter, yellow, orange or red, with 
an acid pulp : seeds oval or obovoid, 4-ribbed, reticulated. [Celtis pallida Torr. ] 
In sandy soil, Floridaand Texas to northern Mexico. Spring. 
5. TREMA Lour. 
Tall shrubs or trees, unarmed, usually pubescent. Leaves alternate, often 2-ranked : 
blades toothed, 3-nerved at the base, equilateral or only slightly inequilateral, short-peti- 
oled : stipules lateral. Flowers mostly monoecious or polygamous, the perfect mostly fer- 
tile, in axillary cymes. Sepals of pistillate flowers induplicate-valvate, those of the perfect 
flowers slightly imbricated. Stamens 4-5. Ovary sessile. Stigmas 2, entire. Ovule 
pendulous. Drupe ovoid to globose. 
1. Trema Floridàna Britton. A shrub or tree 6 m. tall, with copiously pubescent 
foliage. Leaf-blades ovate, oblong-ovate or lanceolate, 4-10 cm. long, more or less acu- 
minate, scabrous-pubescent above, softly pubescent beneath, finely serrate, rounded or 
cordate at the base : flowers greenish : drupes subglobose, yellow or orange. 
In woods and hammocks, peninsular Florida and the Keys. 
Order 9. POLYGONALES. 
Herbs, shrubs, trees or vines. Leaves alternate, or sometimes opposite or 
whorled: blades mostly entire: stipules mostly present, usually as a sheath. 
Flowers perfect, monoecious, dioeeious or polygamous, in variously disposed 
clusters. Calyx inferior, of 2-6 more or less united sepals sometimes developing 
keels or wings, often corolloid. Androecium of 2-9 stamens. Filaments often 
dilated at the base. Anthers 2-celled, opening longitudinally. Gynoecium 2-3- 
carpellary. Ovary superior, 1-celled. Styles 2 or 8, more or less united. 
Stigmas capitate or tufted, rarely 2-cleft. Ovule solitary, orthotropous. Fruit 
a lenticular-or 3-angled achene, usually invested by the persistent calyx. Seed 
with horny or mealy endosperm. Embryo with incumbent or accumbent coty- 
ledons. 
