440 ULMACE.E. (ELM FAMILY.; 



4. 17. racemosa, Thomas. Branches corky; bud scales dowuy ou the 

 margins ; leaves ovate-oblong, or oval, obliquely cordate, sharply serrate, 

 pubescent beneath ; Mower clusters racemose; fruit roundish, the margins 

 dowuy. River banks, Tennessee, and northward. 



5. U. alata, Michx. (\VHAHOO.) 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 Carolina. A small tree. Leaves !'-!' long. 



2. PLANERA, Gmel. PLANER TREE. 



Flowers polygamous, clustered. Calyx bell-shaped, 4-5-cleft. Stamens 

 4-5: anthers extrorse. Ovary 1 -celled. Styles short. Fruit nut-like, cori- 

 aceous, wingless. Embryo straight, without albumen. Small trees, with 

 the foliage of the Elm. 



1. P. aquatica, Gmel. Leaves ovate, short-petioled, acute, serrate, 

 roughish ; flowers in small roundish clusters, appearing before the leaves ; 

 nut ovate, covered with warty scales. River swamps in the lower districts. 

 Feb.- March. A tree 20 -30 high. Leaves 1'- !' long. 



3. CELTIS, Tourn. NETTLE TREE. 



Flowers perfect or polygamous, apetalous. Calyx of five sepals. Stamens 5 : 

 anthers introrse. Ovary 1 -celled. Styles 2, slender, pubescent. Drupe glo- 

 bose. Embryo curved around scanty gelatinous albumen. Cotyledons 

 wrinkled. Trees. Leaves petioled, commonly oblique at the base. Flowers 

 axillary, solitary, 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, ferruginous 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 40- 60 

 high. Var. INTEGRIFOLIA. (C. integrifolia, Nntt.) Leaves ovate or ovate 

 lanceolate (2' -3' long), acuminate, entire, rounded, or the lower ones cordate 

 at the base, roughened with minute elevated points. Sandy soil, Apalachi- 

 cola, Florida (perhaps introduced), and westward. A small tree. Branches 

 and leaves 2-ranked Var. PUMILA. (C. pumiln, Piirsh.) Shrubby; leaves 

 (l'-H' long), ovate, acute, serrate, obtuse at the base, pale beneath, very 

 rough above ; drupe glaucous. Shady woods, Florida to North Carolina. 

 March- April. Stem 5 -10 high. 



4. TREMA, Lour. 



Chiefly like Celtis, but with fleshy albumen, and thick narrow incurved 

 cotyledons. Trees or shrubs. 



1. T. micrantha, Benth. & Hook. Shrub very leafy (10- 15 high), 

 the branchlets, etc. canescent ; leaves (!' long) rigid, oval, serrate; flowers 

 minute, in dense axillary cymose clusters; drupe small, yellow, globose. 

 (Celtis pallida, Torr.) Shell-mounds in Lastero Bay, South Florida (Garber). 



