440 ULMACE^. {V.LM FAMILY.) 



4. U. racemosa, I li>>iiias. HramlR's i<iikv; liiiil scak'S downy on the 

 niJirjjiiis ; loaves ovate-ohlung, or oval, oldiciuuly torilale, sliaiply serrate, 

 pulieseent l)eneutli ; Huwer clusters racemose ; fruit roundish, tlie margins 

 downy. — Kiver hanks, Tennessee, and iiurliiward. 



5. U. alata, Michx. (Whauou.) l}rani-lies corky-winged; leaves 

 BMiall, ovale-laneeiilate, acute, siiarply serrate, commonly even and rounded at 

 the liase, rough ahove, puhesceut beneath, nearly sessile; (lowers clustered, on 

 slender pedicels ; fruit oval, ilowuy on the margins. — Kich soil, Florida to 

 North Carolina. — A .-mall tree. Leaves 1'- U' long. 



2. PLANER A, (imel. I'LAMiK Tkee. 



J'lowers polygamous, clustLic<l. Calyx hell-shaped, 4-5-cloft. Stamens 

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

 aceous, wingless. Embryo straight, w ithout albumen. — Small trees, with 

 the foliage of the Elm. 



1. P. aquatica, Gmel. Leaves ovate, sliort-jietioled, acute, serrate, 

 roughish; tlowcrs in small roundish clusters, appearing iiefore the leaves; 

 nut ovale, covered with warty scales. — River swamps iu the lower districts. 

 Feb. - March. — A tree 20^ - 30° high. Lea\ es V-l!/ long. 



3. CELTIS, Tourn. Nettle Tree. 



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

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

 bose. Embryo curved around scanty gelatinous albumen. Cotyledons 

 wrinkled. — Trees. Leaves petioled, commonly obliiiue at the base. Flowers 

 axillary, .solitary, or few in a cluster, greenish. 



1. C. OCCidentalis, L. Young leaves and hranchlets silky ; leaves (2' 

 long) ovate, acunn'uale, sharply serrate, aliruptly 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. integkifolia. (C. integrifolia, A'^f//^.) 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, A))alachi- 

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

 and leaves 2-ranked. — Var. puMir.A. (C. pumila, P^r.sA.) Shrubhy ; leaves 

 (r-l:\' long), ovate, acute, serrate, ohtuse at the base, pale beneath, very 

 rougli above ; drupe glaucous. — Shady Avoods, Florida to North Carolina. 

 March- April. — Stem 5°- 10° liigh. 



4. TREMA, Lour. 



Chiefly like Celtis, but with fleshy all)umen, and thick narrow incurved 

 cotyledons. — Trees or shrubs. 



1. T. micrantha, Benth. & Hook. Shrub very leafy (10°- 1.5° high), 

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

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

 (Celti.s pallida. Ton-.} — Shell-mounds in Lastero Hay, South Florida {(Jarher). 



