URTICACK.i:. (NKTTLE FAMILY.) 463 



(1-2^' long); calyx-lobes obovate; fruit downy on the face at least when 

 young. — Va. to S. Ind., S. Mo., and scnitlnvard. Marcli. A small tree. 



2. PLANER A, (imelin. rLANKU-TUEE. 



P'lowers moncEciously polygamous. Calyx 4 - 5-cleft. Stamons 4-5. Ovary 

 ovoid, l-t'clled, 1-ovuled, crowned with 2 spreading styles wliiili are stigma- 

 tose down the inner side, in fruit becoming coriaceous and nut-like, not winged. 

 Albumen none; embryo straight. — Trees with small leaves, like those of 

 Elms, the flowers appearing with them, in small axillary clusters. (Named 

 for ./. ./. Planer, a (lerman botanist.) 



1. P. aquatica, Gmel. Nearly glabrous; leaves ovate-oblong, small; 

 fruit stalked in the calyx, besot with irregular rough projections. — Wet 

 banks, N. C. to Ky., S. 111., and southward. Ai)ril. A rather small tree. 



3. CELTIS, Tourn. Nettle-trek. Hackbekry. 



Flowers monoeciously polygamous. Calyx 5 - 6-parted, pcrsi.steut. Stamens 

 5-6. Ovary 1-celled, witli a single suspended ovule; stigmas 2, long and 

 pointed, recurved. Fruit a globular drupe. Embryo curved, nearly enclosing 

 a little gelatinous albumen ; cotyledons folded and crumpled. — Leaves pointed, 

 petioled, inequilateral. JStipules caducous. Flowers greenish, axillary, the 

 fertile solitary or in pairs, peduncled, appearing with the leaves, the lower 

 usually staminate only, fascicled or racemose along the base of the branches 

 of the season. (A name of Pliny's for an African species of Lotus.) 



1. C. OCCideil,talis, L. (Sugarberry. Hackberry.) Leaves reticu- 

 lated, ovate, cordate-ovate and ovate-lanceolate, taper-pointed, usually conspic- 

 uously and sharply so, more or less oblicpie at base, sharply serrate, sometimes 

 sparingly so or only toward the apex, scabrous but mostly glabrous above, 

 usually soft-pubescent beneath, at least when young ; fruit reddish or yellow- 

 ish, turning dark purple at maturity, its peduncle once or twice the length of 

 tlie petiole. — Woods and river-banks, N. Eng. to Minn., and southward. 

 April, May. — A small or sometimes large tree, with the aspect of an Elm, 

 bearing sweet and edible fruits a« large as bird-cherries, at first obovate, ripe 

 in autumn ; the flesh thin. Very variable in the form, texture, etc., of the 

 leaves. — Var. p6mila, Gray. Low and straggling (4-10° high) ; leaves thin 

 when mature, and smooth, slightli/ acuminate. River-banks, on rocks, from 

 Maryland south-ward. 



2. C. MiSSissippi^nsis, Bosc. Leaves entire (rarely few-toothed), vert/ 

 lonr/ tape7--point(d, Tonnded at l»ase, mostly oblique, tliin, and smooth; fruit 

 small. — 111. to Tenn., and southward. A sniall tree with warty bark. 



4. CANNABIS, T<.uin. Hemp. 



Flowers dirccious ; tlie sterile in axillnry compound racemes or panicles, with 

 5 sepals and 5 droo])ing stamens. Fei'tile flowers sjiiked-clustered. 1-bracted; 

 the calyx of a single sepal enlarging at tlie l)ase and ft)lded round the ovary. 

 Achene crustaceous. Embryo simply curvoil. — A tall roughish annual, with 

 digitate leaves of 5-7 linear-lanceolate coarsely tootjieil leaflets, the upper 

 alternate ; the inner bark of very tough fibres. (The ancient Greek name, of 

 obscure etymology.) 



C. satIva, L. (IIemi'.) Stem 4-8° high; leaves 4-8' broad; flowers 

 green. — Waste and cultivated ground. (Adv. from Eu.) 



