xMxcLURA. CXXX. URTICACEiE. 5W 



Section I. M()RE.13. 



Shrubs or trees with a milky juice. Fruit fleshy, composed of the 



fleshy calyx or receptacle. 



1. MORUS. 



Celtic mor, black ; the color of the fruit of some of the speclcH. 



Flowers c?, rarely J' V — cT in loose spikes; calyx 4-parted. 9 in 

 dense spikes; calyx 4-parted; styles 2; achenium compressed, en- 

 closed within the baccate calyx; spike constituting a compound 

 terry. — Trees with alternate^ gmeraUy lobed leaves. Fls. inconspicuous. 



1. M. RUBRA. Red Mnlbcrni. 



Lis. scabroii-s, pubescent beneath, rounded or subcordate at base, equally 

 serrate, acuminate, either ovate or3-lobod; fertile spikci cyUndric ; Jr. dark red. — 

 This tree varies greatly in height according to its situation. In New England, 

 where it is not very common, it is but a shrub 15— 20t high. In the Middle 

 and Western States," it attains the elevation of 56—001", with a diameter of 2f. 

 Trunk covered witli a grayish bark, much broken and furrowed. Wood fine- 

 grained, strong and durable. Leaves 4—6' long, § as wide, entire or divided 

 into lobes, thick, dark green. Flowers small. Berries of a deep red color, 

 compounded of a great luimber of small ones, of an agreeable acid flavor. 

 May. 



2. M. ALBA, imtc Mulberry.— Lvs. nearly glabrous, cordate and oblique at 

 base, unequally serrate, either undivided or lobed ; />. whitish. — Native of Chi- 

 na. Cultivated lor the sake of its leaves as the food of silk worms. A tree of 

 humble growth. Leaves 2—4' long, § as wide, acute, petiolate. Flowers green, 

 in smallj roundish spikes or heads. Fruit of a yellowi.sh-white, insipid. 



/?. multicautis. ( Ckinese Mulberry.) Lvs. large (4—7' long, f as broad).— Shrub. 



3. M. NIGRA. Black Mulberry.— Lvs. scabrous, cordate, ovate or lobed, obtuse, 

 unequally serrate ; fertile spikes oval. — Native of Persia, cultivated for ornament 

 and shade, in this as well as in many other countries. Fruit dark red or black- 

 ish, of an aromatic, acid flavor. 



2. BROUSSONETIA. L'Her. 



In honor of P. N. V. Broussonet, a distinguished French naturalist. 



Flowers cf 9 . — S" Ament cylindric ; cal. 4-parted. 9 Ament glo 

 bose ; receptacle cylindric-clavate, compound ; cal. 3-4-toothed, tubu- 

 lar; ovaries becoming fleshy, clavate, prominent; sty. lateral; seed 1, 

 covered by the calyx. — Trees., from Japan. 



B. PAPYRiFERA. Paper Mulberry.- Lvs. of the younger tree, roundish- 

 ovate, acuminate, mostly undivided, "of the adult tree 3-lobed ; /r. hispid. — A 

 fine, hardy tree, occasionally cultivated. It is a low, bushy headed tree, with 

 large, light green, downy leaves, and dark red fruit a little larger than peas, 

 with long, purple hairs. 



3. MACLURA. Nutt. 



Dedicated to William Maclure, Esq., of the U. S., a distinguished geologist. 



Flowers J^9. — c? in aments. Calyx 0; ova. numerous, coalescing 

 into a compound, globose fruit, of 1 -seeded, compressed, angular, cu- 

 neiform carpels ; sty. 1, filiform, villous. — A lactescent tree, icith decid- 

 uous, alternate., entire.^ ex-stipulate leaves., and axillary spines. 



M. AURANTiACA. Nutt. Osa<xe Orange. 



A beautiful tree, native on the banks of the Arkansas, &c. Leaves 4—5' 

 by U— 2i', glabrous and shining above, strongly veined and paler beneath, on 

 short petioles, ovate or ovate-oblong, margin obscurely denticulate, ape.x suba- 

 enminate, rather coriaceous. The fruit is about the size of an orange, golden- 

 yellow when ripe, suspended by an axillary peduncle amid the dark glossy 



