ORTICACES. 356 



H. LU'PULUS. 



The hop vine is found wild in hedges, &c., throughout tliis country, and is, 

 as every one knows, extensively cultivated for the sake of its fertile anients 

 which are chiefly used as a preservative in beer. It lias a long, annual stem 

 of rapid growth, always twining with the sun. rough backwards with reflexed 

 prickles. Leaves very rough, generally 3-lobed, deeply cordate at base, on 

 loner stalks. Flowers of the barren plants extremely numerous, panicled, 

 greenish ; those of tiie fertile, in aments with large scales. In the cultivation 

 of the hop it has been found projkable to plant a few layers of tiie barren 

 vines among the fertile ones, as the produce is thus increased in weight through 

 the fertilization of the seeds. Aug. Coinmun Hop. 



5. BCEHME'RIA. 

 Flowers monoecious or dioecious. Slerile. — Calyx 4-par(ed, 

 with lanceolate, acute segments; s(am(?iis 4. Fcrlile. — Ach- 

 lamjdeotis; ovary and style 1, in the axil of a bract ; achenium 

 compressed, margined. 



Named for G. F. Boehmer, a German botanist. Herbs with a watery juice. 

 Flowers clustered. 



B. CYLI'NDRICA. 



Herbaceous ; leaves opposite, ovate-lanceolate, acuminate, dentate, smooth ; 

 _^o?o(;?-6' dioBfious ; sterile spikes glomerate, interrupted, /fi?-<(7c cylindric. A 

 coarse, netlle-lijce plant, in swamps. Stem slender, obtusely 4-angled. chan- 

 neled on each side, 2 — 3 feet high. Leaves 3-nerved, 3 — 5 inches long. ^ as 

 wide, on long petioles. Flowers minute, the fertile ones in axillary, cylindric 

 spikes, 1 — 2 inches in length, the barren spikes rather longer and more 

 Blender. July. Aug. False JVettle. 



6. MORUS. 

 Flowers moncecious. rarely dioecious. Slerile in loose 

 spikes ; calyx 4-parted. Ftrlik in dense spii<es; calyx 4-part- 

 ed ; siyles 2; aclienium compressed, enclosed within the 

 baccate caljx. 



Celtic, mor. black ; the color of the fruit of some of the species. Treeg 

 with a milky juice. Lvs alternate. Fls. in small, axillary, pedunculate spikes. 



1. M. RUBRA. 



Leaves cordate, ovate, acuminate, or 3-lobed, equally serrate, scabrous, pu- 

 bescent beneath; fer Li' c spikes cylindric. This tree varies greatly in highl 

 according to its situation. In N. Enijland, where itiiS not very common, it is 

 but a shrub 15 — 20 feet high. In the Middle and Western States it attains 

 the elevation of .^lO — 60 feet, with a diameter of 2 feet. Trunk covered with 

 a grayish bark, much broken and furrowed. Wood fine-grained, strong and 

 durable. Leaves 4 — G inclies long, |- as wide, entire or divided into lobes, 

 thick, dark green. Fls. small. Berries of a deep red color, compounded of a 

 great number of small ones, of an agreeable, acid taste. May. Red Malherry. 



2. M. ALBA. — Leaves cordate, oblique at basp,entireor lobed, unequally 

 serrate, smoothish. Native of China. Cultivated for the sake of its leaves 

 as the food of silk worms. A tree of humble growth. Leaves 2 — 4 inches 

 long, ^- as wide, acute, petiolate. Flowers green, in small roundish spikes or 

 heads. Fruit of a yellowish white, insipid. White Mulberry. 



p. muUicaulis ; leaves very large (4 — 7 inches long, § as broad). Shrub. 



Chinese Mulberry. 



