moracetE. 317 



Fertile Fl. Perianth oblong, acuminate, convolute, the base 

 ventricose and including the ovary. Stigmas 2, long, subulate. 

 Nut 2-valved. 



C. sativa Linn. 



Fields and waste places. Can. to Virg. June. (!)• — Stem 5 — 10 feet high, 

 angular and sulcate, often branched. Leaves petiolate, digitate ; leafets 5—7, 

 lanceolate, serrate. Sterile flowers in loose axillary clusters, which form a large 

 panicle. Fertile flou^ers axillary, mostly in pairs, greenish. Everywhere culti- 

 vated for the sake of its tough fibre. Introduced. Common Hemp. 



2. HUMULUS. Lmn.—Uop. 

 (Fromithe Latin humus, moist earth ; because it prefers moist soils.) 



Dioecious. Sterile Fl. Perianth 5-parted. Stamens 5. 

 Fertile Fl. in aments ; the scales l^rge, membranous, imbri- 

 cate in several rows, 2-flowered. Stigmas 2, long, spreading. 

 Achenia invested with the enlarged perianth and forming a 

 membranaceous strobile. 



H. Lupidus Linn. 



Hedges, &;c. Throughout the U. S. Aug. Ti. — Stem twining, scabrous. 

 Leaves opposite, rough, cordate at base, 3 — 5-lobed ; the lobes acuminate and 

 serrate. Flowers greenish, the sterile in oblong panicles terminating the axillary 

 branches, the fertile in oblong aments. It is used in medicine as an anodyne. 

 Big. Med. Bot. iii. 163. ♦ Common Hop. 



Order CXIII. MORACE^E.— Mulberries. 



Flowers monoecious, in heads, spikes or aments. Sterile Fl. 

 Perianth none, or 3^ — 4-parted, imbricated. Stamens 3 — 4. 

 Fertile Fl. Perianth 3 — 5-parted, sometimes in two rows. 

 Ovary 1- rarely 2-celled ; style terminal, bifid. Fruit small 

 nuts or utricles, 1 -seeded, enclosed by a succulent receptacle or 

 collected in a fleshy head formed by the succulent perianth. 

 Seeds albuminous. — Trees or shrubs, with a milky juice. Leaves 

 of various forms. Flowers very inconspicuous. 



MORUS. jLmw.— Mulberry. 

 (From the Greek jxopea, the mulberry.) 



Flowers in spikes, usually monoecious sometimes dioecious. 

 Sterile Fl. in loose spikes. Perianth 4--parted. Stamens 4. 

 Fertile Fl. in dense spikes. Perianth 4-parted, becoming 

 baccate. Styles 2. Nut ovate, compressed, covered by the 

 succulent perianth. 



1. M. rubra Linn.: leaves cordate-ovate or palmately lobed, acuminate, 

 equally serrate, scabrous above, pubescent beneath ; flowers mostly dioe- 

 cious ; fruit dark-purple. 



