HORACES. (MULBERRY FAMILY.) 437 



long as the involucre. Damp shaded sandy soil near the coast, Florida to 

 North Carolina. June- August. Stem ^ - 1 long. Leaves 6"- 9'' 

 long, about the length of the slender petiole. 



5. BCEHMERIA, Jacq. FALSE NETTLE. 



Flowers monrecious or dioecious, in spiked clusters. Calyx of the sterile 

 flowers 4 - 5-cleft. Stamens 4-5. Calyx of the fertile flowers tubular, 4 - 5- 

 toothed or entire. Stigma subulate, hairy. Achenium elliptical, enclosed in 

 the persistent calyx. Rough herbs with alternate or opposite petioled 

 leaves. 



1. B. cylindrica, Willd. Pubescent and rough with straight and hooked 

 hairs ; leaves opposite ami alternate, ovate and ovate-lanceolate, acuminate, 

 serrate, rounded and 3-nerved at the base, on long or short petioles; spikes 

 axillary, mostly leafy at the summit, the fertile ones compactly flowered, 

 short; the sterile interrupted, and sometimes longer than the leaves. 

 Swampy thickets. July -Sept. 2/ Stem l-3 high, mostly simple. 

 Leaves 2' -5' long. 



ORDER 123. CANNABINACE^. (HEMP FAMILY.) 



Erect or twining herbs, with opposite incised or lobed and stipu- 

 late leaves, and dioecious flowers. Sterile flowers racemose or panicled. 

 Calyx 5-sepalous. Stamens 5, opposite the sepals, not inflexed in the 

 bud. Fertile flowers in bracted spikes. Calyx 1-leaved, embracing 

 the 1-celled ovary. Ovule solitary, erect. Stigmas 2. subulate, pu- 

 bescent. Fruit indehiscent. Albumen none. Embryo coiled or 

 curved. 



1. HUMULUS, L. HOP. 



Sterile flowers panicled. Fertile flowers in short axillary ami solitary 

 spikes. Bracts leafy, imbricated, 2-flowered, forming in fruit a mem- 

 branaceous cone. Calyx enlarged in fruit. Embryo spirally coiled. A 

 rough perennial twining herb, with cordate 3 - 5-lobed leaves, and greenish 

 yellow flowers. 



1. H. Lupulus, L. Low grounds along the mountains. Georgia, and 

 northward. June -July. Stem 6 -10 high. Leaves petioled, serrate. 

 Achenium covered with resinous yellowish odorous grains. 



ORDER 124. MORACEJE. (MULBERRY FAMILY.) 



Trees or shrubs, with milky juice, alternate leaves, with large decid- 

 uous stipules, and monoecious or dioecious flowers, crowded in spikes 

 or heads, or enclosed in the fleshy receptacle. Calyx of the sterile 

 flowers 3 - 4-lpbed, Stamens 3 - 4, inserted on the base of the calyx. 



