844 



UKTICACKAE (NETTLE FAMILY) 



6SS. Q. mnrilandica. 



cised or sinuate-pi nnati fid (then mostly 

 bristle-pointed). FIG. 687. 



20. Q. marilandica Muench. (BLACK 

 JACK or BARREN O.) Leaves broadly wedge- 

 shaped, but sometimes rounded or obscurely 

 cordate at the base, widely dilated and 

 somewhat 3 (rarely 

 5)-lobed at the 

 summit, occasionally 

 with one or two 

 lateral conspicuously 

 bristle-tipped lobes 

 or teeth, rusty-pubes- 

 cent beneath, shin- 

 ing above, large, 

 1-2.5 dm. long. (Q. 

 nigra Man. ed. 6, 

 not L.) Dry sandy 



barrens, or heavy clay soil, L. I. to s. Minn., e. Neb., 

 and southw. A small tree of little value. FIG. 688. 



21. Q. imbricaria Michx. (LAUREL or SHINGLE ().) 

 Leaves lanceolate or lance-oblong, 

 thickish, smooth and shining above, 

 downy beneath, the down usually 

 persistent; cup between saucer- 

 shaped and top-shaped. Rich wood- 

 lands, Pa. to Ga., w. to s. Wise., e. 



Neb., and Ark. ; locally, e. Mass. (Kennedy). Tree 8-27 m. 

 high. FIG. 689. 



22. Q. phSllos L. ( WILLOW O.) Leaves linear-lanceo- 

 late, narrowed to both ends, soon glabrous, light green 

 (about 1 dm. long) ; cup saucer-shaped. Bottom-lands or 

 rich sandy uplands, Staten I., N. Y. to Fla., w. to Ky., 

 Mo., and Tex. FIG. 690. Var. LAURIFOLIA (Michx.) 



Q. imbricaria. 



Chapm. (LAUREL O.) Leaves oblong, usually larger. (Q. 

 laurifolia Michx.) N. J. 



to Fla. and La. 



Mo. q. phcllos. 



URTICACEAE (NETTLE FAMILY) 



Plants with stipules, and monoecious or dioecious or rarely (in the Elm Tribe) 

 perfect flowers, furnished with a regular calyx free from the I (rarely ty-wllcd 

 ovary ichich forms a l-seeded fruit; the embryo in the albumen when thrrc is 

 any, its radicle pointing upward; stamens as many as the lobes of the calyx and 

 opposite them, or sometimes fewer. Cotyledons usually broad. Stipules often de- 

 ciduous. A large family (far the greater part tropical). 



Tribe I. tJLMEAE. Flowers mostly polygamous, upon the last year's brandies. Anthers erect 

 in the bud. extrorse. Styles or stigmas 2. Seed suspended. Embryo Straight. - Trees, with 

 alternate serrate [(innately veined leaves and fuiraeioiis stipules. 

 1. Ulmus. Ovary l-'J-ovuled. Fruit winded all around. 

 '.'. Planera Flowers appearing with the leaves. Ovule one. Fruit wingless, nut-like. 



Tribe II. CELTfDEAE. As in Tribe I., but the monoecious-polygamous (lowers upon branches 

 of the same year. A nthers introrse. Fruit a drupe. F.mhryo curved. 



.".. CeltiS. <>\ar\ 1 ovuled. Flowers appearing with the h-av e-. Leaves 8-nerf0dT at 1 



Tribe III. CANNABfNEAE. Flowers dioecious ; the sterile racemod or panicled ; the fertile in 

 clusters or catkins, the calyx of one s,-pal embracing the ovary. Filaments short, erect in the 

 bud. Stigmas 2, elongated. Ovary 1-oelled, with a pendulous ovule, forming a small glandular 



