Order CXV Urticaceae Nettleworts Continued 1707

Order CXV Urticaceae Nettleworts Continued 1708 Calyx of 3 or 4 equal sepals; stamens 3 or 4. Order CXV Urticaceae Nettleworts Continued 1709 Calyx of 3 oblong, unequal sepals; stamens rudiments 3, cucullate opposite the sepals; achenium roughened, opaque, ovate, erect, nearly naked. - Order CXV Urticaceae Nettleworts Continued 1710 Smooth, stingless, with opposite lvs., united stipules and dense, axillary clusters, both kinds mixed.

P. pumila Gr. Ascending, weak, succulent; lvs. on long petioles, rhombic-ovate, crenate-serrate, membranous and glabrous, 3-veined; fls. in short clusters;Order CXV Urticaceae Nettleworts Continued 1711 sepals slightly unequal. - Order CXV Urticaceae Nettleworts Continued 1712 In waste places, about buildings and in woods, U. S. and Can. St. fleshy, semi-transparent when growing in shades, smooth and shining, 3 to 18' long, simple or branched. Lvs. pale green, 1 to 2' by 8 to 16", petioles of about the same length. Sep. much shorter than the greenish, mottled achenium, one of them a little longer than the other two. Jl. - Sept. (Urtica, L. Adice, Raf.)

4. BŒHME'RIA, Jacq. False Nettle. (Named for G. F. Bœhmer, a German botanist.) Flowers 8 or _ . Calyx 4-parted, with lan-

Order CXV Urticaceae Nettleworts Continued 1713Order CXV Urticaceae Nettleworts Continued 1714Order CXV Urticaceae Nettleworts Continued 1715 ceolate, acute segments; stamens 4; Order CXV Urticaceae Nettleworts Continued 1716 calyx tubular, truncate or 4-toothed, persistent and closely investing the ovate, pointed achenium. - Herbs or shrubs, stingless. Lvs. opposite or alternate. Fls. clustered.

1 B. cylindrica Willd. Herbaceous, dioecious, smoothish; lvs. opposite, ovate, acuminate, dentate, on long petioles; sterile spikes interrupted, fertile cylindric. - A coarse, nettle-like plant, in swamps and bottoms, Mid. and W. States. St slender, obtusely 4-angled, channeled on each side, 2 to 3f high. Lvs. 3-veined, 3 to 5' long, half as wide, petioles 2 to 3', the upper sometimes not quite opposite. Fls. minute, the fertile spikes 1 to 2' in length, the barren spikes longer and more slender. Jl., Aug. (Urtica capitata L ?)

2 B. lateriflora Muhl. Whole plant rough-pubescent, monoecious; lvs. all alternate, ovate-lanceolate, long-acuminate, dentate, rounded and subpeltate at base, on short petioles; upper spikes long and sterile, lower short, dense, fertile. - Borders of ponds. S. W. States. St. strict, 2 to 3f high, very rough. Lvs. 3 to 5' long, a fourth as wide, thick, on petioles 4 to 7" long. Fertile spikes as long as the petioles, sterile nearly as long as the leaves.

5. PARIETA'RIA, Tourn. Pellitory. (Lat. paries, a wall; some of the species prefer to grow on old walls.) Flowers monoecio-polyga-mous, in clusters, surrounded by a many-bracted involucre.Order CXV Urticaceae Nettleworts Continued 1717 Calyx 4-sepaled; stamens 4, at first incurved, elastically expanding. Order CXV Urticaceae Nettleworts Continued 1718 Calyx tubular-campamilate, 4-lobed, inclosing the ovary; stigma tufted; ache-nium polished, inclosed within the persistent calyx. - Herbs weed-like, with usually alternate lvs. Clusters of green fls., axillary.

1 P. Pennsylvanica Muhl. Lvs. oblong-lanceolate, veiny, tapering to an obtuse point, entire, punctate with opaque dots; invol. longer than the flowers. -Order CXV Urticaceae Nettleworts Continued 1719 A rough, pubescent herb, found in damp, rocky places, Vt. to Wis. and Ga. Stem erect, simple or sparingly branched, 6 - 12' high. Leaves alternate, entire, hairy and rough, about 1/2' wide and 3 or 4 times as long, petiolate, and ending with an obtuse acumination. Segments of the involucre about 3, lance-linear. Flowers dense, greenish and reddish white. May, June.

2 P. Floridana Nutt. Lvs. roundish-ovate, obtuse, as long as the petiole, opaquely punctate; fls. as long as the involucre. -Order CXV Urticaceae Nettleworts Continued 1720 Damp, sandy soils, Ga. and Fla. St. decumbent at base, branches erect, 10 to 12' high. Lvs. small, 1' long, including the filiform petiole, 3 to 5" wide. Bracts linear. May - Oct.

6. HU'MULUS, L. Hop. (Lat. humus, moist earth; the hop grows only in rich soils.) FlowersOrder CXV Urticaceae Nettleworts Continued 1721Order CXV Urticaceae Nettleworts Continued 1722 . - Order CXV Urticaceae Nettleworts Continued 1723 Calyx 5-sepalcd; stamens 5; anthers with 2 pores at the summit. Order CXV Urticaceae Nettleworts Continued 1724 Bracts imbricate, large, entire, concave, persistent, 1-flowered, forming an oblong anient; calyx of 1 sepal; membranous, entire, persistent; styles 2; achenium invested by the thin calyx; embryo coiled. - Order CXV Urticaceae Nettleworts Continued 1725 Twining with the sun. Lvs. opposite. Fls. in axillary panicles and strobile-like aments.

H. lupulus L. The hop-vino is found wild in hedges, etc., throughout this country, and is, as every one knows, extensively cultivated for the sake of its ament-like fruit. It has 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 long stalks. Flowers of the barren plants innumerable, panicled, greenish; those of the fertile, in aments with largo scales. Cal. and scales in fruit covered with reddish, resinous atoms (lupulin) in which the virtue resides. Jl.

7. CAN'NABIS, Tourn. Hemp. FlowersOrder CXV Urticaceae Nettleworts Continued 1726Order CXV Urticaceae Nettleworts Continued 1727 . - Order CXV Urticaceae Nettleworts Continued 1728 Calyx 5-parted; stamens 5. Order CXV Urticaceae Nettleworts Continued 1729 Calyx entire, oblong-acuminate, opening longitudinally at the side; styles 2; caryopsis 2-valved, inclosed within the persistent calyx; embryo curved. Order CXV Urticaceae Nettleworts Continued 1730 Lvs. opposite, digitate. Fls. axillary, Order CXV Urticaceae Nettleworts Continued 1731 in cymous panicles, Order CXV Urticaceae Nettleworts Continued 1732 in sessile spikes.

C. sativa L. Lvs. palmately 5 to 7-foliatc. - The hemp springs up spontaneously in our hedges and waste grounds. It is a tall, erect plant, with handsome petiolate leaves. Lfts. lanceolate, serrate, 3 to 5' long, 1/5 as wide, the middle one largest. Fls. small, green, solitary and axillary in the barren plants, spiked in the fertile ones. It is cultivated in Ky., Tenn., etc, as one of the staples. Jn. § India.