5. S. Arúncus, L. (Goat's-Beard.) Smooth, tall; leaflets thin, lanceolate-oblong, or the terminal ones ovate-lanceolate, taper-pointed, sharply cut and serrate.—Rich woods, N. Y. and Penn. to Ga. in the mountains, west to Iowa and Mo.
3. PHYSOCÁRPUS, Maxim. Nine-bark.
Carpels 1–5, inflated, 2-valved; ovules 2–4. Seeds roundish, with a smooth and shining crustaceous testa and copious albumen. Stamens 30–40. Otherwise as Spiræa.—Shrubs, with simple palmately-lobed leaves and umbel-like corymbs of white flowers. (Name from φῦσα, a bladder, and καρπός, fruit.)
1. P. opulifòlius, Maxim. Shrub 4–10° high, with long recurved branches, the old bark loose and separating in numerous thin layers; leaves roundish, somewhat 3-lobed and heart-shaped; the purplish membranaceous pods very conspicuous. (Spiræa opulifolia, L. Neillia opulifolia, Benth. & Hook.)—Rocky banks of streams, N. Eng. to Fla., west to Mo., and the Pacific northward. Often cultivated.
4. GILLÈNIA, Moench. Indian Physic.
Calyx narrow, somewhat constricted at the throat, 5-toothed; teeth erect. Petals 5, rather unequal, linear-lanceolate, inserted in the throat of the calyx, convolute in the bud. Stamens 10–20, included. Pods 5, included, at first lightly cohering with each other, 2–4-seeded. Seeds ascending, with a close coriaceous coat, and some albumen.—Perennial herbs, with almost sessile 3-foliolate leaves; the thin leaflets doubly serrate and incised. Flowers loosely paniculate-corymbed, pale rose-color or white. (Dedicated to an obscure German botanist or physician, A. Gille, or Gillenius.)
1. G. trifoliàta, Moench. (Bowman's Root.) Leaflets ovate-oblong, pointed, cut-serrate; stipules small, awl-shaped, entire.—Rich woods, N. Y. to N. J. and Ga., west to Mich., Ind., and Mo.
2. G. stipulàcea, Nutt. (American Ipecac.) Leaflets lanceolate, deeply incised; stipules large and leaf-like, doubly incised.—Western N. Y. and Penn. to S. Ind. and Kan., south to Ala. and La.
5. RÙBUS, Tourn. Bramble.
Calyx 5-parted, without bractlets. Petals 5, deciduous. Stamens numerous. Achenes usually many, collected on a spongy or succulent receptacle, becoming small drupes; styles nearly terminal.—Perennial herbs, or somewhat shrubby plants, with white (rarely reddish) flowers, and edible fruit. (The Roman name, kindred with ruber, red.)