150 ROSACEA, (rose family.) 



on a lonf,' naked peduncle. — Meadows and Prairies, Penn. to Michigan, Uli- 

 nois, and Kentucky. June. — I'lowers deep peaeh-blos.-iom color, handsome, 

 the petals and sejjals ot'tcu in fours ! The bruised t'oliage exhales the odor of 

 Sweet Bireh. 



§4. ARCNCUS, Serinrje. Perennial herbs, with dioecious whitish Jlowers, in 



inani/ slender spi/ciS disfwsed in a lomj comimind ixiiiide: leans thrice-pinnate: 



stipith'S obsolete: pod^ 3-5, several-seeded : pedicels reflered in fruit. 



6. S. Ariineus, L. (Goat's-Beakd.) Smooth, tall; leaflets thin, lancc- 



ohue-ohlong, or the terminal ones ovate-lanceolate, taper-j)ointed, sharply cut 



and serrate. — Rich woods, Catskill and Alleghany Mountains and westward. 



Kear Baltimore, /'. r. /^eroy. June. (Eu.) 



3. GILLENIA, Mueueh. 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 iirst 

 lightly cohering with each other, 2-4-sceded. Seeds ascending, with a close 

 coriaceous coat, and some albumen. — Perennial herbs, Avith almost sessile 3-fo- 

 liolate leaves; the thin leaflets doubly serrate aud incised. Flowers loosely 

 panieulatc-corymhed, pale rose-color or white. (I)etlicated to an obscure Ger- 

 man botanist or physician, A. Gille, or Gillenius.) 



1. G. trifoliata, Micneh. (Bow.man's Root.) Leaflets ovate-oblong, 

 pointed, cut-serrate; stipules small, awl-shaped, entire. — Rich woods, from W. 

 New York southward, and sparingly in the Western States. July. 



2. G, Stipulasea, Nutt. (American Ipecac.) Leaflets lanceolate, 

 deeply incised ; stipules large and leaf-like, doubly incised. — From W. Pcqq- 

 sylvania and New York to lUiuois and Kentucky. June. 



4. POTERIXJM, L. (including Saxguisorba.) Burnet. 



Calyx with a top-shaped tube, constricted at the throat, persistent ; the 4 

 broad petal-like spreading lobes imbricated in the bud, deciduous. Petals none. 

 Stamens 4-12 or more, with flaccid filaments and short anthers. Pistils 1 -.3 : 

 the slender terminal style tipped with a tufted or brush-like stigma. Achenium 

 (commonly solitary) enclosed in the 4-angled dry atul thiekish closed calyx- 

 tube. Seed suspended. — Chiefly perennial herbs, with unequally jiinnatc 

 leaves, stipules coherent with the petiole, and small, often polygamous or di- 

 oecious flowers crowded in a dense head or s])ike at the summit of a long and 

 naked peduncle, each bracteate and 2-hracteolate. (Name ttodj/jioi/, a drinkiuq- 

 cup, the foliage of Burnet having been used in the preparation of some medici- 

 nal drink.) 



1. P. Canadcnse. (Canadian BrnxET.) Stamens 4, long-exserted, 

 club-sha])ed, white, as is the whole of the elongated and cylindrical spike ; stem 

 3° - G° high, leaflets numerous, ovate or oblong-lanceolate, coarsely serrate, ob- 

 tuse, heart-shaped at the base, as if stipellate; stipules serrate. (Sanguisnrha 

 Canadensis, Z., and former edition.) — Bogs and wet meadows; ehietly iiortli- 

 Vv-:u'd. Aug. - Oct. 



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