302 ORDER XLIV. ROSACEA. 



Genus IX.— SANGUISOR'BA. L. 4—1. 



(From savguis, blood, and sorbio, to absorb, from the supposed vulnerary qualities 

 of some of the species.) 



Flowers perfect or polygamous. Calyx 4-parted, quadran- 

 gular. Petals none. Stamens 4. Carpels 1 — 2. Stigma 

 more or less fimbriate. Fruit an achenia. 



1. S. Canadensis, (L.) Stem glabrous. Flowers in spikes ; stamens 

 much longer than the calyx. Leaves unequally pinnate; stipules foil- 

 aceous ; leaflets ovate or oblong, serrate, sometimes cordate, 1-achenium. 

 — If. Mountains. • Burnet-saxifrage. 



Genus X.— AGRIMO'NIA. Tourn. 11—12. 



(From the Greek argos, white, supposed to be in allusion to its removing the cata- 

 ract of the eye, that being white.) 



Calyx 5-cleft, connivent, turbinate, armed with hooked bris- 

 tles. Petals 5. Stamens 11 — 15, inserted into the throat of 

 the calyx. Carpels 2, included within the calyx. Seeds sus- 

 pended. Perennial herbs, with pinnate leaves. Flowers in ra- 

 cemes, yellow. 



1. A. Eupato'ria, (L.) Stem and petioles hirsute. Leaves pinnate, 

 the terminal leaflet petioled ; leaflets 5 — 7, oblong, obovate, coarsely 

 toothed, pubescent, generally with several minute leaflets intermingled. 

 Flowers in virgate spikes, with the calyx sulcate toward the base. 

 Petals much longer than the calyx. Fruit hispid. — Yellow. If. July. 

 Common. 2 — 4 feet. Agrimony. 



2. A. parviflo'ra, (Ait.) Stem and petioles hirsute, with brownish 

 hairs. Leaves dotted on the under surface, pinnate ; leaflets 11 — 19, 

 crowded, with minute ones intermixed, toothed, lanceolate, acute, sca- 

 brous above, pubescent beneath; stipules incised. Flowers small, in 

 virgate racemes. Petals small. — Yellow. If. July — Ai g. Upper 

 districts of Car. and Geo. 4 — 5 feet. Dotted Agrimony. 



3. A. inci'sa, (T. & G.) Stem and petioles pubescent, intermixed 

 with hirsute hairs. Leaves pinnate ; leaflets 3 — 5 pairs, intermixed 

 with smaller ones, incised, oblong, with unequal teeth on each side, al- 

 most glabrous above, hairy beneath. Flowers in virgate racemes, small, 

 on short pedicels; teeth of the calyx very short. — Yellow. %. July 

 —Aug. Middle Geo. 1—2 feet. 



AgrimoniaEnpatoria is said to be one of the Indian medicines for the cure of fevers. 

 Its properties seem to be principally astringent, and on this account it is used in affec- 

 tions of the mucous membrane of the alimentary canal. I \. has also been employed in 

 jaundice. 



Genus XL— POTENTIL'LA. L. 11—12. 

 (From potens, powerful, in allusion to the medical qualities of some of the species.) 



Calyx 4 — 5-cleft, with 4 or 5 exterior segments,. Petals 4 

 — 5, obcordate. Stamens numerous, inserted into the base of 

 the calyx. Carpels numerous, collected into a head. Plants 

 with compound leaves. 



