134 ROSACE.^. (ROSE FAMILY.) 



3. A. incisa, Torr. & Gray. Stem, petioles, and lower surface of the 

 leaves clothed with soft down and long hairs intermixed; leaflets 7-9, small 

 (]/ long), oblong or obovate, coarsely serrate, with smaller ones between ; sta- 

 mens 5. Dry open woods, in the lower districts, Georgia, aud westward. 

 August. Stem 2 high. Flowers small. 



8. POTERIUM, L. 



Calyx 4-parted, the tube 4-angled. Petals none. Stamens 4, the filaments 

 usually thickened upward. Style terminal, slender. Stigma pencil form. 

 Achenia 1-2, included in the 4-winged indurated calyx tube. Herbs, with 

 unequally pinnate leaves. Flowers in close heads or spikes. 



1. P. Canadense, Benth. & Hook. Smooth; leaflets numerous, stalked, 

 cordate-ovate or oblong, serrate ; spikes long peduncled, cylindrical, elongated 

 in fruit; stamens flattened. Wet meadows, along the mountains. Sept. 

 y. Stem 2 -4 high. Lowest leaves on long petioles. Flowers white. 



9. ALCHEMILLA, Tourn. 



Calyx 4-5-parted, and with as many alternate bracts; the tube obconical, 

 contracted at the throat. Petals none. Stamens 1 -4. Style lateral. Stigma 

 capitate. Achenia 1-4, included in the persistent calyx-tube. Small herbs, 

 with palmately divided leaves, and minute greenish flowers in corymbs or 

 clusters. 



1. A. arvensis, L. Annual, hairy; stem (l'-8'high) leafy; leaves 

 3-parted, the divisions wedge-shaped, 3 - 5-lobed ; flowers in axillary sessile 

 clusters ; fertile stamens 1-2. Waste places, North Carolina. Introduced. 

 Stem branching from the base. Leaves 4"- 6" long. 



10. GEUM, L. AVENS. 



Calyx campanulate, deeply 5-cleft, and usually with as many bracts at the 

 sinuses. Petals 5. Stamens and achenia numerous, the latter crowded on 

 the conical or cylindrical dry receptacle. Styles terminal, long, persistent, 

 jointed and hairy, or straight and smoothish. Seeds erect. Perennial herbs, 

 with pinnately divided leaves. Flowers yellow, white, or purple. 



1. G. vernum, Torr. & Gray. Stems ascending, hairy, 6' -12' high; 

 lowest leaves pinnate or round-cordate, the upper 3-5-foliate; flowers few and 

 small ; petals yellow, as long as the calyx ; head of achenia globose, raised on 

 a slender stipe ; receptacle glabrous. Woods and copses, Tennessee. March- 

 April. 



2. G. Virginianum, L. Stem stouter, hirsute; stem leaves 3-parted, 

 petals shorter than the calyx ; heads of fruit larger, on stouter peduncles ; 

 receptacle smooth ; otherwise like the next. Wet woods, North Carolina 

 (Ifijiunu). 



3. G. album, Gmelin. Smoothish or downy; stem slender, with spread^ 

 ing branches ; radical leaves pinnate, or the earliest ones nearly simple and 

 rounded ; stem-leaves 3-parted, lobed or toothed ; petals white, as loqg as the 



