120 
ROSACE2E. (ROSE FAMILY.) 
loiccr portion smooth and persistent , hooked at the end after the defin¬ 
ed and mostly hairy upper joint falls away: head of fruit sessile: 
calyx-lobes reflexed. 
1- Virginfanum, L. (White Avens.) Stem rather 
hairy below; root-leaves pinnate, lyrate, or simple and rounded; 
those of the stem 3 — 5-lobed or divided, softly pubescent; petals 
white, about the length of the calyx ; receptacle of the fruit hairy. Also 
G. album, IVilld. — Woods and meadows, very common. June- 
Au g- Leaves very variable. Flowers many, quite small. 
2. G, Iliacl’opliyHum, Willd. (Rough Yellow Avens.) 
Bristly-haired, stout; root-leaves lyrately and interruptedly pinnate, 
with the terminal leaflet very large and round-heart-shaped; lateral 
leaflets of the stem-leaves 2-4, minute, the terminal roundish, 3- 
cleft, the lobes wedge-form and rounded ; petals yellow , longer than 
the calyx ; receptacle of fruit nearly naked. —Around the base of the 
White Mountains, N. Hampshire. June. —Stems2°- 3° high, leafy. 
Flowers smaller than in No. 3. 
3. G. Strictum, Ait. (Tall Yellow Avens.) Somewhat 
airy , root-leaves interruptedly pinnate, the leaflets wedge-obovate; 
eaflets of the stem-leaves 3-5, rhombic-ovate or oblong , acute ; petals 
yellow, longer than the calyx; receptacle downy. — Moist meadows, 
common northward. July. - Stem 3-5 feet high, with rather large 
loosely pamcled flowers. 
§ 2. St^lipus, Raf. — Styles smooth : head of fruit conspicuously 
stalked . bractlets of the calyx none : otherwise as § 1 . 
v£riram, Torr. & Gr. (Western Early Avens.) 
Somewhat pubescent; stems ascending, few-leaved, slender; root- 
leaves roundish heart-shaped and 3-5-lobed, or some of them pin¬ 
nate, with the lobes cut; petals yellow, about the length of the calyx; 
receptacle smooth. — Thickets, Ohio and westward. April-June. 
Flowers small. Head of carpels soon protruded beyond the calyx on 
its slender stalk. 
§ 3. CaryophyllAta, Toum. — Style jointed and bent in the middle , 
- ^ U M ,er j°* nt plumose : flowers large. 
*. G. rivale, L. (Water or Purple Avens.) Stems near¬ 
ly simple, several-flowered, reversely hairy; root-leaves lyrate and 
interruptedly pinnate; those of the stem 1-2, and 3 -foliolate or 3- 
obed , petals inversely heart-shaped, contracted into a claw, purplish- 
orange , head of fruit stalked. — Bogs and wet meadows, especially 
nort ward. May. Stems 2° high; the blossoms nodding, but the 
feathery fruiting heads upright. Calyx brown-purple. 
§ . ^ieversia, Willd. — Style not jointed , wholly persistent and 
~ „ straight: head of fruit sessile : flowers large. 
• trlfloruna, Pursh. (Rock Avens.) Low, softly hairy; 
flowering stems nearly leafless; root-leaves interruptedly pinnate; the 
