422 
The Ohio Naturalist. 
[Vol. XV, No. 3, 
5. Geum strictum Ait. Yellow Avens. Stems hairy, lp2-224 
ft. high. Stem leaves pinnate, much incised, leaflets 3-5, rhombic- 
ovate; stipules large, foliaceous; flowers yellow; petals longer than 
the sepals, orbicular in shape. Knox, Ashtabula, Summit, Wayne, 
Lake, Stark, Lorain, Cuyahoga, Fairfield, Geauga, Preble. 
6. Geum vernum (Raf.) T. & G. Spring Avens. Stem 
erect, glabrous, or with a few scattered hairs; basal leaves orbicular 
or cordate, 3-5 lobed, sometimes pinnate; stem leaves narrowly 
pinnate or pinnatified; flowers yellow, head of fruit long stalked. 
Hancock, Montgomery, Clark, Warren, Lucas, Erie, Lorain, 
Delaware, Greene, Hamilton, Pickaway, Crawford, Hardin, 
Clermont, Preble, Huron, Licking, Franklin, Pike, Auglaize, 
Washington, Madison, Morrow. 
2. Dasiphora. 
Stems shrubby, erect, with dry sheathing stipules and pinnate 
leaves; flowers solitary or in small cymes; petals and sepals 5; 
stamens about 25 in 5 festoons on the thickened margin of the 
disk; achenes numerous, densely covered with hairs. 
1. Dasiphora fruticosa (L.) Rydb. Shrubby Cinquefoil. 
Shrubs b^-2/d ft. high, with shaggy bark; leaflets 5-7, oblong, 
entire, with long, silky hairs; flowers yellow, |-| in. broad. 
Erie, Champaign, Wyandot, Clarke, Montgomery, Summit, 
Portage, Stark, Logan. 
3. Potentilla. Cinquefoil, Five-finger. 
Herbs or shrubs with digitate or pinnate, compound leaves; 
flowers cymose or solitary, yellow in ours; calyx 5-lobed (rarely 
4-lobed), 5-bracteolate (rarely 4-bracteolate), persistent; petals 5, 
rarely 4); carpels inserted on a dry, usually pubescent receptacle. 
1. Flowers cymose; erect or ascending herbs. 2. 
1. Flowers solitary, axillary; prostrate or creeping herbs. 5. 
2. Leaves pinnately 3-11-foliate. P. paradoxa. (1). 
2. Leaves palmately 3-7-foliate. 3. 
3. Leaflets 3. P. monspeliensis. (4). 
3. Leaflets 5-7. 4. 
4. Leaflets crenate, green beneath; lower stipules leaf-like; petals dark 
yellow. P. recta. (3). 
4. Leaflets laciniate or incised, white-pubescent beneath; stipules not 
leaflike. P. argentea. (2). 
5. Flowers 4-parted, upper leaves 3-parted. P. replans. (7). 
5. Flowers 5-parted; leaves usually all 5-foliate. 6. 
6. Stems long, ascending at first, 5-14 in. high, later decumbent; pubescence 
of petioles, stems and peduncles spreading. P. canadensis. (5). 
6. Plants low, not more than 4 in. high with very slender runners; 
pubescence of petioles, stems and peduncles oppressed. P. puntila. (6). 
1. Potentilla paradoxa Nutt. Bushy Cinquefoil. Plants 
stout, bushy; stems decumbent or erect; leaves pinnately 5-11- 
foliate; leaflets obovate or oval, deeply incised; flowers borne 
in leafv cvmes. Erie Countv. 
