316 ROSACEAE 
1. P. arguta, Pursh. (Fig. 7, pl. 66.) Tati CINQUEFOIL. Stems 
stout, erect, 1 to 4 ft. high, hairy. Leaves compound, of 7 to 11 leatlets, 
borders coarsely serrate, broad oval or rhomboid; stipules membraneous. 
Flowers in a rather close cluster, creamy-white, about 4 in. diameter. 
Dry places. Maine to southern New Jersey. June-July. 
2. P. argentea, L. (Fig. 4, pl. 65.) Simvery CrnqueEroIL., Small, 
tufted, stem branching, 4 to 12 in. long, half prostrate, silvery-white, 
as is also the under surface of the leaves. Leaflets 5, each deeply cut 
into about 5 narrow segments. Flowers in loose terminal clusters, yel- 
low, + to 2/3 in. diameter. In dry pastures, etc., in our area. May-Sept. 
3. P. intermedia, L. (Fig. 3, pl. 66.) Downy CinqueroiL. Stems 
leafy, much branched, 1 to 23 ft. long, partly prostrate, hairy. Leaves 
of 3 to 5 leaflets, which are oblong or pear-shaped, with coarsely serrate 
borders. Flowers numerous, in loose terminal clusters. Mass., New 
York and New Jersey. 
4, FP) recta, J: (Rig, <2; pl. (665) ROUGH-FRUITED CINQUEFOIL. 
Erect, hairy, stems 1 to 2 ft. high, branching mostly in 2s at the top. 
Leaflets narrow oblong or lance-shaped, 5, less often 7, spreading from 
a common center, borders coarsely serrate; stipules rather conspicuous, 
the lower ones Jeaf-like. Flowers in loose terminal cluster, each 1/3 to 
+ in. broad, In waste places, New York and southward. June-Sept. 
5. P. Robbinsiana, Oakes. (Vig. 7, pl. 64.) Ropprn’s CINQUEFOIL. 
(P. frigida, Gray.) Dwarf, 4 to 2 in. high, growing in dense tufts; plant 
silky. Leaves of 3 egg-shaped leaflets, coarsely toothed. Flowers small, 
generally solitary, the sepals and adjoining bracts equal. White Moun- 
tains, N. H. 
6. P. monspeliensis, L. (Fig. 1, pl. 66.) RoucnH CINQuEFoIL. (P. 
norvegica, L.). Stems 4 to 2 ft. high, rough-hairy. Leaflets 3; stipules 
leaf-like. Flowers in close leafy terminal clusters. Calyx as large as, 
sometimes larger, than the corolla, Petals falling quickly. Common in 
dry soil. June-Sept. 
7. P. paradoxa, Nutt. (Fig. 6, pl. 64.) Busny Cinquerom. Plant 
bushy, 1 to 3 ft. high, decumbent or erect, soft downy. Leaves pinnately 
compound with 6 to 11 leaflets, except the very upper ones which are 
trifoliate; stipules conspicuous, egg-shaped or oval. Flowers scattered, 
terminal to the branches or branchlets, yellow, } to 4 in. broad. New 
York, shores of Great Lakes and southward. June-Sept. 
8. P. pennsylvanica, L. (Fig. 8, pl. 64.) Coast CINQUEFOIL. ({P. 
littoralis, Rydberg.) Stems erect or prostrate, 4 to 2 ft. high, slightly 
hairy or smooth. Leaflets 5, sometimes 7, feather-form, incised to the 
mid-rib. Flowers small, about $+ in. broad, in terminal clusters, Coast 
of Maine and New Hampshire. June-July. 
9. BP. fruticosa, L. (Fig. 3, pl. 65.) Snrusppy CrnqueFort. Low, 
much branched shrubs growing in tufted groups. Stems 4 to 4 ft. high, 
with shreddy bark. Leaflets 5 (or 7), narrow oblong, without serrations 
at borders, silky, the margins rolling. Flowers yellow, about an inch 
broad, terminal, In moist pastures, Maine to New Jersey. June-Sept. 
10. P, tridentata, Soland. (Fig. 2, pl. 65.) Turer-TootHep CINn- 
QUEFOIL, Stems 1 to 10 in. high, woody at base. Plants growing in 
