506 FLORA. 



19. Potentilla littoralis Rydb. COAST CINQUEFOIL. (I. F. f. 1930.) Per- 

 ennial, tufted ; stems ascending or decumbent, 2-4 dm. high, appressed-silky or 

 glabrate. Leaflets oblanceolate or obovate, incised-pinnatifid into oblong obtuse 

 segments, grayish -pubescent beneath, green and glabrate above, 1-6 cm. long ; 

 flowers yellow, cymose, 8-10 mm. broad ; petals obovate, equalling or slightly 

 exceeding the ovate acute veined sepals and the lanceolate bractlets ; stamens 

 20-25 > style thickened below. Coast of Newf. and Lab. to Quebec and N. H. 

 June-July. 



20. Potentilla multifida L. CUT-LEAVED CINQUEFOIL. (I. F. f. 1931.) 

 Perennial ; stems several or many from the caudex, low, ascending or spreading, 

 appressed-silky. Leaves pinnately 5-9-foliolate, grayish-tomentose beneath, 

 glabrate above ; leaflets finely divided to near the midrib into linear acute seg- 

 ments, with more or less revolute margins ; petals a little exceeding the ovate- 

 lanceolate acute sepals ; style short, not thickened at the base. Hudson Bay and 

 the N. W. Terr. Also in Europe and Asia. Summer. 



21. Potentilla Canadensis L. FIVE-FINGER. (I. F. f. 1935.) Stem slender, 

 at first erect, later decumbent or prostrate, 4-6 dm. long, silky-villous; leaves peti- 

 oled, digitately 5-foliolate (rarely 3-4-foliolate) ; leaflets oblanceolate or oblong, 

 2-4 cm. long, incisely serrate, at least above; flowers 10-12 mm. broad; petals 5, 

 broadly oval, slightly longer than the acute calyx- lobes and linear-lanceolate 

 bractlets. In dry soil, Me. and Quebec to Ga., Minn, and the Ind. Terr. April- 

 Aug. Called also Wild Strawberry. 



Potentilla Canadensis simplex (Michx.) T. & G. Stem elongated, 5-10 dm. long, 

 the pubescence more appressed; leaves larger, more glabrate and green; leaflets often 

 5-6 cm. long. 



Potentilla r^ptans L., a European species, collected on ballast at Camden, N. J., 

 differs in its more closely creeping habit, smaller leaves, and very broad elliptic bractlets. 



22. Potentilla pumila Poir. DWARF FIVE-FINGER. (I. F. f. i935a.) Low 

 perennial herb, seldom more than a few inches high; flowering stems at first very 

 short and upright, later in the season producing some slender prostrate runners; 

 whole plant densely silky-strigose; basal leaves digitately 5-foliolate, on slender 

 petioles; stem-leaves few and often only 3-foliolate; leaflets obovate, sharply serrate, 

 usually about 2 cm. long ; otherwise as the preceding. In poor soil, N. Eng. to 

 Penn. 



23. Potentilla prpcumbens Sibth. WOOD CINQUEFOIL. (I. F. f. 1936.) 

 Diffusely branched, trailing or ascending, very slender, somewhat pubescent, 1-6 

 dm. long. Leaflets oblanceolate or obovate. sharply dentate above; peduncles 

 usually much exceeding the leaves; flowers 6-8 mm. broad; petals obovate, emar- 

 ginate, or rounded, exceeding the acute calyx-lobes and bractlets. Lab. (accord- 

 ing to Hooker). Common in Europe. Summer. [P. nemoralis Nestl.] 



17. WALDSTEINIA Willd. 



Perennial herbs with the aspect of Strawberries, with alternate mainly 

 basal long-petioled 3-5-foliolate or lobed leaves, membranous stipules, and 

 yellow corymbose flowers on bracted scapes. Calyx persistent, the tube top- 

 shaped, minutely 5-bracteolate or bractless at the summit, 5-lobed. Petals 5. 

 Stamens co , inserted on the throat of the calyx ; filaments rigid, persistent. 

 Carpels 2-6, inserted on a short villous receptacle ; style nearly terminal, 

 deciduous, filiform. Achenes 2-6, obliquely obovoid, pubescent. Seed erect. 

 [Named in honor of Franz Adam von Waldstein-Wartenburg, 1759-1823, a 

 German botanist.] Five known species, natives of the north temperate zone. 

 Besides the following, another occurs in Ga. 



Petals obovate, longer than the sepals. i. W. fragarioides. 



Petals linear-oblong or narrowly elliptic, shorter than the sepals. 



2. W. parviflora. 



I. Waldsteinia fragarioides (Michx.) Tratt. BARREN OR DRY STRAWBERRY. 

 (I. F. f. 1939.) Pubescent, or nearly glabrous; rootstock creeping, rather stout. 

 Leaves tufted, long-petioled, 3-foliolate (rarely 5-foliolate); leaflets obovate, obtuse 

 at the apex, broadly cuneate at the base, dentate or crenate and sometimes 



