524 ROSACEAE 



4. Fragaria vesca L. Ezo-hebi-ichigo. Closely allied glaucous to green above, prominently glaucous beneath, gla- 

 to No. 2, but slightly larger; terminal leaflets broadly rhombic- brous above, with appressed to ascending long soft pubescence 

 obovate; stamens shorter, 1.5-2.5 mm. long; receptacles gla- beneath especially on the nerves, the petioles long-pubescent; 



brous or only short-pilose at base. Grassy places in low- scapes 1- to 3-flowered, with appressed to ascending pubes- 



lands; Hokkaido; possibly not indigenous in our area. cence; flowers 15-25 mm. across; stamens about 2 mm. long; 



Europe. receptacles glabrous, ovoid to narrowly ovoid in fruit, about 



5. Fragaria iinumae Makino. Potentilla daisenensis 8 mm. across, the achenes in pits, smooth. June-July. Al- 



Honda Nogo-ichigo. Rhizomes rather stout; terminal pine regions; Hokkaido, Honshu (centr. and n. distr. and 



leaflets broadly obovate or cuneate-orbicular, 15-30 mm. long. Mount Daisen in Hoki Prov.). Sakhalin. 



12-25 mm. wide, rounded at apex, broadly cuneate at base, 



9. POTENTILLA L. Kiji-mushiro Zoku 



Herbs or shrubs, glabrous or tomentose; leaves radical or alternate, rarely opposite on the flowering stems, digitately 3- to 

 7-foholate or pinnate, the leaflets toothed or pinnately lobulate, the stipules adnate to the base of the petiole; flowers solitary 

 in leaf -axils or in corymbs, yellow, white, rarely red; calyx persistent, the tube concave to urceolate, the lobes 5, alternate with 

 the bracts of the caliculus, as many as the petals; stamens many; receptacles small, conical, sometimes pilose; carpels many, the 



style lateral or terminal, persistent or deciduous; achenes small, glabrous or pilose, sessile, 1-seeded. More than 300 species, 



in temperate and cooler regions of the N. Hemisphere, rare in the mountains in the Tropics, a few in the S. Hemisphere. 



lA. Receptacles not accrescent after anthesis. 

 2A. Herbaceous or suffrutescent. 



3A. Flowers solitary in axils of much-elongate stolons, the pedicels 10-30 cm. long; leaves pinnate, the leaflets 13-19, densely white- 

 woolly beneath; plants of wet places near the sea and in salt marshes \. P. egedei var. groenlandica 



3B. Flowers at least partially corymbose, the pedicels not more than 4 cm. long; plants of grassy, wooded or rocky places from low- 

 lands to high mountains. 



4A. Leaflets 5, digitate 2. P. hjeiniana 



4B. Leaflets 3 or more, pinnate. 



5A. Stems decumbent and branching, very slender and elongate; flowers axillary, solitary, small 3. P. centigrana 



5B. Stems erect or ascending only below; stolons if present not flower-bearing. 

 6A. Stems scapose, less than 40 cm. long, with 1-3 small cauline leaves. 



7A. Leaflets glaucous beneath 4. P. dickjinsii 



7B. Leaflets green or white-villous beneath. 



8A. Leaflets 3; stolons absent; anthers ovate-globose to broadly ovoid. 



9A. Achenes long-pilose; leaves broadly cuneate, truncate, with 3 coarse teeth at apex 5. P. miyabei 



9B. Achenes glabrous or nearly so; leaflets with few to several teeth on each side. 



lOA. Leaves densely white-tomentose beneath 6. P. nivea 



lOB. Leaves green on both sides. 



11 A. Leaves rather densely long-pubescent, thick; flowers 3-4 cm. across 7. P. megalantha 



IIB. Leaves loosely long-pilose, rather thin; flowers about 2 cm. across 8. P. matsumurae 



8B. Leaflets 3-7, if 3, plant with stolons; anthers oblong to broadly lanceolate. 



12 A. Leaves with dense white-woolly hairs beneath; plant without stolons 9. P. discolor 



12B. Leaves green or pale green beneath, not white-woolly. 

 13A. Leaflets 5-7, rarely 9. 

 14A. Stolons absent. 



15A. Leaflets 5-9, the lower gradually smaller 10. P. fragarioides var. major 



15B. Leaflets 3, sometimes with a pair of smaller ones on the upper part of the leaf-axis 11. P. togasii 



14B. Stolons elongate 12. P. stolonijera 



13B. Leaflets 3, rarely 5. 



16A. Leaflets usually rhombic-ovate, acute to acuminate, thinly membranous; flowers 1-7, 15-20 mm. across; 



rhizomes scarcely thickened, stolons much elongate, prominent 13. P. yol^tisaiana 



16B. Leaflets usually oblong, obtuse to subacute; flowers few to rather many, 1—1.5 cm. across; rhizomes short and 

 thickened, often bearing rather short to slightly elongate stolons. 

 17A. Leaflets herbaceous; stipules of the bracts broadly obovate or flabellate, dilated at tip, prominently toothed 



on margin; anthers narrowly oblong, yellow 14. P. freyniana 



17B. Leaflets subcoriaceous, lustrous above; stipules of the bracts oblong to lanceolate, not dilated, with fewer 



smaller teeth near apex; anthers ovate-orbicular, pale yellow 15. P. riparia 



6B. Stems erect or with ascending base, 30-100 cm. long, rather stout, leafy; flowers many. 

 18A. Cauline leaves 3-foliolate, green; leaflets toothed. 



19A. Stipules adnate for half the length of the petioles; perennial; cauline leaves of 3 elliptic -ovate leaflets. 



16. P. cryptotaeniae 

 19B. Stipules adnate only at the base of the petioles; annual or biennial; cauline leaves of 3 (rarely 5) obovate to oblong, 



obtuse to subacute leaflets 17. P. norvegica 



18B. Cauline leaves, at least the lower ones, pinnately compound; leaflets pinnately lobed to parted, witii short white-woolly 

 tomentum beneath. 



