352 XLVIII. ROSACEiE. Fragaria. 



few large, incised teeth, smooth above, silvery-canescent beneath, sessile ; fls, 

 in a cymose corymb ; pet. longer than the obtusish sepals. — A pretty species, on 

 dry or rocky hills. Can. and N. States, remarkable for the silvery whiteness of 

 the lower surface of the leaves. Stems 6 — 10' long, at length with slender 

 branches. Leaflets 5 — 9" by 1 — 2", with 2 or 3 slender, spreading teeth each 

 side ; upper ones linear, entire. Flowers small. Calyx canescent. Petals yel- 

 low. Jn. — Sept. 



* * * Leaves pinnate. 



6. P. FRUTicosA. (P. floribunda. PA.) Shrubby Cinquefoil. 



S/. fruticose, very branching, hirsute, erect; Ifts. 5 — 7, linear-oblong, all 

 sessile, margin entire and revolute; pd. large, much longer than the calyx. — A 

 low, bushy shrub, in meadows and rocky hills. Northern States and Brit. Am. 

 Stems 1 — 2f high, with a reddish bark ; petioles shorter than the leaves. Leaf- 

 lets \ — U' (mostly 1') by 2 — 3" wide, acute, crowded, pubescent. Stipules 

 nearly as long as the petioles. Flowers | — li' diara., yellow, in terminal clus- 

 tei-s. Jn. — Aug. 



7. P. ANSERlNA. Silver-u-eed. Goose-grass. 



St. slender, creeping, prostrate, rooting ; Ivs. interruptedly pinnate ; Ifts. 

 many pairs, oblong, deeply serrate, canescent beneath; ped. solitary, 1-flowered, 

 very long. — A fine species on wet shores and meadows, N. Eng. to Arctic Am. 

 Stems subterraneous, sending out reddish stolons 1 — 2f long. Petioles mostly 

 radical, 6 — 10' long. Leaflets 1 — IJ' by 3 — 6", sessile, with several minute 

 pairs interposed. Peduncles as long as the leaves. Fls. yellow, 1' diam. Jn. — Sept. 



8. P. ARGUTA. Ph. (P. confertiflora. Hitchcock. Boottia sylvestris. Bw.) 

 False Avens. White-flov:ered Poicntilla. — St. erect; radical Ivs. on long 



petioles, 7 — 9-foliate, cauline few, 3 — 7-foliate ; Ifts. broadly ovate, cut-serrate ; 

 fls. in dense, terminal cymes. — Along streams, &c., Can. and N. States, W. to 

 the Rock}' Mis. Stems 2 — 3f high, stout, terete, striate, and with nearly the 

 whole plant very pubescent. Radical leaves If or more long. Leaflets 1 — 2' 

 long, fas wide, sessile, odd one petiolulate. Fls. about 8" diam. Petals round- 

 ish, yellowish white, longer than the sepals. Disk glandular, 5-lobed. May, Jn. 



9. P. PARADoxA. Nutt, (P. supina. Mx.^ 



Decumbent at base, pubescent; Ivs. pinnate; Ifts. 7 — 9, obovate-oblong, 

 incised, the upper ones confluent ; slip, ovate ; ped. solitary, recurved in Iruit ; 

 pet. obovate, about equaling the sepals; ach. 2-lobed, the lower portion chiefly 

 composed of starch-like albumen. — River banks, Ohio to Oregon. Nuttall in 

 T. & G. Fl. p. 437. 



13. COM Arum. 



Gr. KOfiapoi, the strawberrj' tree, which this plant resembles. 



Calyx flat, deeply 5-cleft, with bracteoles alternating with the seg- 

 ments ; petals 5, very small ; stamens numerous, inserted into the 

 disk ; achenia smooth, crowded upon the enlarged, ovate, spongy, per- 

 sistent receptacle. — % Lvs. 'pinnate. 



C. PAixsTRE. Marsh CinqvefoU. 



In spagnous swamps, N. States ! Wise. ! to the Arctic Circle. Stems creep- 

 ing at base, 1 — 2f high, nearly smooth, branching. Leaflets 3,5 and 7, crowded, 

 li — 2i' long, ^ as wide, oblong-lanceolate, hoary beneath, obtuse, sharply ser- 

 rate, subsessile ; petiole longer than the scarious, woolly, adnate stipules at 

 base. Flowers large. Calyx segments .several times larger than the petals. 

 Petals about 3" long, ovate-lanceolate, and, with the stamens, styles and upper 

 surface of the sepals, dark purple. Fruit permanent. Jn. 



14. FRAGARIA. 



h&t.fragrans, frapnuit ; on account of its perfumed fr\ut. 



Calyx concave, deeply 5-cleft, with an equal number of alternate, 

 exterior segments or bracteoles ; petals 5, obcordate ; stamens 00 ; 

 achenia smooth, affixed to a large, pulpy, deciduous receptacle. — '^1- 

 Stems stoloniferms. Lvs. irifoliate. F/s. on a s<:app, white. 



