256 XLVIII. ROSACEiE. Spirjsa. 



* Leaves without stipules. 



1. S. TOMEXTosA. Hardhxick. 



Ferniginous-tomentose ; lis. simple, ovate-lanceolate, smoothish above, 

 unequally serrate ; roc. short, dense, aggregated in a dense, slender, terminal 

 panicle ; 'carpels 5.— A small shrub, very common in pastures and low grounds, 

 Can. and U. S. Stem vervhard, brittle, consequentlv troublesome to the scythe 

 of the hay-maker. Leaves"U— 2' long, h as wide, dark green above, rusty white 

 with a dense tomentum beneath, crowded, and on short petioles. Flowers 

 small, very numerous, with conspicuous stamens, light purple, forming a slen- 

 der, pjTamidal cluster of some beauty. The persistent fruit in winter furnishes 

 food lor the snow bird. Jl. Aug. 



2. S. sALiciFOLiA. (S. alba. Bv:.) Queen of the Meadmc . Meadow-sweet. 

 Nearly glabrous ; lis. oblong, obovate or lanceolate, sharply serrate ; roc. 



forming a niore or less dense, terminal panicle ; carpels 5. — A small shrub in 

 meadows, thickets, U. S. and Brit. Am. Stems 3 — 4f high, slender, purplish, 

 brittle. Leaves smooth, 1^—3' long, \—l as wide, acute at each end, petiolate, 

 often with small leaves in the axils. Flowers white, often tinged with red, 

 small, numerous, with conspicuous stamens, in a more or less spreading pani- 

 cle. Jl. Aug. t 



3. S. Aruncus. Goat's Beard. 



Herbaceous ; lis. membranaceous, tripinnate ; Ifts. oblong-lanceolate, acu- 

 minate, the terminal ones ovate-lanceolate, doubly and sharply serrate ;/s. 9 <^, 

 yery numerous ; carpels 3 — 5, very smooth. — On the Catskill Mts., N. Y. to Ga. 

 Torrev (^ Gray. Stem 4 — 6f high, branching. Flowers very small, white, 

 in numerous, slender racemes, forming a large, compound panicle. Jn. Jl. 

 0. Fis. in very long, virgate racemes. Georgetown, D. C. Bobbins. 



4. S. coRYMBosA. Raf. (S. chamsedrifolia. Ph.) Corymbose Spiraea. 

 Lvs. ovate or oblong-oval, incisely and unequally serrate near the apex, 



whitish with minute tomentum beneath ; corymbs large, terminal, pedunculate, 

 fastigiate, compound, dense, often leafy ; sty. and carpels 3 — 5. — Mountains, 

 Fenn. Fauquier Co., Va. Dr. Bobbins, to Ky. S. to Flor. Stem slightly pu- 

 bescent, reddish, 1 — 2f high. Leaves nearly smooth abov^e, entire towards the 

 base, 2 — 3' by f — If. Flowers innumerable, white or rose-colored, in a co- 

 rymb 4 — 6' broad. May, Jn. f 



5, S. HYPERiciFOLiA St. Pctefs Wrcoth. — Lvs. obovate-oblong, obtuse, ta- 

 pering at base to a petiole, entire or slightly dentate, nearly smooth ; /5. in 

 pedunculate corymbs or sessile umbels ; pedicels smooth or pubescent ; segments 

 of the caly.r ascending. — Cultivated in gardens and shrubberies. Shrub 3 — 5f 

 high, nearly smooth in all its parts. Flowers white, in numerous umbels, ter- 

 minating the short, lateral branches. Pedicels as long as the leaves. May. f 



* * leaves accompanied with stipules. 



6. S. soRBiPOLiA. Sorb-leaved Spircsa.— Shrub stout, v.nth straggling hra.nchcs 

 and rough bark ; Zr.';. unequally pinnate ; lateral Ifts. oblong-lanceolate; ter7)ii- 

 nal 07i€ larger, irregularly lobed, all acuminate, sessile and doubly serrate ; fs. 

 in thyrsoid panicles, large, numerous, white. — In shrubberies. Height 4— -6f. 

 May. t 



S. 7. OPUUFOLiA. Ninc-barJc. 



Nearly glabrous ; lvs. roundish, 3-lobed, petiolate, doubly-serrate ; corymbs 

 pedunculate ; "^ c«?776:/5 3 — 5, exceeding the calyx in fruit. — A beautiful shrub, 

 3_5f. high, on the banks of streams, Ca«. la. ! Mo. S. to Ga., rare. Bark 

 loose, outer layers deciduous. Leaves 1 — 2^' long, nearly as wide, sometimes 

 cordate at base, with 3 obtuse lobes above, petioles 6—9" long. Cor^vmbs re- 

 sembling simple umbelSj hemispherical, 1— 2i' diam. Flowers white, otten 

 tinged with purple. Follicles diverging, smooth, shining, purple, 2-.seeded. Jn.f 



8. S. LOBATA. Siberian Bed Spircca. 



Herbaceous; lvs. pinnately 3 — 7 foliate, often with smaller leaflets inter- 

 posed, lateral Ifts. of 3, lanceolate lobes, cuneate at base, terminal one large, 

 pedately 7— 9-parted, lobes all doubly serrate ; slip, reniform ; panicle large, 

 cymosely branched ; fls. large, deep rose-color ; carpels 6 — 8. — An herb of ex- 



