256 XLVI. ROSACEA. SPIREA. 
* Leaves without stipules. 
1. S. TomenTésa. Hardhack. : 
Ferruginous-tomentose; dvs. simple, ovate-lanceolate, smoothish above 
unequally serrate ; rac. 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 very hard, brittle, consequently troublesome to the scythe 
of the hay-maker. Leaves 14—2’ long, 4 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 1 ak forming a slen- 
der, pyramidal cluster of some beauty. The persistent fruit in winter furnishes 
tood for the snow bird. Jl. Aug. 
+2. S. sauicrrotia. (S. alba. Bw.) Queen of the Meadow. Meadow-sweet. 
Nearly glabrous; lvs. oblong, obovate or lanceolate, sharply serrate ; rac. 
forming a more or less dense, terminal panicle; carpels 5A small shrub in 
meadows, thickets, U.S. and Brit. Am. Stems 3—4f high, slender, purplish, 
brittle. Leaves smooth, 14—3! long, 3—%4 as wide, acute at each end, petiolate, 
often with smal! leaves in the axils. Flowers white, often tinged with red, 
small, numerous, with conspicuous stamens, in a more or less spreading pani- 
Gens. Aug. tT 
3. S. Aruncus. Goat's Beard. 
Herbaceous; lvs. membranaceous, tripinnate; /fts. oblong-lanceolate, acu- 
minate, the terminal ones ovate-lanceolate, doubly and sharply serrate; fls. 9 3’, 
very numerous; carpels 3—5, very smooth.—On the Catskill Mts., N. Y. to Ga. 
Torrey & Gray. Stem 4—6f high, branching. Flowers very small, white, 
in numerous, slender racemes, forming a large, compound panicle. Jn. Jl. 
8. Fis. in very long, virgate racemes. Georgetown, D.C. Robbins. 
4. S. corymposa. Raf. (S. chamedrifolia. Ph.) Corymbose Spiraea. 
Ins. 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, 
Penn. Fauquier Co., Va. Dr. Robbins, to Ky. 8. to Flor. Stem slightly pu- 
bescent, reddish, 1—2f high. Leaves nearly smooth above, entire towards the 
base, 2—3/ by 3—12’._ Flowers innumerable, white or rose-colored, in a co- 
rymb 4—6/ broad. May, Jn. t 
5. S. nypericirotia St. Peter’s Wreath.—Lvs. obovate-oblong, obtuse, ta- 
pering at base to a petiole, entire or slightly dentate, nearly smooth; fs. in 
pedunculate corymbs or sessile umbels ; pedicels smooth or pubescent; segments 
of the calyx 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. + 
** Leaves accompanied with stupules. 
6. S. sorbirotia. Sorb-leaved Spirea.—Shrub stout, with straggling branches 
and rough bark; Jws. unequally pinnate ; lateral lfts. oblong-lanceolate ; termi- 
nal one larger, irregularly lobed, all acuminate, sessile and doubly serrate; /ls. 
in thyrsoid panicles, large, numerous, white——In shrubberies. Height 4—6f. 
May. fT 
8S. 7. opunirouia. Nine-bark. 
Nearly glabrous; /vs. roundish, 3-lobed, petiolate, doubly-serrate ; corymbs 
pedunculate; carpels 3—5, exceeding the calyx in fruit—A beautiful shrub, 
3—5f. high, on the banks of streams, Caw. Ia.! 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. Corymbs re- 
sembling simple umbels, hemispherical, 1—23/ diam. Flowers white, often 
tinged with purple. Follicles diverging, smooth, shining, purple, 2-seeded. Jn.T 
8. S. Lopara. Siberian Red Spirea. 
Herbaceous; lws. pinnately 3—7 foliate, often with smaller leaflets inter- 
posed, lateral lfts. of 3, lanceolate lobes, cuneate at base, terminal one large, 
pedately 7—9-parted, lobes all doubly serrate; stip. reniform; panicle large, 
eymosely branched; fis. large, deep rose-color; carpels 6—8.—An herb of ex- 
