Par 3, 1908] ROSACEAE 267 
Spiraea odorata S. F. Gray, Nat. Arr. Brit. Pl. 2: 589, 1821. 
? Thecanisia discolor Raf. New Fl. 2: 39. 1837. 
Thecanisia Ulmaria Raf. Sylva Tell. 152. 1838. 
Utmaria Ulmaria Barnh. Bull, Torrey Club 21: 491. 1894. 
Stem angled or grooved, 6-20 dm. high, often purple-tinged and puberulent, branched 
above ; leaves interrupted-pinnatisect, with 3-11 larger divisions and smaller ones inter- 
posed, finely puberuleut or glabrate above, white-tomentulose beneath ; terminal division 
3-5-cleft, double-serrate ; the lateral ones ovate, acute, 2-8 cm. long; inflorescence 1-2 dm. 
long, paniculate-cymose, with the lower branches elongate; sepals 4-6, ovate, about 1.5 
mm. long, puberulent; petals white or greenish-white; blades rounded-oval, 2-3 mm. 
long; achenes about 10, semicordate at the base, slightly laterally affixed, spirally twisted, 
3-4 mm. long ; seed oval. 
TYPE LOCALITY: Wet meadows of Europe. 
DISTRIBUTION : Europe and northern Asia; escaped from gardens in eastern North America 
from the lower St. Lawrence to Massachusetts. 
yee Fl. Dan. /. 547; Engl. Bot. £1. 960 ; Sv. Bot. pl. 189 ; Britt. & Brown, Ill. Fl. 
2. Filipendula denudata (Presl) Rydberg. 
Spiraea denudata Presl, Fl, Cech. 101. 1819. 
Spiraea Ulmaria denudata Hayne, Arzn. Gew. 8: sub,pl. 32. 1822. 
Spiraea Ulmaria concolor Lange, Haandb, Danske Fl. ed. 2. 334. 1859. 
Filipendula Uimaria denudata Maxim. Acta Hort. Petrop. 6: 252. 1879. 
Stem angled and grooved, 5-15 dm. high, glabrous or puberulent above; leaves inter- 
ruptedly pinnate, with 3-9 principal divisions and often several smaller ones in the inter- 
spaces, finely puberulent on both sides or usually glabrate above, green on both sides, 
strongly veined beneath; terminal division 3-5-cleft, cuneate or truncate at the base, 
finely double-serrate; lateral divisions ovate or lanceolate, acute or acuminate, 2-6 cm. 
long ; inflorescence 1-2 dm. long, rather irregularly paniculate-cymose; sepals 4-6, ovate, 
scarcely 1.5 mm. long, puberulent, reflexed; petals white; blades rounded, about 2 mm. 
long; achenes 6-8, semicordate at the base, slightly laterally affixed, spirally twisted, about 
3 mm. long. 
TYPE LOCALITY: Wet meadows [Bohemia]. 1 . 
DISTRIBUTION: Native of Europe, Siberia, and Mongolia; cultivated and occasionally escaped ; 
established near Dover, Maine. 
3. Filipendula Filipendula (L.) Voss, in Vilmorin, Blumenz. 
ed. 3. 1: 240. 1896.—Asch. & Graebn. Syn. 
Mittel. Eur. Fl. 6: 439. 1902. 
Spiraea Filipendula Y,. Sp. Pl. 490. 1753. 
Filipendula hexapetala Gilib. Fl. Lithuan. 2: 237. 1781. 
Filipendula vulgaris Moench, Meth. 663. 1794. 
Spiraea tuberosa Salisb. Prodr, 364. 1796. 
Ulmaria Filipendula Hill, Hort. Kew. 214. 1768. 
Spiraea vulgaris S. F. Gray, Nat. Arr. Brit. Pl. 2: 588. 1821. 
Perennial with a short rootstock ; roots thickened, fusiform; stem erect, round, simple 
or branched above, almost leafless, 3-6 dm. high; leaves mostly basal with more than 40 
pairs of larger, lanceolate, pinnatifid segments, which are over 2 cm. long, and between them 
smaller 3-5-toothed segments; inflorescence flat; sepals and petals mostly 6; the former 
white, rarely pink or rose, rounded; achenes 10-12, about 3 mm. long, erect, not twisted, 
hispid all over, terete, laterally attached by the semicordate base; style short, reflexed ; 
stigma capitate. 
TYPE LOCALITY: Pastures of Europe. Le : ; ; 
DISTRIBUTION: Rarely escaped from cultivation in eastern United States; native of Europe 
and northern Asia. : 
ILLUSTRATIONS: Fl. Dan. pl. 635 ; Sv. Bot. pl. 154; Eng. Bot. p/. 284; Baxter, Brit. Bot. 2: pl. 
133; Sturm, Deuts. Fl. 5: pl. 18; Cycl. Am. Hort. f. 2609. 
4, Filipendula rubra (Hill) B. L. Robinson, 
Rhodora 8: 204. 1906. 
Ulmaria rubra Hill, Hort. Kew. 214. 1761. 
Spiraea lobata Gronov.; Jacq. Hort. Vind. 1: 38. 1770. 
Thecanisia lobata Raf, New Fl. 2: 38. 1837. 
