Genus 6. 



ROSE FAMILY. 



249 



Lateral leaflets palmately 3-s-lobed ; flowers pink or purple. 

 Lateral leaflets merely serrate, or slightly lobed ; flowers white, 



I. Filipendula rubra (Hill) Robinson. 

 Oneen-of-the-Prairie. Fig. 2225. 



Ulmaria rubra Hill, Hort. Kew. 214. />/. 7. 1769. 



Spiraea lobata Gronov. ; Jacq. Hort. Vind. i : 38. 

 pi. 88. 1770. 



Spiraea rubra Britton, Bull. Torr. Club 18 : 270. 

 1891. 



F. rubra Robinson, Rhodora 8: 204. 1906. 



Glabrous, stem branched, grooved, 2°-8° 

 tall. Leaves large, green on both sides, the 

 lower sometimes 3° long, pinnately 3-7-folio- 

 late, commonly with smaller leaf-segments 

 interposed or borne on the petiole ; lateral 

 leaflets sessile, opposite, palmately 3-S-lobed 

 c 3-5-parted, the lobes acute, unequally ser- 

 rate or incised ; terminal leaflet larger, 7-9- 

 parted ; stipules serrate, persistent, 4"-8" 

 long; flowers pink or purple, fragrant, about 

 4" broad; capsules glabrous. 



In moist grounds and on prairies, western 

 Pennsylvania to Illinois and Michigan, south to 

 Georgia, Kentucky and Iowa. Escaped from 

 gardens farther east. June-July. 



2. Filipendula Ulmaria (L.) Maxim. Meadow-sweet or Meadow-Queen. 

 Honey-sweet. Sweet-hay. Fig. 2226. 



Spiraea Uhuaria L. Sp. PI. 490. 1753. 

 Ulmaria palustris Moench, Meth. 663. 1794. 

 Ulmaria Ulmaria Barnhart, Bull. Torr. Club 21 : 



491. 1894. 

 F. Ulmaria Maxim. Acta Hort. Petrop. 6: 251. 



1879. 



Stem branched, angular or grooved, 2°-4° 

 tall. Leaves pinnately 3-9-folioIate, densely 

 and finely white-downy beneath, green above, 

 sometimes with several or numerous much 

 smaller leaf-segments interposed between the 

 leaflets or borne on the petiole; lateral leaf- 

 lets sessile, opposite, ovate or ovate-lanceo- 

 late, acute or acuminate, serrate or sometimes 

 slightly lobed, the terminal one larger and 

 deeply 3-5-Iobed, the lobes acute and serrate; 

 stipules about V long; flowers white or green- 

 ish-white, fragrant. 



Escaped from gardens, Quebec to Massachu- 

 setts. Native of Europe and Asia. June-Aug. 

 Meadow-wort. Herb Christopher. My lady's-belt. 

 Bride-wort. 



Filipendula denudata (Presl) Rydb., differs in 

 having the leaves green on both sides, and is 

 established near Dover, Maine. It is also native 

 of Europe and Asia. 



7. POTENTILLA L. Sp. PI. 495. 1753. 



Herbs, with alternate stipulate digitately or pinnately compound leaves, and cymose or 

 solitary yellow, white or purple perfect flowers. Calyx -persistent, its tube concave or hemi- 

 spheric, S-bracteolate (rarely 4-bracteolate), 5-lobed (rarely 4-lobed). Petals .5 or rarely 4, 

 mostly obovate or orbicular, usually emarginate. Stamens 00, seldom 5 or 10; filaments 

 slender; anthers small. Carpels numerous, inserted on a dry, usually pubescent receptacle; 

 style terminal or nearly so, deciduous. Seed pendulous, anatropous. [Diminutive of potens, 

 powerful, from the medicinal properties of some species.] 



