244 Karl M. Wiegand and Arthur J. Eames 



3. Sorbaria A. Br. 

 1. S. sorbifolia (L.) A. Br. 



Roadsides, thickets, and waste places, in gravelly soils ; rare. 



Thicket, mouth of Enfield Glen near Newfield road, 1922 (W . C. Muenscher) ; 

 s. side Six Mile Creek, near reservoir, 1923 (collector unknown) ; roadside s. of 

 McLean station. 



Escaped from cultivation. Native of Asia. 



Sorbaria is in the list of nomina conservanda of the International Code. 



4. Filipendula (Tourn.) Mill. 



a. Leaflets large, the terminal ones much the largest and palmately lobed. 



b. Leaves green both sides, the lateral leaflets lobed. 1. F. rubra 



b. Leaves white-tomentose beneath, the lateral leaflets not lobed. 2. F. Ulmaria 



a. Leaflets small, about 3 cm. long, all similar, and pinnatisect. [F. hexapetala] 



1. F. rubra (Hill) Robinson. (Spiraea lobata of Cayuga Fl.) Queen of the 



Prairie. 



Roadsides and yards, in rich soil ; occasional. July. 



Five miles s. w. of Newfield (IV. C. Muenscher) ; "a bed of this plant has been 

 growing vigorously for some years on the marsh north of Ithaca [near Jarvis' boat- 

 house]" (D.) ; roadside n. w. of West Dryden. 



Native from Pa. to Mich., southw. to Ga., Ky., and Iowa; locally established 

 northeastw. 



2. F. Ulmaria (L.) Maxim. Queen of the Meadow. 

 Roadsides and vacant lots ; occasional. July. 



Escaped from cultivation: roadsides n. of Danby (A. J. E. & L. H. MacDaniels) ; 

 roadside, one mile above Enfield Falls (W. C. Muenscher) ; Connecticut Hill; ravine 

 n. of Buttermilk Glen ; near Hudson St., South Hill ; roadside n. of West Dryden ; 

 roadside near Duck Lake (L. Griscom & A. H. Wright). 



Native of Eurasia. 



[F. HEXAPETALA Gilib. MEADOW-SWEET. DR0PW0RT. 



Escaped from cultivation n. of Forest Home, 1909 (Wm. Moore), but probably not 

 established. 



Native of Eurasia.] 



5. Gillenia Moench 

 1. G. trifoliata (L.) Moench. Bowman's Root. False Ipecac. Indian Physic. 



Dry open woods, usually with oak, in gravelly or stony, slightly acid, soils usually 

 mixed with clay; frequent. June. 



Cayuta Lake ; near South Hill Marsh ; Coy Glen ; Cascadilla woods ; Beebe Lake ; 

 Renwick slope; Ludlowville; and elsewhere. Not recorded from the lighter sandy 

 soils or from the more residual soils of the higher hills. 



Ont, N. Y., and N. J., to Mich., southw. to Ga. and Mo. ; rare or absent on the 

 Coastal Plain. 



6. Pyrus (Tourn.) L™ 

 1. P. communis L. Common Pear. 



Rich banks ; occasionally self -seeding. May 1-20. 



Escaped from cultivation, and scattered throughout the basin. 



Native of Eu. 



19 Following Schneider, Render in part, and some European authors, the old genus Pyrus is 

 here divided into four genera: Pyrus, Malus, Aronia, and Sorbus. Pyrus and Malus are dis- 

 tinct in style character, and fairly distinct as to hypanthium and stone-cells of the flesh, and 

 they do not hybridize. The corymbose inflorescence and the size of flowers render Aronia and 

 Sorbus distinct from Pyrus and Malus. Aronia and Sorbus are very similar structurally, but 

 custom and the general difference in appearance of the plants make a separation of the two 

 as distinct genera desirable. 



