220 LYTHRACEAE 



2. Elaeagnus argen ea Pursh. Buffalo or RabbiT-berry. (Man. 

 p. 647 ; I. F.y. ZS38.) Manitoba and Minn, to Saskatchewan, Kans. and 

 Nev. Adv. eastward. — Pennsylvania : Delaware. 



Order 22. MYRTALES. 



Style present, simple or compound : stigma terminal. 



Anthers opening by pores. Fam. i. Melastomaceak. 



Anthers opening by longitudinal valves. 

 ' Hypanthium merely enclosing the ovary. Fam. 2. Lythraceae. 



Hypanthiumadnate to the ovary or mainly so. Fam. 3. Onagraceae. 

 Style wanting : stigmas sessile. Fam. 4. Haloragidaceae. 



Family i. MELASTOMACEAE R. Br. Meadow Beauty Family. 



1. RHEXIA I,. 



Stems terete : leaf-blades relatively narrow, mainly short-petioled. 



I. R. Mariana. 

 Stems angled : leaf-blades relatively broad, mainly sessile. 2. S. Virginica. 



1. Rhezla Mariana L. Maryland Meadow BeauTy. (Man. p. 651 ; 

 I. 'P./. 2SS^-) III swamps or low grounds, L. I. to Fla., Ky., Mo., and Tex. 

 —Pennsylvania : Bucks, Bristol. 



2. Rhezia Virginica L. Meadow-BeauTy. DEER-Grass. (Man. p. 

 651 ; I. F. f. 2SS2-) In sandy swatnps, Me. to Fla., 111., Mo. and La. — 

 Pennsylvania : Monroe, Pocomo ; Bucks ; Delaware ; Chester ; 

 Lycoming ; Carbon ; Lancaster ; York ; Perry ; Franklin. 



Family 2. LYTHRACEAE LindL Loosestrife Family. 



Flowers regular : hypanthium not oblique. 

 Hypanthium hemispheric, turbinate or campanulate. 

 Herbs : flowers mostly solitary in the axils : capsules septicidal. 



I. ROTALA. 

 Shrubs ; flowers in axillary cymes : capsules loculicidal. ,1. Decodon. 

 Hypanthium cylindric. 3. Lythrum. 



Flowers irregular : hypanthium oblique. 4. Parsonsia. 



1. ROTALA L. 



1. Rotala ramosior (L.) Koehne. Rotala. (Man. p. 649 ; 1. F. /. 

 ^J4S-) In swamps, Mass. to Fla., 111., Neb., Tex. and Mex. Also in 

 Calif., Ore., S. Am. and the W. I. — Pennsylvania: DELAWARE; Ches- 

 ter ; Lancaster, on Susquehanna ; Franklin, Chambersburg. 



2. DECODON J. F. Gmel. 



1. Decodon verticlllatua (L.) Ell. Swamp Willow-herb or 

 Loosestrife, (Man. p. 649 ; I. F. / 2J44. ) in swamps. Me. to Fla., 

 Ont., Minn., Ky. and La. — Pennsylvania : Northampton ; Pike ; Car- 

 bon ; Berks ; Luzerne ; Delaware ; Dauphin ; Franklin ; Craw- 

 ford ; Erie. ' 



