230 FLORA OF PHILADELPHIA. 



Family 1. THYMELEACEAE Reichenb. Mezereon Family. 

 1. DIECA L. 

 I. Dirca palustris L. Leatherwood, Moosewood. M. p. 646. Damp, rich 

 woods. Spring. 

 Philadelphia — Bartram 's Garden (Pe.). Bucks — Near Doylestown 

 (Fr.). Chester— (P.). Lancaster— (P.). Berks— (P.). Northampton 

 -(P.). 



Gloucester— Near Swedesboro (Li.). Salem— Woodstown (He.), Salem 

 (Wa.). Mercer— Assanpink Creek (C). 



New Costte— Brandywino- Creek; north side above Market Street and 

 above Rockford, Tatnall; Mount Cuba, Cow 6?/. 



Family 2, ELAEAGNACEAE Lindl. Oleaster Family 

 1. ELAEAGNUS L. 

 1. Elaeagntjs argentea Pursh. Silver-berry. M. p. 647. Escaped from 

 cultivation. Summer. 



Elaeagnus LATiroLiA L. Escaped from cultivation and natural- 

 ized. 

 Delaware— Upper Darby, Upper Providence (B. Sm.). 



Order 22. MYRTALES. 



Land or marsh plants, or if aquatic, submerged leaves not dissected. 



Calyx-tube merely enclosing the ovary, but free from it, except at the 

 base. 

 Anthers longitudinally dehiscent. Fam. 1. Lythraceae. 



Anthers opening by terminal pores. Fam. 2. Melastomaceae. 



Calyx-tube almost wholly adnate to the ovary. Fam. 3. Onagraceae. 

 Aquatic or amphibious herbs, the submerged leaves dissected. 



Fam. 4. Haloragidaceae. 



Family 1. LYTHRACEAE Lindl. Loosestrife Family. 



Calyx-tube campanulate or hemispheric; flowers regular. 



Flowers small, axillary, solitary or few; low herbs. 1. Rotala. 



Flowers large, in axillary cymes; large aquatic shrubs. 2. Decodon. 



Calyx-tube cylindric; flowers regular. 3. Lythrum. 



Calyx-tube tubular, oblique; flowers irregular.. 4. Parsonsia. 



1. EOTALA L. 

 1. Rotala ramosioe (L.) Koehne. M. p, 649. Swamps. Summer. 



Delaware— Tinicum, Dr. Geo. Smith (Fu.) (B. Sm.). Chester— (P.). 

 Lancaster — Columbia (Wn.). 



Burlington— Burlington (C). Salem— Sharptown (Wn.). Cape May 

 —Woodbine (Br.). 

 New Castle— Wilmington (Pr.), Barley Mill Dam, etc. Frequent, 



2. DECODON J. F. Gmel. 

 1. Decodon verticillatus (L.) Ell. Swamp Loosestrife. M. p. 649. 

 Swampy grounds. Summer. 

 Bucks— Penn Valley (Fr.). Delaware— Valley of Darby Creek (B. 



