92 FLORA OF PHILADELFEIA. 



2. Eriocaulon Parkeri Eobinson. M. p. 1052; 2cl ed. Tidal river shores. 



Late summer. 

 Philadelphia— Andalusia (Br.), Torresdale (Wn.), 

 Camden— Camden, above Cooper's Creek (Br.). 



3. Eriocaulon compressum Lam. M. p. 237. Pine-barren swamps. Sum- 



mer. 

 New Jersey — Frequent. 



4. Eriocaulon decangulare L. M. p. 237. 



Burli7igton— (Quaker Bridge (Fr.), Atsion (He.) (Le.) (Te.). Camden 

 Atco (Gi.), Cedar Brook (Mac), Berlin (Te.). Cape May—Bees\ej9 

 Point. Atlantic — May 's Landing (He.) (Li.), Baker's Pond (Li.). 

 Ocean— Forked Eiver (Cr.), Tuckerton (Sts.) (Te.), Manchester (Te.). 



Family 3. COMMELINACEAE Reichenb. Spiderwort Family. 



Perfect stamens 3, rarely 2; petals unequal; bracts spathe-like. 



1. Commelina. 

 Perfect stamens 6, rarely 5; petals all aliie; bracts leaf -like. 



2. Tradescantia. 

 1. COMMELINA L. Day-flowek. 



Spathes not united at the base. 



ISpathes acuminate; capsules 3-celled, 5-seeded. 1. C. nudiflora, 



Spathes acute; capsules 2-celled, 4-seeded. 2. C. communis. 

 Spathes with united bases. 



All three cavities of the ovary with 2 ovules. 



Capsules 2-valved, dorsal cavity indehiscent. 3. C. Virginica. 



Capsules 3-valved, all cavities dehiscent. 4. C. erecta. 

 Ventral cavities of the ovary with 2 ovules, dorsal cavity with one 



ovule. 5. C. hirtella. 



1. Commelina nudiflora L. M. p. 239. Alluvial banks and waste places. 



Summer. 



Philadelphia— Wiasahickon (Cr.), Fairmount Park (Gi.). Delaware 

 — Tinicum, T. C. Palmer (Fu.), Valley of Darby Creek (B. Sm.). 

 Chester — (P.). N ortJuimpt on — Eaaton, Porter (B. C). Dauphin — 

 Steelton (Wn.). 



i^MrZtn^ion— Moorestown, Beverly (C). Cawden— Merchantville (C), 

 Kaighns Point (Wn.). G^OMcesier— Woodbury (C), Center Square near 

 Miekleton (He.), Swcdesboro (Li.). Salem— Penns Grove (C). At- 

 lantic—Atlantic City (C), Absecon, Egg Harbor (Wn.). 



2. Commelina communis L. M. p. 240. Waste places. Summer and 



autumn. 

 JBticfcs— Sellersville, Tullytown (Fr.). Lancaster— (P.). Northamp- 

 ton — (P.). Dauphin — Harrisburg (P.). 



3. Commelina Virginica L. M. p. 240. Moist soil. Summer. 



4. Commelina erecta L. M. p. 240. Moist soil. Summer. 



Lancaster— Peach Bottom (Ca.). 

 Camden — Kaighns Point (C). 



5. Commelina hirtella Vahl. M. p. 240. Moist soil. Summer and 



autumn. 

 Lancaster— On the Susquehanna (P.). 



