334 FLOEA OF PHILADELPHIA. 



22. GIFOLA Cass. 

 1. GiFOLA Germanica (L.) Dumort. Herba-ivipia. M. p. 972. Dry fields. 

 Summer. 

 Philadelphia — (P.). Bucks — Bedminster Cemetery (Fr.). Delaware — 

 Haverford, Dr. Geo. Smith (Fu.). Chester — (P.). Lancaster — (P.). 

 Camden — Ballast (C). Monmouth — Shrewsbury (C). 

 New CasiZe— John Talley's. 



23. PLUCHEA Cass. Marsh Fleabane. 



Perennial; leaves sessile, cordate, or clasping at the base. 1. P. foetida. 

 Annual; leaves, at least those of the stem, petioled. 2. P. camphorata. 



1. Pluchea foetida (L.) B. S. P. M. p. 973. Swamps. Summer. 



Cape May — Cape May (Ja.). 



2. Pluchea camphorata (L.) DC. M. p. 973. Salt marshes. Autumn. 



Philadel2)hia—Mmm Street Wharf (Ja.). Buds— Bristol (P.). 



Neiv Jersey — Common. 



New Castle — Collins ' Beach. Rare. 



24. ANTENNARIA Gaertn. Cat's-foot. Everlasting. 



Basal leaves small, 0.7-2 cm. long, 1-nerved or indistinctly 3-nerved. 

 Basal leaves spatulate, usually abruptly mucronulate. 



1. A. neodioica. 

 Basal leaves obovate to oblanceolate, acute or obtuse. 



2. A. neglecta. 

 Basal leaves large, 2-12 cm. long, distinctly 3-nerved, sometimes 5-nerved, 



the lateral nerves also often prominent. 



Plants not glandular; leaves dull and woolly on the ux^per surface, at 

 least when young. 



Involucre of the fertile plants 6-8 mm. high. 3. A. plantaginifolia. 



Involucre 8-10.5 mm. high. 4. A. fallax. 



Plants glandular, at least above. 5. A. Parlinii. 



1. Antennaria neodioica Greene. M. p. 975. Dry, shaded places. Spring 



and early summer. 



2. Antennaria neglecta Greene. M. p. 975. Fields and pastures. Spring. 



3. Antennaria plantaginifolia (L.) Richards. M. p. 975. Sterile soil, 



especially in open woods. Spring. 



4. Antennaria fallax Greene. M. p. 976. Dry soil. Spring. 



Mercer — Trenton. 



5. Antennaria Parlinii Fernald. M. p. 976. Dry soil. Spring. 



BMc/i-s — Tullytown (P.). 



25. ANAPHALIS DC. 



1. Anaphalis margaritacea (L.) Benth. & Hook. Pearly Everlasting. 

 M. p. 977. Dry soil. Summer. 



26. GNAPHALIUM L. Everlasting. Gudv^eed. 



Tall, erect ; inflorescence corymbose or paniculate ; pappus-bristles distinct. 



1. G. obtusifolium. 

 Low, diffuse ; inflorescence mostly capitate ; pappus-bristles distinct. 



2. G. uUginosum. 

 Slender, simple; heads spicate; pappus-bristles united at base, falling away 



in a ring. 3. G. purpureum. 



