284 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



3. Antemiaria neglecta Greene. 



Pastures, old fields, meadows, and roadside banks; abundant throughout. Apr. -May. 

 Northeastern N. Amer., south to Va. 

 The staminate plants mostly precede the pistillate. 



4. Antennaria arnoglossa Greene. 



Open or partially shaded grassy slopes or old meadows, occasionally in damp thickets; 

 abundant. May. N. Eng. to Va. and westward. 



Staminate plants are rare. This species was described from local material; it may 

 not be separable from A. parlinii Fernald. 

 fi. Antennaria fallax Greene. 



Open, moist or dryish fields or pastures or at border of woods; general, but much 

 less common than the last, which it closely resembles in most characters and from 

 which it may not be distinct. Apr-May. Eastern U. S. 

 6. Antennaria plantaginifolia (L.) Richards. 



Stony slopes, in thin shade of pines or beeches, or sometimes on open grassy hill- 

 sides; abundant throughout. Apr.-May. Eastern U. S. (.4. decipiens Greene.) 



The staminate plants are abundant, in contrast to the last two species. 



21. GNAPHALIUM L. 



LeaveB glabrous or nearly so on the upper surface, densely white-woolly beneath, 

 usually acute or acuminate, broadest at or near the middle; heads short-stalked, 

 in corymbs, the bracts white or brownish; pappus bristles distinct, falling sep- 

 arately; plants usually 60 cm. high or more 1. G. obtusifolium. 



Leaves copiously woolly on both surfaces, or sometimes glabrate on the upper surface 

 in age; heads sessile, in spikes or dense clusters; plants mostly low, only rarely 

 60 cm. high and usually much lower. 

 Stem leaves linear or nearly so, acute or acutish; heads clustered, whitish; pappus 



bristles distinct; stems much branched 2. G. uliginosum. 



Stem leaves spatulate, obtuse; heads spicate, usually purplish; pappus bristles 

 united at the base; stems mostly simple 3. G. purpureum. 



1. Gnaphalium obtusifolium L. Everlasting. 



Dry open fields; common. July-Sept. Eastern N. Amer. (G. polycephalum 

 Michx.) 



2. Gnaphalium uliginosum L. Low cudweed. 

 Wet meadows; near Le Droit Park and sources of Piney Branch (Ward); not col- 

 lected since 1884. Widely distributed in N. Amer. 



3. Gnaphalium purpureum L. Purplish cudweed. 

 Open fields or low ground; frequent. May-Sept. Eastern U. S. and in tropical 



Amer. 



A single specimen of G. spathulatum Lam., native of the Gulf states, was collected 

 in the Department of Agriculture Grounds, Oct., 1898 (Steele), This species resembles 

 G. purpureum., but the stems are usually branched, the leaves thin, and the heads 

 densely woolly. 



Inula helenium L., elecampane, a native of Europe, was reported by Knowlton 

 from Mount Vernon. It is a tall coarse perennial with large yellow heads. Inula 

 britlanica L., also of Europe, was collected along the Pennsylvania Railroad, southeast 

 of H Street Bridge, July and Aug., 1915 (J. B. S. Norton). 



