820 



COMPOSITAE (composite FAMILY) 



••-*. Basal leaves lavi 



28. ANTENNARIA Gaertn. Everlasting. Ladies' Tobacco. Pussy's Toes 



Heads maiiy-flowered, dioecious ; flowers all tubular ; pistillate corollas very- 

 slender. Involucre dry and scarious, white or colored, imbricated. Receptacle 

 convex or flat, not chaffy. Anthers caudate. Achenes terete or flattish ; pap- 

 pus a single row of bristles, in the fertile flowers capillary, united at the base so 

 as to fall in a ring, and in the sterile thickened and club-shaped or barbellate at 

 the summit. — Perennial white-woolly herbs, with entire leaves and corymbose 

 or racemose (rarely single) heads. Corolla whitish. Staminate plants smaller 

 than the pistillate, abundant only in nos. 3, 9, and 10, though occasionally found 

 in most of the others ; many species parthenogenetic or apogamous. Involucral 

 bracts of the staminate heads with broad white petaloid tips. (Name from the 

 resemblance of the sterile pappus to the antennae of certain insects.) 



iV.^. — The figures in this genus are on a scale of f. 

 * Stolons assurgent, i.e. decnmbent at base but ivith definitely ascending tips, 

 rather leafy throughout, but with the terminal leaves much the larger. {In 

 shade the stolons elongating and suggesting those of the last group.) 

 H- Basal leaves and those at the tips of the stolons bright green above, glabrous 

 from the first, or at most only a little arachnoid when young and soon quite 

 glabrate. 



, 5-12 cm. long, broadly obovate or obovate-spatulate, obtuse 

 or rounded at tip, definitely 3-ne7'ved. 



1. A. Parlinii Fernald. Stout and tall, becoming 

 3-5 dm. high ; the stem, stolons, arid stem-leaves bear- 

 ing purplish glandular hairs; lower scem-leaves 

 crowded, oblong or oblong-lanceolate, obtuse or acu- 

 tish ; heads of the pistillate plant loosely or densely 

 corymbose; involucre 8-10.5 mm. high, of about 3 

 rows of bracts ; styles becoming crimson. {A. arno- 

 glossa Greene.) — Rich soil, often in open woods, 

 N. E. to la. and D.C. May-July. Fig. 976. 



++ ++ Basal leaves small, generally less than 5 cm. long, 

 spatulate to oblanceolate, acute or obtuse, only 1 

 nerve prominent. 



A. dioica (L.) Gaertn. Low (1.5 dm. or less high); 



basal leaves rarely 2 cm. long ; stem-leaves crowded; 



heads subsessile, subglomerulate ; bracts of pistillate 

 heads rose-color, the outer oblong and obtuse, the 

 inner acutish. — Found "in woods" at Providence, 

 R. I., by Geo. Thurber in 1844, but not since col- 

 lected ; probably a casual introduction. 



2. A. canadensis Greene. Forming broad mats; 

 stems slender, becoming 3-5 dm. high ; basal leaves 

 generally more than 2 cm. long; stem-leaves scat- 

 tered ; heads loosely corymbose ; involucre of the 

 pistillate head 7-11 mm. long; staminate heads 

 smaller, their bracts with broad white petaloid tips ; 

 styles pale, drying brownish. — Dry mostly open 

 soil, Nfd. to Man., s. to Ct., centr. N. Y., and Mich. 

 4- H- Basal leaves and those at the tips of the stolons dull above, invested with 



tomentose or arachnoid pubescence, only the very oldest becoming glabrate. 

 ^ Basal leaves mostly long, 5-12 {in reduced specimens rarely 4.5) cm. in length. 



{Large specimens of no. 7 might be looked for here.) 

 = Heads comparatively small, the involucre averaging 7 (6-8) mm. high; sterna 



slender. 



3. A. plantaginif51ia (L.) Richards. (Plantain-leaved E.) Stems 1-5 



976. A. Pailiiii 



May-July. 



A. canadensis. 

 Fig. 977. 



