winged); pappus of a number of small pointed scales or broad bristles plus 2 

 (in ray flowers 3) longer awns over the wings of the achene. 



About 7 species occur in North America; one in eastern Asia. 



1. Phyllaries 0.5-1 mm. broad; rays 8-15 mm. long, lilac 1. B. asteroides. 



1. Phyllaries 0.2-0.5 mm. broad; rays 5-8 mm. long, usually pure-white when 

 fresh 2. B. diffusa. 



1. BoUonia asteroides (L.) L'Her. 



Characters as in the key. B. latisquama Gray. Rare in low meadows, wet 

 prairies, edge of ditches and streams, in Okla. (Ottawa Co.) and in e. and s.e. 

 Tex., summer-fall; most of e. U.S. 



2. Boltonia diffusa Ell. 



Characters as in the key. Infrequent in low moist ground, swampy thickets, 

 wet woods, in Okla. (Waterfall) and e. and s.e. Tex., summer-fall; Ga. and Gulf 

 States, n. to Ky., 111. and Mo. 



16. Egletes Cass. 

 A tropical American genus of about 10 species. 



1. Egletes viscosa (L.) Less. 



Taprooted herb, probably annual; stems subslmple on small plants or bushy 

 branched on larger ones, erect or ascending, 12-60 cm. tall, terete, striate, hispid 

 with widely spreading flat-jointed hairs 1-3 mm. long and pubescent with short 

 widely spreading glandular-capitate hairs 0.1-0.5 mm. long, very densely so in 

 the upper part and on the branches; leaves alternate, simple, the stem leaves 

 usually withering before flowering is over, oblong to obovate, 4-1 1 cm. long, 2-6 

 cm. broad, shallowly to deeply pinnatisect or bipinnatisect, the divisions coarsely 

 toothed, the lower ones with narrow clasping subpetiolar bases a third the total 

 length; leaves of upper branches smaller, relatively narrower, less deeply divided, 

 the basal third often entire; upper branchlets or peduncles short, to 2 dm. long, 

 shorter than the small leaves in whose axils they arise; heads rather numerous and 

 crowded toward the tips of the branches; involucre urn-shaped; phyllaries equal 

 or slightly unequal, in 2 or 3 series, 0.8-1.6 mm. broad, lanceolate to ovate- 

 lanceolate, acute, hispid, glandular-pubescent; receptacle conical, naked; ray 

 flowers in one series, 18 to 28, usually shorter or only slightly longer than the 

 phyllaries; rays white, oblong-elliptic, erect, 1.6-2 mm. long, 0.6-0.8 mm. broad; 

 disk flowers perfect; corolla yellow, tubular-funnelform, the limb 4- or 5-lobed; 

 achenes similar in disk and ray, more or less compressed, 2-ribbed, basally con- 

 stricted, 1.3-1.4 mm. long, glandular-pubescent, with a narrow uneven cartilagin- 

 ous ring around the summit representing the pappus. 



Rare in loamy soils at the edges of resacas and lakes on the Rio Grande Delta 

 in Cameron and Hidalgo cos. of extreme s. Tex., summer-fall; Tex., s.e. to C.R.; 

 Cuba. 



We have the f. bipinnatifida Shinners, characterized by its bipinnatifid leaves 

 having acute dentate lobes. The species is also represented by another variety in 

 Sinaloa. 



17. Gnaphalium L. Cudweed. Everlasting 



Usually floccose-woolly taprooted annual herbs or rarely weak perennials; leaves 

 alternate, sessile, often decurrent; heads cymosely clustered or in dense glomerules 

 at the top; receptacle naked, essentially flat; phyllaries in several series, subequal 

 or more strongly graduated, nearly totally scarious but usually with a green 

 semirigid midnerve; ray flowers absent; disk flowers numerous, all fertile but 



1631 



