232 COMPOSITE. Bigelovia, 



B. nudata (DC! 1. c.) — Chrysocoma nudata, Michx. ! fl. 2. p. 101; 

 Pursh! fl. 2. ]}. 517 ; Ell. ! sk. 2. p. 309. 



a. spathulfsfolia : radical and lower leaves oblanceolate, 1- or obscurely 

 3-nerved, tapering into an attenuated base; the cauline ones scattered, often 

 very few, linear. — B. nudata, DC! I. c, Sf mem. comp. t. 5. Chrysocoma 

 nudata, Nult. gen. 2. p. 137. 



/3. virgata : earliest radical leaves linear-spatulate ; the others, and the 

 (often more numerous) cauline ones narrowly linear, 1-nerved. — B. virgata, 

 DC! I. c. Chrysocoma virgata, Nutt. I. c. 



Borders of swamps, and low pine barrens, Nevv Jersey (Nuttall) and Vir- 

 ginia ! to Florida ! Alabama ! Louisiana ! and Texas ! Aug.-Oct. — Stems 

 1-2 feet high, slender. Lower leaves 2-3 inches long; the uppermost very 

 short, scattered. Scales of the involucre 1-nerved, with somewhat greenish 

 tips. — The habit is much that of the section Euthamia in Solidago, but the 

 stems are less inclined to branch. The B. virgata appears to be only a nar- 

 row-leaved state of the ordinary plant ; but it may, perhaps, be a distinct 

 species. 



41. LINOSYRIS. Lobel ; DC prodr. 5. p. 351, (& Bigelowia § 2. DC) 



Linosyris & Crinitaria, Cass. — Chiysothamnus, Nutt. 



Heads 5-many-flowered ; the flowers all perfect and tubular. Involucre 

 campanulate, obovoid, or oblong, often shorter than the disk ; the scales im- 

 bricated, mostly concave or carinate, destitute of herbaceous tips ; the exte- 

 rior usually looser and bracteolate, passing into the leaves. Receptacle flat, 

 alveolate-toothed ; the teeth fleshy or somewhat lacerate. Corolla with an ex- 

 panding 5-cleft or 5-parted limb. Branches of the style with flat linear or 

 oblong stigmatic portions ; the pubescent appendages various in form. Ache- 

 nia oblong, somewhat compressed, silky-villous. Pappus simple, of copious 

 scabrous capillary bristles. — Perennial herbs or sufTruticose plants (natives 

 chiefly of Southern Europe, Northern Asia, and North America west of the 

 Mississippi), branched from the base, and bearing corymbose heads at the 

 summit. Leaves alternate, crowded, sessile, linear or oblong, mostly entire, 

 and 1-nerved. Flowers yellow. 



§ 1. Involucre 20-30-flowered, as long as the disk. 



1. L. Texana: suffrutescent at the base, glabrous, not glutinous; stems 

 and numerous branches strongly striate-angled ; leaves linear, carinately 1- 

 nerved, rather rigid ; scales of the hemispherical involucre lanceolate, acute, 

 loosely imbricated in 2 or 3 series ; lobes of the deeply parted limb of the 

 corolla lanceolate-linear, as long as the tube ; appendages of the style lance- 

 olate, thicker than the stigmatic portion, and about its length ; pappus as long 

 as the flowers. 



Texas, Drummond ! Dr. Rid dell ! — Stems 1-2 feet high, much branched 

 at the summit. Leaves 1-2 inches long, less than 2 lines wide, acute, some- 

 times with 2 slight undulate lateral nerves, and very minutely and obscurely 

 dotted. Heads all more or less pedicellate, with few bracteal leaves. Scales 

 of the involucre smooth, not rigid, strongly 1-nerved, with slight scarious mar- 

 gins, obscurely ciliate near the apex. Receptacle alveolate-toothed ; the 

 teeth somewhat fleshy. Pappus not very copious, very soft and slender. 

 Achenia unknown. 



