ORDER LXVin. COMPOSITE. 399 



8. L. bkevifo'lta, (Nutt.) Stem glabrous below, pubescent at the 

 summit. Leaves entire ; the lower ones spatulate, upper ones lanceo- 

 late, decurrent. — North Carolina and Alabama. 



6. L. brachypo'da, (T. <fe G.) Stem leafy, pubescent, or glabrous 

 below, corymbose at the summit. Leaves lanceolate, entire or denticu- 

 late, decurrent ; scales of the involucre shorter than the disk. Achenia 

 hairy on the angles. — Yellow. Damp soils. N. Car. and Flor. 1 — 3 feet. 



Genus LXIV.— BALDWIN! A. Nutt. 

 (In honor of Dr. Baldwin.) 



Involucre many-leaved, imbricate, squarrose ; ray florets neu- 

 tral, those of the disk perfect. Receptacle convex, pitted. Seeds 

 immersed in the receptacle. Pappus membranaceous, consist- 

 ing of 10 acute leaves. 



1. B. tjniflo'ra, (Nutt.) Stein simple, slightly angled, pubescent. 

 Leaves obovate, tapering at the base, narrow, entire, pubescent when 

 young ; involucre squarrose, with the leaflets ovate, the interior mucro- 

 nate ; ray florets numerous, pubescent, 3-toothed at the summit. Seed 

 hairy, enlarged toward the summit; pappus consisting of acute, mem- 

 branaceous scales. — Yellow. %. July — Sept. Damp soils. Middle 

 Car. and Geo. 1 — 2 feet. 



Genus LXV.— ACTINOSPER'MUM. Ell. 



(From aktin, a ray, and sperma, a seed.) 



Heads many-flowered; ray florets 8 — 10, neutral; those of 

 the disk perfect. Involucre shorter than the disk ; scales in 2 

 series, somewhat foliaceous. Receptacle with subulate chaff, 

 united together. Achenia turbinate, silky, 12-radiate at the 

 summit. 



1. A. angustifo'lium, (T. & G.) (Baldtvinia multiflora, Nutt.) Stem 

 glabrous, much branched, terete. Leaves linear, glabrous, sessile, alter- 

 nate. Flowers at the extremities of the branches; involucre imbricate, 

 many-leaved, glandular, oval ; ray florets small. Seed enlarged at the 

 summit, pubescent ; pappus with numerous scales, expanding, obtuse. — 

 Yellow. 1£. Sept. — Oct. Middle and Southern Geo. 2 — 3 feet. 



Genus LXVI.— MARSHAL'LIA. Schreb. 

 (In honor of Humphrey Marshall.) 



Involucre imbricate ; florets all perfect, tubular. Receptacle 

 ihaflfy. Pappus consisting of 5 membranaceous scales. 



1. M. latifo'lta, (Pursh.) Stem leafy, branched above, glabrous. 

 Leaves sessile, ovate-lanceolate ; involucre with acute, rigid scales ; pap- 

 pus tawny. — Purple. May — June. Mountains. 1 foot. 



2. M. lanceola'ta, (Pursh.) Stem erect, simple, striate, pubescent 

 toward the summit. Radical leaves obovate ; cauline ones lanceolate, 

 all glabrous, entire, attenuate at the base, dilated at the stem, and 

 clasping it Flowers terminal ; involucre many-leaved, with membra- 



