Chrysopsis. composite. 257 



Pine woods and open barrens, Arkansas, Nultall! Dr. Pitcher! Lou- 

 isiana, Dr. Leavenworth! Dr. Hale! Dr. Carpenter! Texas, Drummond! 

 July-Sept. — Stem 1-2 feet, high. Heads smaller than in C. villosa, with 

 numerous elongated rays. Appendages of the style elongated-subulate, more 

 than twice the length of the stigmatic portion. Inner pappus brownish ; the 

 exterior whitish, the scales linear-oblong, about one-third the length of the 

 achenium, slightly denticulate, firm. — The lower leaves are sometimes laci- 

 niate-toolhed or incised. 



Subtribe Baccharide^, Less. — Heads discoid, never radiate, dioecious or 

 monoecious; the fertile flowers mostly filiform and truncate, and when monoe- 

 cious in several series, with the sterile flowers in the centre. Receptacle not 

 chaffy. Anthers not caudate at the base. — Leaves alternate. 



56. CONYZA. Linn. (excl. spec.) ; Less. syn. p. 203. 



Heads many-flowered, monoecious ; the exterior pistillate and fertile, in 

 many series, with a filiform truncate or 2-3-toothed corolla; a few of the cen- 

 tral flowers staminate, sterile, but often styliferous or even fertile, with a 

 tubular 5-toothed corolla. Scales of the involucre in several series. Recep- 

 tacle flat or convex, punctate or fimbrillate. Achenia compressed, attenuate 

 at the base, usually glabrous. Pappus a single series of capillary scarcely 

 scabrous bristles. — Chiefly tropical herbs, with branching stems, and vari- 

 ously incised leaves. Heads peduncled, corymbose or paniculate. Flowers 

 yellow. 



1. C. sinuata {YA\.) : annual? hairy, somewhat scabrous; lower leaves 

 sinuate ; the lobes oval, acute ; the upper linear, entire ; heads paniculate ; 

 scales of the involucre linear-subulate ; flowers white, all fertile ; achenia 

 oblong, angled, hairy. Ell. sk. 2. p. 378. 



Around Charleston, S. Carolina, very common. April-July. — The plant 

 scarcely appears to be a native, and has the habit and appearance of an Eri- 

 geron. Elliott. — This plant is entirely unknown to us and is probably not 

 indigenous. It appears to belong to Conyza sect. Dimorphanthes, the Amer- 

 ican species of which frequently have the central flowers perfect and fertile. 



C. Chiknsis, Spreng. According to De CandoUe, a specimen of this plant in 

 Heenke's collection is said to have been obtained at Mulgrave Sound on the Pacific 

 coast ; but there is doubtless some mistake as to the ascribed habitat of this and 

 many other of Haenke's plants. 



57. BACCHARIS. Linn.; Michx.fl. 2. p. 125,- DC. prodr. 5. p. 398. 



Heads many-flowered, dioecious; the flowers all tubular and similar. In- 

 volucre somewhat hemispherical or oblong ; the scales imbricated in several 

 series. Receptacle naked, or rarely somewhat chaffy. Corolla in the sterile 

 flowers somewhat dilated and 5-cleft at the summit ; in the fertile filiform, 

 somewhat truncate. Anthers exserted in the sterile flowers ; entirely absent 

 in the fertile. Style in fertile flowers exserted ; the branches glabrous ; in 

 the sterile tipped with an ovate hairy appendage, often more or less abortive. 

 Achenia ribbed or grooved. Pappus capillary ; of the sterile plant in a sin- 

 VOL. II. — 33 



