Flavkria. composite. 361 



glabrous or slightly pubescent ; leaves sessile, connate, narrowly linear, en- 

 lire, nearly nerveless, somewhat fleshy; heads in compound crowded co- 

 rymbs ; ray single or often wanting. — Lag. nov. gen. 6fc. p. 33 ; DC. I. c. 

 F. maritima, H. B. &;■ K. ! nov. gen. Sf spec. 4. p. 285. F. tenuifolia, 

 Nutt. ! in jour. acad. Pliilad. 7. p>- 81. Selloa nudata, Nutt. ! in Sill. jour. 

 5. p. 300 ,• and therefore Gymnosperma nudatum, DC. prodr. 5. p. 312. 



East Florida, Mr. Ware! Mr. Peale! Key West, Mr. Bennett! Mr. 

 Blodgett! — A maritime species, also a native of Cuba. 



Subtribe 4. Tagetine.c, Cass. — Heads many-flowered, either heteroga- 

 mous, with the ray-flowers pistillate and mostly ligulate, or homogamous 

 and discoid. Involucre either in a single series, the scales more or less 

 united ; or in several series, the exterior scales bracteiform and distinct, the 

 inner more or less united. Branches of the style terminated by a cone or a 

 subulate appendage. Receptacle naked, flat. Achenia striate, attenuate at 

 the base. Pappus composed of awns, squamellffi, or bristles. — Herbs, 

 marked with large glandular pellucid dots, and therefore commonly odorous. 

 Leaves opposite or alternate. 



113. DYSODIA. " (Dyssodia) Cav. in ann. sci. nat. 6. (1802) p. 334" ; 

 DC. prodr. 5. p. 639. 



Heads radiate or sometimes discoid ; the rays ligulate, pistillate. Scales 

 of the proper involucre in a single series and more or less united, usually 

 subtended by an outer series of bracts. Receptacle somewhat alveolate or 

 hirsute-fimbrillate. Corolla of the disk regularly 5-toothed. Branches of 

 the style terminated by a somewhat pubescent cone. Achenia elongated, 

 4-angled and somewhat compressed. Pappus a single series of chaffy scales, 

 which are pinnately or palmately laciniated or cleft into scabrous bristles, so 

 as to appear like a polyadelphous pappus ! — Mostly annual branching 

 (chiefly Mexican) herbs, with the habit of Tagetes. Leaves opposite or al- 

 ternate, commonly pinnately parted or toothed, the teeth mucrouate-setige- 

 rous. Heads terminating the paniculate or corymbose branchlels. Flowers 

 yellow or orange. 



§ Receptacle somewhat alveolate^ slightly fimhrillate, or naTced : involucre 

 hracteolate; the bracts entire or laciniate-pinnatijid. — B(ebera, Willd, 

 (1803.) (Dysodia § Boebera & Bceberoides, DC.) 



1. D. tagetoides : glabrous; stems corymbose at the summit; leaves al- 

 ternate or rarely opposite, narrowly linear, spinulose-toothed ; scales of the 

 cylindrical-oblong involucre united nearly to the summit, longer than the 

 spinulose-toothed or sparingly pinnatifid involucrate bracts; rays numerous 

 (10 or more), exserted ; achenia glabrous ; pappus much shorter than the 

 corolla ; the scales linear-subulate, sparingly laciniate, or sometimes nearly 

 entire. 



Texas, Drummond! Western Louisiana or Arkansas, Dr. Leavenivorth ! 

 — 11 1 Stem erect, often branching at the base, about a foot high. Leaves 

 2 inches long, only a line wide, pinnately laciniate with spinulose teeth. In- 

 VOL. II. — 46 



