Sjyilanthea.] LXV. COMPOSITiE. 863 



in size. Scales of the receptacle broad and concave, as long as the disk-florets. 

 Bristles of the pappus scarcely thicker and but little longer than the cilia of the 

 angles of the achenes. — S. macroglossa, F. v. M. Fragm. v. 63. 



Hab.: Thirsty Sound and Broadsound, R. Brown; Burdekin Eiver, F. v. Mueller; Eook- 

 hampton, Dallachy ; Keppel Bay, Thozet ; Brisbane Eiver, Moreton Bay, Mossman, F. v. 

 Mueller ; Stanthorpe. 



Var. calva. More glabrous; aohenes smaller with tew or no cilia on the angles, and the 

 bristles of the pappus very minute or entirely wanting. Hab.: Brisbane Eiver and Moreton Bay. 



2. S. anactina (ray-florets wanting), F. v. M. Fragw. v. 63 ; Benth. FL 

 Austr. iii. 441. Stems from a procumbent or decumbent base ascending to about 

 1ft. high, simple or branched. Leaves linear or oblong-lanceolate, obtuse, 

 entire, rather thick, 1 to 2 or rarely Sin. long. Involucral bracts broad and 

 thin, the margins often scarious and jagged. Scales of the receptacle broad. 

 Eay- florets entirely wanting. Disk-florets short and broad. Style -branches 

 very long, flat, truncate. Achenes acutely edged or winged without cilia, the 

 awns rather long for the genus. 



Hab.; Islands of the Gulf of Carpentaria, R. Brown, Henve. 



60. -COREOPSIS, Linn. 



(Said to have received its name from the supposed resemblance of 

 the achenes to a bug.) 



Heads heterogamous, radiate ; ray-florets 1 -seriate, conspicuous, female or 

 neuter. Involucre duplex, outer bracts more or less herbaceous, linear or 

 linear-lanceolate ; inner membranous, sub-equal, 1 or 2-seriate, broader than the 

 outer ; bracts sometimes appearing more or less connate at base. Scales of 

 receptacle plane or slightly concave, membranous, striate. Anther-base entire 

 or bidentate. Style-branches truncate or with an abrupt subulate appendix. 

 Achenes usually much compressed, linear-oblong or obovate ; margins some- 

 times winged, apex with 2 filiform subulate or broad-based aristsB, usually 

 barbellate with setse directed upwards. — Herbs, or more or less frutescent, with 

 opposite often pinnatisect or deeply divided simple leaves, and pedunculate, 

 solitary, or variously cymose, yellow, conspicuous flower-heads. 



Annual or perennial herbs of North America. 



1. C. tinctoria (dyed), Nutt; Jl. Ac. Phil. ii. Annual, stems branching, 

 1 to 3ft. high, glabrous. Leaves pinnately divided into narrow, linear segments. 

 Peduncles terminal. Eay-florets toothed at the end. Achenes oblong, minutely 

 tuberculate or smooth. A well-known showy garden annual. 



Hab.: North America. Met with about towns as a stray from garden culture. 



61. ■COSMOS, Cav. 

 (From kosmos, an ornament). 



Heads heterogamous, radiate ; ray-florets 1-seriate, neutral ; disk-florets 

 hermaphrodite, fertile, or rarely wanting, rays homogamous. Involucre sub- 

 hemispherical ; bracts 2-seriate, connate at the base, striate. Eeceptacle flat, 

 scales somewhat flat or concave, hermaphrodite florets subdentate. Eay- 

 florets ligulate, lamina spreading entire or subdentate ; hermaphrodite, regular, 

 tubulose, limb oyclindrio, shortly 5ft. at the apex. Anthers entire at the base or 

 scarcely 2-dentate. Style of hermaphrodite florets with thin branches. Aohenes 

 narrow, sub-5-angled ; awns 2 to 4-barbed or scabrous-hispid, deciduous. Eay- 

 florets purple, violet, or rose ; disk-florets yellow ; anthers brown, 



Tropical American herbs, chiefly^Mexican , 



