IGl S. Kurz — Contrihutions towards a [No. 2, 



X Involucral bracts distinct, almost equal, the outer ones 



herbaceous, the inner almost conform to the scales of 



the receptacle. 



GuizoTiA. Eay-florets fertile. Achenes small, almost 4 -cornered, without pappus, 



but crowned with the densely pilose corolla-base. Flower-heads peduncled. Leaves 



opposite, or the upper ones alternate. 



Synedrella. Eay-florets fertile. Achenes almost flat, lacerate-winged, crowned 

 with 2 — 3 awns. Herbs, leaves opposite. FloAver-heads sessile or peduncled. 



X X Involucral bracts in 2 rows, the inner ones membra- 

 nous, often connate at the base or higher up, the outer 

 ones small or minute. 



§ Style-branches truncate, penicellate or overtopped 



by a short appendage. 



Coreopsis. Eay-florets sterile or rarely fertile or none. Style-branches penicil- 



late or truncate, with a short or obsolete appendage. Achenes flat, ciliate, or winged, 



rarely contracted at the top, nude or more usually terminated by 2 short awns. 



Leaves opposite or alternate, single to pinnatisect. 



Dahlia. Eay-florets sterile, rarely fertile. Style-branches terminating in an 

 elongate hairy appendage. Achenes flat, wingless, naked. Leaves opposite, pinnate. 



BiDENS. Eay-florets sterile, rarely fertile or none. Involucral bracts free or con- 

 nate only at the base. Style-branches terminating in a short acute or shortly subulate 

 appendage. Achenes not beaked, crowned with 2 — 4 stifi" awns finally minutely re- 

 trorsely bearded or aculeate. Leaves opposite, simple to pinnatisect. 



Cosmos. Eay-florets sterile, often rose-coloured or violet. Achenes more or less 

 beaked. Eest as in Bidens. Leaves opposite, simple to pinnatisect. 



GrLOSSocARDiA. Eay-florcts fertile, usually solitary. Achenes narrow, flat, long- 

 ciliate, crowned with 2 stifi" smooth awns recurved afterwards. Leaves alternate, pin- 

 natisect. 



§ § Style-branches terminating in a long, shortly hairy 

 appendage. 

 Glossogyne. Eay-fiorets fertile. Achenes long, crowned with 2 or 3 stifi" persis- 

 tent awns. Leaves mostly radical, dissect to 3-toothed, the cauline ones few and small. 

 Chrysanthbllum. Eay-florets fertile. Achenes naked, those of the disk compres- 

 sed with the inner ones often winged, those of the ray thick. Leaves alternate, dissect. 

 t t Achenes all thick, or those of the ray triquetrous, those of 

 the disk laterally compressed. Pappus cyathimorph or of 

 2 — 3 stiff chaffy or bristly awns, with or without interme- 

 diate scalelets, or none {Verbesinece). 



X Inner involucral bracts (or outer scales of the receptacle) 

 embracing or enveloping the achenes of the fertile ray- 

 florets. Pappus none or of minute'free scales. 

 Enhydra. Involucre of 4 broad leafy bracts, the 2 outer larger than the 2 inner. 

 Eay-florets in several rows, with very small ligules. Pappus none. Aquatic herbs, 

 with simple opposite leaves. Flower-heads axillary, sessile or nearly so. 



SiEGESBECKiA. Outcr iuvolucral bracts leafy, narrow, spreading, gland-hairy, the, 

 inner ones and the receptacle-scales enveloping the florets. Eay-florets in a single row 

 with small ligules or almost bell-shaped. Pappus none. Herbs with opposite leaves. 

 Flower-heads panicled. 



X X Inner involucral bracts all flat. 



