378 DUHMA, ITS rEOriE A XI) mODUCTIOXS. 



T. rEOCCiiBEXS, L. A weed in C'hittagnnp:, Aliyah and Tfangoon, 



but not yet spread over the interior. 



-|--|- rap2)us consiifivfl of milij 1-4 hrixth/ atrnn, or cyathiform, or absent. 

 X Corolla of all ilie foirers deciduous. 

 f Aehenes more or less compressed from the top. rtippiis of 2 {/areli/ 4) Iristles, 

 or }w)ie, 



'I Inrolucral Iracfs distinct, almost equal, the outer ones Jierbaceous, the inner almost 

 conform to the scales oj the receptacle. 



Stnedrella, Gaertner. 

 Rny -florets fertile. Aehenes almost flat, lacerate-winged, crowned with 2-3 awns. 

 Herbs, leaves opposite. Flower-heads sessile or pedimcled. 



S. (Veebesina) xodifloea, L. Arakan, Manlmain and the Andanians, where 



introduced and spreading. Kaniorta. 



X t Tn'olucral hracts in 2 rows, the inner ones memlranous, often connate at the base 

 or higher up, the outer ones small or minute. 



§ Stijle-branches truncate, jJenicellate or orcrtnppcd by a short appendage. 

 BiDENS, Linnecns. 

 Bay-florets sterile, rarely fertile or none. Inrolucral bracts free or connate at 

 the base." Style-branches terminating in a short acute or shortly subulate appendage. 

 Aehenes not beaked, crowned with 2-4 stiff awns, finally minutely retrorscly bearded 

 or aculeate. Leaves opposite, simple to pinnatiscct. 

 Sub-genus Psilocaep^a. 

 Aehenes slender, 4-comered. 



B. riLosA, L. Hills Noi-th of Ava and East of Toung-ngoo 

 /.'. leueantha, Willd. at 2000 to 4000 feet. 



B. sundaica, Bl. 

 Leaves mostly pinnately 4-3-foliolatc. Eay-florets white. 

 B i!irixN-ATA, L. Tavoy. 



B. TTallichii, B.C. 

 Leaves mostly bipinnate. Eay yellow. Slender dry herb. 



Cosiios, Carauilles. 



Bai/-florcts sterile, often rose-coloured or violet. Aehenes more or less beaked. 

 Best as in Bidens. Leaves opposite, simple to pinnatiscct. 



C. CArDATUs, Hum. Bon. and Kun. "Waste spots near Rangoon. 

 Florets all purple to rose-coloured. Aehenes long and slenderly beaked, the 



beak terminated by 2 stiff awn-like bristles. 



C. SULFUREFS, Cav. "Wastc spots near Akyab and Eangoon. 



Coreopsis artemisiafolia, Jacq. 

 Adenolepis caka, Schultz. 



Florets all yellow. Aehenes long, but thickly beaked, the beak without pappus- 

 bristles. 



I am not at all sure whether the above synonymy is coiTcct. The same plant 

 {Adenolepis eaha) has become quite a nuisance about Buitcnzorg and other places 

 in Java, entering freely the hill-savannahs (Kurz). 



f t Aehenes all thich, or those of the ray triquetrous, those of the dish laterally 

 compres.%ed. Pappus eyathimorph or of 2-3 stiff chaffy or bristly awns, with or without 

 intermediate scalelets or none ( Verbesinece). 



I hiner inrolucral bracts {or outer scales of the receptacle) embracing or enveloping 

 the aehenes of the fertile ray -florets. Bappus none, or of minute free scales. 



