388 BURMA, ITS PEOPLE AXD PBODUCTIOSS. 



B. (Conyza) fistulosa, Roxb. var. «, /i, y, all over Burma, up to 4000 feet ; 



var. c on laterito in Martabuu, and rare iu 

 Prome, up to 3000 feet. 



Erect, simple or branched annual, sliglitly or rarely densely pubescent or pilose, 

 the cauliue leaves narrow and simple. Flower- heads about 3 lines loui;, often pilose 

 or almost woolly. 



var. a fascicuJata, D.C. {B. fistulosa, Eoxb.). Spikes more or less paniclcd. 

 Receptacle tawny velvety, the velvet sometimes intermixed with a few white soft hairs. 



var. fi racemosa, Clarke. Spikes almost simple or little branched, lieceptacles 

 yellowisli velvety. 



var. 7 (jlomeraia, D.C. i^Conyza Burmfann, Miq.). Spikes more or less panieled. 

 Eecoptacles velvety, the velvet intermixed with copious soft white hairs. 



var. ( hithiscricea, D C. More simple, thinly silky pilose, the spikes usually 

 simple, rarely with a few additional basal ones, long-silky-pilose. Eeceptacle shortly 

 white jnlose. 



The above varieties are, with the exception of c, hardly worth keeping up. 

 Benthani refers B. holosericea, D.C, to his B. hierucifolia ; but a scrap of AVallich's 

 authentic specimens shows small sessile heads, indeed represents the ujiper part of the 

 form correctly referred by Mr. Clarke to the above .species (Kurz). 



A A Receptacle gliihrous. F/oiivr-henils more or less 2>eilnneleil to almost sessile, 

 clustered in the leaf-a.cih and foriniiig hafij or leafi/ss contracted spilce-lite panicles or 

 spikes {rarely tlie panicle developed'). 



B. BAEBATA, D.C. var. a Maulmain. var. /i along the Zamayee stream 



of the Pegu range and the Thou-kye-gat. 



Erect slender annual, long silky-pilose, the leaves all cuneate-oblong to linear. 

 Flower-heads silky-pilose, nearly 4 lines long, on longer or shorter slender peduncles 

 or almost ses.sile, clustered in the upper leaf-axils and passing into a leafy spike-like 

 contracted panicle. 



var. a getiuina. Leaves broader or narrower. Flower-heads on slender or short 

 peduncles in a ilitfuse usually long-pilose panicle, or the panicle reduced and raceme- 

 like but laxly contracted. 



var. ft sericans. Leaves more elongate-cuneato to almost linear, appressed silvery 

 pubescent as in B. licera. Flower-lieads larger, almo.st sessile or thickly peduncled, 

 clustered iu the axils of the leaves and gradually passing into terminal dense spikes. 



B. niEUACiFOLiA, D.C. var. a Mergui. var. ft Ava Hills. 



Erect robust annual, villous to silky pubescent, the lower stem-leaves more or 

 less spatulate-oblong or linear. Flower-heads i-} iuch long, on short, thick, woolly- 

 tomentose peduncles or almost sessile, forming dense spikes or spike-like (rarely lax) 

 panicles, often accompanied by clusters of llowei'-heads in the upper leaf-axils. 



var. ri ti/pica, Clarke. Little or not branched except from the base. Flower- 

 heads clustered, forming dense terminal spikes, lladical leaves chiefly developed. 



var. ft erolntior, Clarke. Panicles more or less branched, larger or smaller, 

 lladical leaves none or marcescent. 



A species apparently very variable as to inflorescence and habit, the panieled form 

 a]iproaclnng B. crinita and B. flexuosa (if these be realh* distinct liom one anothcj), 

 while the subscapiferous foruis look somewhat like Unuphalium. B. lacera, var. e 

 siihcapitata, Clarke, is in my eyes the same as Clarke's var. 7 yUayirica of this species. 



f f Erect or scandeni shruhs or under s/irulix, or tall sl>ruh-lil;e biennials. 

 ° Erect shrubs. 

 A Peduncles thick and short, densely toiuentose. Leaves more or hss Villous or 

 touuntose, especially beneath. Beceptacle more or less Ituiry. 



