co.vPosiT.'7:. 387 



Tall herb, reduced and small, more or less viscid-pwliesccnt. Leaves simple and 

 petioled. Flower-licads only 2 lines Ion;;, on shorter and long filiform peduncles, 

 forminj; lax panicles. 



The colour of the florets and the much snudler size of the flower-heads combined 

 with a viscid pubescence ou^ht to remove all difficulties in distinguishing this species 

 from B. lacera, with which Benthani and Thwaites are inclined to combine it. 

 B. hymennphijUa has pale blue or white florets and is certainly nothing but a slender 

 shade-form which I found in all transitional states in company with B. Wiyhtiana, 

 not B. lacera, as Clarke states (Kurz). 



J I Florets all yellnw. Flower-heads in lax panicles. Peduncles slender, allhomjh 

 sometimes very short. Annuals, rarely becoming biennials. 



B. LACERA, D.C. "Waste spots near Akyab and elsewhere. Kamorla. 



Erect, branched from the base, more or less silky-villous, but not viscid, the 

 cauline loaves simple and sessile or nearly so. Flower-heads 3-3 J- lines long, in 

 panicles sometimes pretty contracted but elongate. 



B. GLANDFLosA, D.C. Chittagoug. 



B. lacera, var. ft Heyneana and 7 ylandulosa, Clarke. 



Erect, branchy, thinly viscid-pubescent, the cauline leaves simple and petioled. 

 Flower-heads about 4 lines long, on long slender glandular peduncles, forming lax 

 panicles. 



B. (Coxtza) difftsa, Eoxb. All over Burma and the Andamans. 



B. virens and lapsanoidcs, D.C. 



Erect, branchy, thiidy puberulous, the cauline leaves (except in starved states) 

 almost runcinato and petioled. Flower-heads about 3 linos long, with the involucral 

 bracts green and glabrous, on spreading stiff capillary glabrous or glandular peduncles, 

 in lax panicles. 



B. lactuc^folia, D.C. All over Burma. 



Erect, simple or branched, almost glabrous or u.«ually more or less hirsute, the 

 cauline loaves (especialh' the lower ones) more or less runcinate. Flower-heads nearly 

 4 lines long, with the involucral bracts aud the long slender peduncles pubescent, in 

 lax panicles. 



var. ft sitbsimplex, D.C; B. paucifolia, D.C; A. cuneifolia, D.C. More glabrous 

 and almost simple, the leaves obovale-cuneate and not lobed, but often passing into 

 the runcinate form. 



var. 7 riscusula, Clarke. Densely and shoitly glandular-pubescent, the leaves 

 small and rather rigidly runcinate. 



var. ^ nudipes. Jlore hirsute instead of pubescent. Panicles more scjuarrose. 

 Stem usually naked and destitute of leaves to ^— A feet from the ground. 



Mr. Clarke refers var. e to his B. fasciculafa, but the long peduncled flower-heads 

 and indeed the whole inflorescence arc entindy different (Kurz). 



A A Receptacle hairy. Peduncles slender. 



B. LACiNiATA, D.C I'rome. Meaday. 



B. runcinuta, sunchi/o'ia and cinerascius, D.C. 



Branched or simple annual, shortly or rarely glandular-])ubescent, the cauline 

 leaves usually runcinate. Flower-heads about 3J lines long, longer or shorter 

 peduncled, forming lax leafless panicles. 



° ° Flower-heads clustered in the axils of the upper leaves and passing more or less 

 gradually into a contracted spike-like panicle, or crowded in a dense terminal spike, or the 

 sessile clusters remote and in simple or panicled slender spikes. 



A Receptacle hairy. Flower-heads sessile, dustered, or rarely solitary simple or 

 panicled spikes. 



