386 BURMA, ITS PEOPLE AND PRODCCTIOXS. 



f f Flower-heads separate, solitary, corymbose or panicled, rarely clustered. 

 ° Pappus of a few rigid bristles or scales, or none. 



Epaxtes, Cassiiii. 



Imolucral bracts rigid. Anthers ■with simple tails. Pappus of tliG female florets 

 none, of the disk-florets small. 



E. (Ethuiia) DrrAKicATA, L. Promc HiUs. 



£. Unearifolia and pygmaa, D.C. 



° ° Pappus consisting of copious capillary soft bridles or hairs. 

 Blumea, Be Candolle. 



Flower-heads racemose, spiked or panicled. Style of the disk-florets all 2-cleft. 

 Imolucral bracts narrow-linear, herbaceous or thin scarious. Herbs, rarely shrubs. 



* Cauline leaves not decurrcnt on the branches. Florets golden to pale yellow 

 {except in the ivhite or blue-flowered B. Wightiana) {AptereB). 



X Flower-heads on long peduncles arising singly from the axils of the haves, or 

 rarely appearing compound from the reduction of the leaves. 



B. AiiPLECTENs, D.C. In rubbishy spots, Chittagong. Introduced 



B. arenaria and tenella, D.C. into the Andamans. 



Conyza amplexicaulis, LamU. 



Shrubby annual. Leaves small, sessile, -with broad base and almost half-stem- 

 clasping. Involucral bracts narrowed into filiform tails. Peduncles almost glabrous. 



B. BiFOLiATA, D.C. Chittagong. Pegu. 



B. anagallidifolia and oligocephala, D.C. 

 Conyza humifusa, Mi(|. 



Low perennial, branched and ascending from the base, thinly pubescent. 

 Peduncles spi'eadingly pubescent. Involucral bracts very acute. Leaves rather 

 large, sessile, with a rounded base. 



X X Flower-heads in pianicles, racemes, or densely pached into shorter or lunger 

 spihes. 



-\- Serratures or teeth of the leaves spiny, indurated at their tips. 



B. oxTODONTA, D.C. "Waste spots in the deltas of the Tsittoung and Irrawaddy. 

 Conyza spinidois, Miq. 



Spreading perennial, branched from the base and procumbent, sparingly pilose. 

 Leaves small, the serratures few and coarse. Flower-heads few, forming irregular 

 depauperate panicles. 



B. spiNELLOsA, D.C. Piome. 



Erect, simple or branched annual, more or less appressed silky-pilose ; leaves 

 rather large, doubled-spiny- serrulate. Flower-heads in regular panicles. 



De Candolle's B. spinellosa seems to be a spiny-toothed form of tlio silvery silk- 

 liairy form of B. hieracifulia ; Clarke's is near B. lacera (with slender peduncles), or 

 near B. barbafa ? (Kurz). 



-| — |- Serratures or teeth (f the leaves various, but never spiny-indurated. 

 f Herbs, or biennials, simple or branched from the base, and more or less villous, 

 pubescent, or v iscid-puberulous , rarely almost glabrous. 



° Flower-heads irregularly disposed and more or less pcdunclcd, forming panicles, or 

 rarely the panicle contracted. 



A Receptacle glabrous. 

 X Florets blue to violet, rarely bluish-white. 

 B. WiGHTiAXA, D.C. All over Burma and introduced into the Andamans. 



B. trichophora aud hymenophylla, D.C. 



