(OMI'DSIT.K. . 377 



conilla, tlio aiitlicis linear and uniti'il iti a tul)o round ihu style (except in Xunthium), 

 2-eelleil, opeuinj; inwards liy lonj;itudinal slits, the basal lobes sometimes prolonged 

 into short or lon<; tine hair-like points ealled tails, the connective usually produced 

 at the top into a small erect appendage. Ocrt/v/ inferior, with a solitary erect ovule. 

 Style iilit'orm, usually with 2 short stigmatic lobes. Fruit a dry nut or achene, 

 crowned by the pappus, or naked. Seed erect, without albumen. IJmbrijo straight 

 or rarely curved. Jladide inferior. Herbs or shrubs, sometimes scandent, rarely 

 trees. Leaves alternate or opposite. Stipules none. Flower-heads terminal or rarely 

 axillary, solitary, or in panicles or corymbs, sometimes reduced to clusters or heads. 



Sub-order ASTERACE^. 



Florets all tubular or bilabiate, or more usually the outer ones ligulate and 

 forming a ray. Stijle-hranches in the female florets always filiform, those of the 

 hermaphrodites variously shaped (in the sterile florets sometimes the style simple). 

 Herbs, shrubs, or rarely trees ; the sap usually watery, never milky. 



CORYMB I FERIE.T,. 



Florets all tuhular, or more usualli/ the mariiinal ones liijulate and forming a ray. 

 Style not thickened, joint-like at or near the apex. Ucrhs, shnihs, or trees, usually aromatic. 



* Flower-heads heteroyamous, radiate or discoid, the hermnphrodite or male Jlorets 

 tuhular, and the female ones liyulate or filiform {or rarely the heads homoyamous in absence 

 of the ra //-florets). 



+ Anthers free or nearly so. Female flowers all apctalous. Flower-heads uni- 

 sexual, rarely heteroyamous. 



Sub-tribe AMBROSIE-T:. 

 Style of herniaplirodite florets undivided. Anthers infle.ved-aj>j)endayed. Fapjjus 

 none. Jjcaves alternate. 



X.ixxnivir, Linncvus. 



Male flnrefs numerous, in globular heads, the involucre small, consisting of free 

 bracts in a single row. Female Jlorets 2 together, consolidated with the involucre into 

 a prickly burr. 



X. sTErjlABirii, L. Kubbishy spots all over Burma. 



X. Indicuni, Roxb. 



X. Ro.cbu} ghii, discolor, and hrevirostre, Waller. 

 JV. inaquilaterum, D.C. 

 -|--|- Anthers always united into a tube. Style-branches truncate or append'iyed. 

 X Pappus of short stiff awns or scales, or reduced to a raised border or none at all. 

 Anther-cells not tailed at the base. {Genera with a similar or no pappus, not included 

 here, should be souyht for in the next division with capillary bristles.) 



Sub-tribe nEM.\.\TnolI)IE.i;. 

 Flowers either heteroyamous, with the female florets more or less liyulate, the central 

 ones tubular hermaphrodite or male, or rarely discoid, with all the fonts hermaphrodite 

 and tubular. lieceptacles with chaffy scales between the Jlorets, or rarely {in Helen ioidea) 

 naked. Anthers without tails. Style-branches truncate and penicellate, or appcndiculate, 

 or the style of the sterile /lowers undivided. Pappus of stijfawns or of short scales or noiie. 

 Achenes 3-i-yonous, terete, or more usually variously compressed. Leaves opposite or 

 rarely alternate. 



* Receptacle paleaceous. 



-\- Pappus consist iny of numerous scales, rarely awn-shaped {or none). 



TiuDAX, Linnaus. 



Flower-heads radiate. Lnvolucral bracts in 2 rows, membranous, or the outer ones 

 herbaceous. Scales of pappus feathery-fringed. Herbs, leaves opposite. Jteccptacle 

 flat or nearly so. 



