Jennings: Contribution to Botany of Isle of Pines. 275 



Stigmatic lines extending to the tips of the stigmas or to the appendages. 



Anther-sacs tailed at the base (Tribe IV. Inulea) 



Anther-sacs not tailed at the base. 

 Receptacle naked. 



Bracts of the involucre well imbricated. 



Stigmas of the perfect flowers with terminal appendages. 



(Tribe III. Aslerea) 

 Stigmas of the perfect flowers with truncate or hairy or papillose 



tips (Tribe V. Heleniea) 



. Bracts of the involucre little imbricated, except when broad outer 



ones overlap the inner (Tribe VII. SenecionecB) 



Receptacle chaffy (Tribe VI. Helianthea) 



All flowers, or at least the perfect ones, bilabiate (Tribe VIII. Mutisiece) 



Tribe I. Vernonie^. 



Heads discoid; the flowers all perfect and tubular, never yellow. Branches of 

 the style long, terete, filiform, minutely bristly-hairy all over. Leaves alternate 

 or rarely whorled, never opposite. 

 Heads not condensed into glomerules. 



Pappus consisting of a thickened ring without bristles. 



711. Sparganophorus Vaillantii. 

 Pappus double; with inner hair-like bristles and outer shorter scales or bristles. 



712. Lachnorhiza piloselloides. 

 Heads few-flowered, condensed into glomerules. 



Pappus i-2-serial, of scaly bristles dilated at the base. 



Cauline leaves linear, 2-4 cm. long, i mm. broad, entire. 



714. Elephantopus arenarius. 

 Cauline leaves larger, oblong, somewhat crenate-serrate. 



713. Elephantopus mollis. 



Pappus i-serial, unequal, with several 01 the stouter bristles bent towards the 



summit 715. Distreptus spicalus. 



Tribe II. Eupatorie/E. 



Heads discoid; the flowers all tubular and perfect, never yellow. Branches ol 

 the style thickened upward or club-shaped, uniformly minutely pubescent; stig- 

 matic lines indistinct. 



Anthers without appendages. 716. Phania malricarioides. 



Anthers appendaged. 



Pappus none (abortive) 717. Alomia ageratoides. 



Pappus consisting of a series of nearly free more or less laciniate-tipped scales. 



718. Ageraliitn ynariiitniim. 

 Pappus consisting of hairs or bristles. 



Involucre of more than 4 bracts, 5- (or more) flowered. 



Leaves finely dissected 720. Eupatorium capillifolium. 



Leaves entire or repand-toothed 719. Eupatorium villosum. 



Involucre mostly of 4 bracts, sometimes with an outer short one (Mikania). 



Leaves entire, dentate or incised-lobed 721. Mikania scandens. 



Leaves tripartite up to trifoliate. 



