46 COMPOSITE. 



Leaves not ciliate at the margin 5. 



4. Leaves ciliate at the margin, "but glabrous on both sides... 3. A. Oldhami. 

 Leaves hirsute on both sides 4. A. omeropliyllus. 



5. Pappus reddish, stronger than in the following species... 5. A. rufopappus. 

 Pappus brownish 6. A. batakensis. 



6. Involucral bracts 1-2-seriate, nearly equal 7. A. rtiorrisonensis. 



Involucral bracts 3-4-seriate, very unequal 7. 



7. Leaves oblong scabrous gradually passing into bract-like small leaves in the 



inflorescence, pappus-hairs stronger than in the other species 



8. A, baccharoides. 



Leaves various villose or glabrous, scabrous or smooth ; inflorescence with- 

 out bract-like small leaves. Pappus different from the preceding species 

 in the anatomical characters 8. 



8. Branches and leaves all brownish villose 9. A. lasioctada. 



Branches and leaves not villose 9. 



9. Leaves very scabrous ; cymes terminal, much contracted ; heads nearly 



clustered 10. A. scaberrimus. 



Leaves glabrous or slightly hairy, sometimes slightly scabrous ; cymes 



usually expanded , 11. A. trineruius. 



(Branches scandent or hanging ....12. var. scandens.} 



1. Aster indicus Lixx.; HAYATA I.e. p. 37. 



2. Aster formosana HAYATA sp. nov. Caulis GO-SO cm. longus subglaber. 

 Folia triangulari-ovata 14 cm. longa 9 cm. lata apice cuspidato-acuminata basi 

 leviter cordata vel truncato-cordata margine grosse dentata, dentibus triangula- 

 ribus apice setulosis, basi et cuspide Integra, utraque pagine glabra subtus 

 pallidissirna, petiolis 7 cm. longis. Capitula paniculata, paniculis 14 cm. longis 

 9-10 cm. latis, capitula curn fl. marginalibus 1 cm. in diametro, bracteis in- 

 volucri 2-seriatim dispositis, interioribus Hnearibus 4^ mm. longis 1 mm. latis 

 apice obtusis. FL Q : marginales liguliformes 1-seriatim dispositi ; ovarium 

 hirsuturn ; pappi setae copiosaa 2-3 mm. longaa ; corollas tubo 2 mm. longo, limbo 

 liguliformi lineari 5| mm. longo 1 mm. lato apice obtuso basi attenuato. 

 Fl. disci 3j : corollas tubo 2-3 mm. longo extus breve hirsute, limbo fere 

 5-partito, partibus linearibus 3J mm. longis -^ mm. latis valde recurvis 1 . 



