COMPOSITE:. 



73 



longis apice acuminatis dorso hirsutis. El. ignoti. Achamiimi rnaturum ferru- 



gineo-fulvum fusiforme 4-5 mm. longum 



a 1 mm. vel minus quam 1 mm. latum apice 



plus minus rostratum basi obtusum minute 

 transverse elevato-striatuni vel rugulosum 

 oo-costatum ; pappi setae copiosre 6 mm. 

 longne albae plumosae. 



Pier is hieracioides HAYATA Fl. Mont. 

 Formos. p. 143 (non LINN.). 



HAP,. Monte Morrison, leg. U. MORI. 

 Differs from P. hieracioides LINN, by the 

 much narrower leaves. 



Pig. 29, Picrls angustifolm HAYATA ; 

 a, a portion of a pappus-hair ; b, an 

 achene. 



Tarajcacum HALL. 



Taraxacum platycarpum H. 



DAHLST.; HAYATA 1. c. p. 41. 



Lactuca LINN. 



Key to species. 



1. Outer involucral bracts gradually pass- 

 ing to inner ones in length 2. 



O O 



Outer involucral bracts minute, inner 

 ones very long, no transitional ones between them 6. 



2. Creeping, stoloniferous - 1. L. brachyrhyncha. 



Erect, tall herbs 3. 



3. Perfectly glabrous 4. 



More or less hirsute 5. 



4. Cauline leaves linear 2. L. brevirostris. 



Cauline leaves pinnatifid 3. L. mansuensis. 



5. Cusps at the apex of the leaves linear 4. L. Morii. 



Cusps at the apex of the leaves acuminately triangular .... "). L. formosana. 



<>. Flowers purple, stem 80-100 cm. tall 6. L. sororia. 



