Feb. wis.] t. MAKWO.— OBSERVATIONS ON THE FLORA OF JAPAS. 29 



glomerules very closely about 1-6-flowered. Flowers depress- 

 ed, very shortly pedicellate, about Wh aim. in diameter, but 

 some of them smaller aud pistillate. Cal}-x 5— parted ; seg- 

 ments incurved, furfuraceous towards the margins externally, 

 orbicular, herbaceous and green in centre, but broadly hyaline 

 and membranaceous, concave internally, hardly carinate dorsal- 

 ly, 1-nerved. Stamens 5, exserted ; filament subulato-filiform ; 

 anther rounded, yellow. Ovary depressed-globose ; styles 2, 



exserted, shortly connate at the base. Utricle depressed, in- 

 cluded ; embryo transverse. 



Nom. Jap. Hosoba-akaza. 



Hah. JAPAN (Herb. ! T. Makino). 



Lactuca dentata (Thunb.j Makino in Bot. Mag., Tokyo, 

 XXIV. (1910), p. 75. 



«. Tkunbergii Makino. 



Prenanthes dentata Thunb. Fl. Jap. (1781), p. 301. 



Lactuca Thunbergii Maxim, in Mel. Biol. IX. p. 361. 



Lactuca dentata a. flaviffora subvar. Thunbergii Makino, 

 1. c. XXIV. (1910), p. 75. 



Lactuca Thunbergii a. flaviflora Makino, I.e. XII. (1898), 

 p. 48. 



Nom. Jap. Niga-na. 



Hab. JAPAN, common. 



forma partita Makino, nov. 



Leaves deeply pinnatiparted ; segments remote, spreading or 

 erect-patent, linear or lanceolate, cuspidato-acuminate, often 

 falcate, entire or scantily ciliato-dentate. Inflorescence, heads 

 and flowers as in the type. 



Nom. Jap. Kikuba-nigana (nov.). 



Hab. Prov. SATSUMA : Shiro-yama in Kagoshima (S. 

 Kawagoe ! Sept. 15, 1910). 



var. /?. alpicola Makino. 



Lactuca Thunbergii lusus alpicola Takeda in Bot. Mag., 

 Tokyo, XXIV. (1910), p. 71. 



Lactuca Thunbergii forma alpicola Makino, MSS. 



