4S 



Matsumural Aug. 16, 1885, herb. Sc. Coll. Imp. Unit, Tokyo; K. 

 Nemotol Oct. 1892); Prov. Musashi: Mt. Ydkami-yama in Chichibu (T. 

 Makinol July 16, 18SS) ; Prov. Tosa in Shikoku : Mt. Tebako-yama {T. 

 Mahino ! Aug. 1885 ; IL Yatabe I Aug. 8-9, 1838, herb. Sc. Coll. Imp. 

 Univ. Tokyo). 



This rare and singular species is found grown especially on mossy rocks 

 under shady trees in mountainous districts, and flowers late in autumn. 

 {Sterile specimens present the appearance entirely uncommon to the genus. 



Lactuca (Ixeris) denticulata Maxim, a. typica Maxim, lusus 

 pinnatipartitus Makino. 



Leaves pinnatipartite, sometimes lyrate, winged-petioled, auricled aud 

 amplexicaul at the base, mucronate-obtuse at the apex, flaccid, glaucous 

 beneath ; segments patent, few on both sides, unequal in size, cuneato- 

 ovate or oblong, often scantly lobato-dentate or denticulate with mucronate 

 tips, sinuses open and often broadly rounded at the bottom. 



Nom. Jap. Hana-yaktcshi-so (T. Makino nom. nov.). 



Hub. Prov. Tosa: Mt. Yokogura-yama (T. 'Makinol Oct. 1892), 

 Tokano-mura (T. Makinol June 1893); Prov. Musashi : Tokyo {T. Makinol 

 June 1898). 



This differs from the typical form in the pinnatipartite leaves, and is 

 rarely met with in this country, while the latter is very common. 



Lactuca (Ixeris) Thunbergii Maxim, var. /?. albifiora Makino. 



Rhizome short, often shortly branched, the branch sometimes shortly 

 slender and stolon-like. Involucre often very slightly thicker. Flolets 



7-11 in each head. Corolla white, often tinged externally with light lilac- 

 colour. Achenium finely scabrous. Other characters are as in the type. 



Nom. Jap. S hirobana-nigana (T. Makino). 



Hub. Prov. Iwashiro: Aidzu (Herb! Sc. Coll. Imp. Univ. Tokyo), 

 Mt. lide-san (I.e.!); Prov. Shinano: Mt. Togakushi-yama (I.e.!); Prov. 

 Ishikari in Hokkaido: Sappro (I.e.!); Prov. Tosa: Ochi (T. Makinol May 6, 

 [889), 8akawa(2 7 . Makinol May 8, 1889), Godai-san, Kochi (T. Makinol 

 1892); etc. 



Flolets of the typical ona, a. flaviflora m., are usually 6-5 in each head, 

 but sometimes 10-11 in the boreal form, and 7-11 in the white-flowered 

 variety. This variety is found all over this country, though not so common 

 as the type, Asa Gray's Ixeris albijlora may be identical to my plant. 



