D«. r.i, 1920.1 T. MAKIXO-COSTETB. TO FLORA OF 3 A PAX. 47 



11. G (192Ü), p. 24, 



Noni. Jap. t^lntali-tsuruumemodoki. 



Hah. Prov. MUSASHI: Takao-yama (T. Making! 1926). 



A very rare species. 



Microlepia marginata C. Chk. var. bipiiinata Making, nov. var. 



Frond attaining about 6 decim. long, 2 dccim. wide, ovat« and acuminate 

 in outline, bipinnate, thinly pubescent; pinnae many, pinnate with numerous 

 pinnules, spreading, erect-patent in the superior ones, sometimes more or 

 less reflexed in the basal ones, narrowly lanceolate, gradually attenuated towards 

 the apex, shortly petiolate, attaining about 22 cm. long, 4 cm. broad, the su- 

 perior pinnae as in those of the type; pinnules erect-patent, obliquely triangular- 

 ovate, obtuse or acute at the apex, entire and obliquely cuneate at the base, 

 crenato-serrate, the upper lowest one largest, attaining about 3cm. long; sori 

 intramarginal, loosely disposed but free from those inthecuneate portion; rachilla 

 slender, pubescent, slightly and alternately winged by the decurrence from the 

 blade of pinnules. 



Nom. Jap. K((jal:u-fi()iw(oshida (nov.). 



Hab. Prov. 8 AG AMI: Manadzuru (T. Making! Dec. 12, 1926.) 



Dryopteris obtusissima (Making) Making, nov. nom. 



Nephrodium erythrosorum rar. ohtusum Making in Bot. Mag., Tokyo, Xlll. 

 (1899), p. 79. 



Dryopteris erythromra inr. obiusa Making, I.e. XXIII. (1909), p. 144. 



Nom- Jap. Maraha-benishida. 



Hab. JAPAN, southern. 



This fern appears to me to serve as an intermediate one between the two 

 species of Dryopteris erytJirosora O. Kcntze and D. decijnens O. Kvntze. 



Hydrocotyle japoaica Making, nov. sp. 



Perennial; shizome often slightly thickish, white. Stem creeping on the 

 surface of ground, filiform, radicant with fine fibrous roots at the nodes, gla- 

 brous, viridescent, laxly ramose. Leaves alternate, lax, long-petiolate, sub- 

 reniform-orbiculate, 7-22 mm. broad, palmately 7-9-fid with close or sub-close 

 sinuses, deeply cordate with an acute sinus at the base, thin, rather shining, 

 viridescent. glabrous, sometimes very scarcely liairy on veins towards the base 

 beneath; lobes coarsely tridentate, with acutish or obtuse teeth which are often 

 1-o-denticulate; main veins palmately 5-9; veinlets delicate; petiole filiform, 

 glabrous, slightly hairy at the top, 10-45 mm. long; stipules semiorbicular, 

 subcrenate, nerveless, membranaceous, pellucid, persistent. Umbel small, long- 

 peduncled, axillary, glomerately 5-8-flowered; bracts minute, one under each 

 flower, lanceolate or subulato-lanceolate, acute, greenish, persistent; peduncle 

 gracile, glabrous, usually shorter than petiole. Flower minute, sessile or snb- 

 sessile. Petals 5, ovate, acutish, 1-nerved, 4 mm. long, palo-gi-eenish. Stamens 

 5, included. Cremocarp few to several, glomerate, depressed-orbiculate, lateral- 

 ly much compressed, with persistent divergent styles alx)ut i mm. long, about 



