loos.] OBSERVATIONS ON Til FLORA OF JAPAN. 89 



straight, glabrous dorsally ; veins inconspicuous, irregularly anastomosing. 

 Flower pedicellate, about 6-7 mm. across, white ; pedicel erect, strict, 

 minutely pubescent, longer than the calyx, about 5-10 mm. long in flower 

 but attaining about 13 mm. in fruit ; bract similar to the superior leaves. 

 Calyx 5-sepaled, glabrous but puberulent at the subconcavo- truncate base ; 

 sepals erect-patent in flower but then erect, with a straight or scarcely 

 recurved tip, oblong-lanceolate, acuminate, entire, very loosely ciliated on 

 the basal margin, hardly scarious on margin, concave, herbaceous, somewhat 

 carinate with a glabrous edge dorsally, green, persistent, about 31 mm. 

 long, li mm. wide; midrib straight; veins irregularly and very loosely 

 anastomosing. Petals 5, longer than sepals, ovato-lanceolate to trian- 

 gular-lanceolate, subacuminate with an obtuse tip or obtuse, suddenly 

 attenuated into a short claw, entire often subrepand, thinly membranaceous, 

 delicately and loosely vertical-veined, about 4i mm. long, 1§-1^ mm. wide. 

 Stamens 10, very slightly shorter than or equal to petals in height ; fila- 

 ment subulate, shortly dilated at the base, glabrous, white ; anther orbicular, 

 rosy before bursting. Disk 5-lobed, 5-glandular, thickish, connate with 

 the bases of filaments. Ovary ovoid-globose, substipitate, one-locular, 

 glabrous, green, about 11 mm. across ; carpel not thick ; ovules subnumerous, 

 about 16-17, orbiculato-reniform, compressed, with a funicule ; styles 3, 

 lower than petals, filiform, longer than the ovary, erect-patent and arcuato- 

 recurved, about i-stigmatose ; stigma thickish towards the top, subclavate. 

 Capsule ovoid-conical, obtuse, rounded at the base, subsessile, exceeding 

 the persistent calyx, straight, bursting into 6-dentatp-lobed valves (narrowly 

 triangular in form with an obtuse apex) towards the top, 6-nerved, about 

 5mm. long; carpel smooth, not thick but coriaceous. Seeds rather many, 

 orbiculato-reniform, compressed, ferruginous, minutely tuberculate, angulate 

 or obtuse on dorsal edge, about 1 mm. or less long ; funicule thickish. 



Nom. Jap. Kato-hakobe (nov.). 



Hab. Prov. Rikuchu : Mt. Hayachine (T. Mahinol Aug. 3-4, 1905). 



This species comes near to Arenaria saxifraga Fenzl, A. ciliata Linn., 

 and A. norvegica Cunn., but it differs from them in many respects. 



I have named it in honour of Viscount Yasuaki Kato. 



Bryanthus Gmelini D. Don in Edinb. New Phil. Journ. XVII. 

 (L834) p. 160; DC. Prodr. VII. p. 712; Ledeb. Fl. Ross. II. p. 916; 

 Maxim. Rhod. As. Or. p. 4; de Bois. in Bull. Herb. Boiss. V. (1897) p. 

 914 ; Kawakami in Bot. Mag., Tokyo, XV. (1901) p. 218 (Jap.). 



