Flora Desmidiarum Japonicarum IV

174
Minoru HIRANo: Flora Desmidiarum Japonicarum
Junsai-aka-numa in Oshima, Hondo: Komozuchi in Mutsu; Megata, Ogata
in Ugo; Hakuryu-ko, Oishita, Chtikawa-ike in Uzen; Kirifushi-numa, Izunuma,
Naga-numa in Rikuzen; K6riyama, H6zawa-1'ke, Nogiwano-kwannonike,
Akaiyachi in Iwashiro; Nanko in Iwaki; Omine-numa in K6zuke;
Goda-numa in Shimofusa; A O-hanami-ike, Midoriga-ike on Mt. Yatsugatake
in Shinano ; 6-numa in Mikawa ; Toba, J6do-ike in Ise ; Shinohara-ike, Fuseike
in Oomi; Mizoroga-ike in Yamashiro. Kiushiu: Imuta-ike in Satsuma.
(Pl. XXVI, f. 22)
Distr. Japan, Europe, U. S. A., Brazil.
Cosmarium novae-semliae WILLE var. sibericum BOLDT in WEsT Monogr•
Brit. Desm. 3, 3i, 1908; GR6NBLAD Act. Soc. Faun, Flor. Fenn. 49, 36, 1921; SKuJA AcL Horti
Bot. Univ. Latv. 3, 162, 1928; ?REscoTT Pap. Mich. Acad. Sci. 23, 207, 19Ji8.
Var. sinu semicellularum excavatioribus et isthmo angustioribus, denti-
culis prope marginem lateralem distinctioribus et denticulis intra marginem
paucioribus ; a vertice visae plus angusto-ellipticae. Long. 10-11pa, Lat. 10-
11/J, Lat. isth. 5-6p.
Hab. Hondo: Akaiyachi in Iwashiro. (New to Asia) (Pl. XXVII, f. 18, 27)
Distr. Siberia, Europe, Canada.
Cosmarium trachydermum W. & G. S. WEsT in Trans. Linn. Soc. Bot. 5, 64,
18?5; Monogr. Brit. Desm. 3, 178, 1908,
Cellulae submediocres, circiter 1,-i longiores quam latae, profunde
constrictae, sinu aperto acutangulo sed obtuso ad verticem; semicellulae
elliptico-oblongae, lateribus bene rotundis, apicibus subtruncatis; a latere
visae subcirculares ; a vertice visae ellipticae ; membrana granulata, granulis
parvis in seriebus concentricis intra maiiginem; chromatophoris axialibus
cum duobus pyrenoidibus in unoquaque semicellula. Long. 33.6-421i, Lat.
33.6-34pa, Lat. isth. 13-17@.
Hab. Hondo: Biwa-ike in Owari. Shikoku: Yamada in Tosa. (New to
Asia) (Pl. XXVII, L 3)
Distr. British Isles; Madagascar.
Cosmarium sphaeroideum WEsT in Monogr. Brit. Desm. 3, 178, 1908; HrRANo
Bot. Mag. 66, 132, 1953.
Cellulae submediocres, circiter 1} duplo longiores quam latae, profunde
constrictae, sinu angusto-lineari sed aliquando leviter lineari aperto;
semicellulae transverse late ellipticae, marginibus lateralibus rotundis,
apicibus leviter truncatis; a latere visae ellipticae; a vertice visae late
ellipticae ; membrana granulata, granulis magnis irregulariter dispositis circa
19-20 in toto ambitu marginis. Long. 56-60pa, Lat. 32-34.4pa, Lat. isth. 17pa.