Flora Desmidiarum Japonicarum IV

198
Distr. Ireland.
Minoru HIRANO : Flora Desmidiarum Japonicarurn
Our form of this variety does not exactly coincide with the Europearr
description given by W. & G. S. WEs'r becaixse the lateral angle of semicell
is rectangularly rounded and' not undulating as British form, and the
punctations are regularly and densely disposed and do not show any
differentiation between them.
Cosmarium Malinvernianum (RACIB.) SCHMIDLE in MiGuLA Krypt. Fl. 2, 455,
1907; GR6NBLAD Act. Soc. Faun. Flor. Fenn. 49, 32, 1921. Co.s.marium subtholi orme RAclB.
var. Malinvernianum RAclB. in Pamietn. Wydz. Akad. Um. Krakow' 17, 19, 1889. (reprint?)
Cellulae modicae, circiter lt longiores quam latiores, profunde constrictae,.
sinu angusto-lineari in vertice subampliato; semicellulae subrectangulares
vel subtrapeziformes, angulis basalibus rectangulari-rotundis, marginibus
lateralibus convexis alte convergentibus, apicibus truncatis rectis, angulis
apicalibus bene rotundis; membrana valde conico-granulata, granulis
conicis acutis in seriebus concentricis prope marginem, sed ad centrum
reductis, in centro semicellularum cum inflatione scrobiculata; a latere
visae ellipticae, lateribus supra basim utrobique cum inflatione mediana,
conico-granulis in seriebus verticalibus a basi ad apicem ordinatis ; a vertice
visae oblongae, lateribus cum infiatione in medio utrobique, conico-granulis
in seriebus transversis a polo ad polum ordinatis, centro glabro. Long. 86-
103pa, Lat. 64.5-68.8p, Lat. isth. 22.7-25.8p.
Hab. Hondo: K6riyama, Akaiyachi in Iwashiro; Oze-numa in K6zuke;
Inago of Kitamaki-mura in Shinano ; Kotsutsumi-nishi-ike in Mikawa ; Biwaike
in Owari; Shinohara-ike in Oomi; Ko-ike in Yamashiro. Kiushiu:
Nakahama of Lake Ikeda in Satsuma. (New to Asia) (Pl. XXVIII, f. 6)
Distr. Europe.
The breadth of our form of Cosmarium Malinvernianum is somewhat
larger than the European dimension, but its conical granules and their
arrangement well shows the character of the species.
Cosmarium paulense (BORGEs.) JOHNsON var. japonicum HIRANO in Act.
Phytotax. Geobot. 14, 36, 1950. '
Semicellulae cum serie scrobiculis ad centrum, sine granulis intra
marginem lateralem, sinu angusto-lineari. Long. 52@, Lat. 39pa, Lat. isth. 11.2fo.
Hab. Hokkaido: Tomakomai in Iburi. (Pl. XXVIII, f. 2)
Distr. Japan.
Cosmarium binodulum REINSCH inLtiTKEMur,LER Ver. zool.•bot• Ges•Wien 484.
1910.
Cellulae submediocres, elliptico-hexagonales, circiter longiores quam latae,
profunde constrictae, sinu angusto-lineari in capite Ieviter dilatato ; semicellulae