Flora Desmidiarum Japonicarum IV

190
Minoru HIRANo : Flora Desmidiarurn Japonicarum
Cellulae magnae, circiter 1}, longiores quam latae, profunde constrictae,
sinu angusto-lineari ad verticem sed exterius acute aperto ; semicellulae late
ovatae vel pyramidato-ovatae, angulis .basalibus late rotundis, apicibus
leviter truncatis; mernbrana granulata, granulis magnis circa 12-14 in
unoquoque latere, apicibus glabris, seriebus radiantibus et concentricis
granulorum prope marginem, in medio reductis et irregularibus sparsimque
ordinatis, inter granulos subtiliter punctatis ; a latere visae subcirculares ;
a vertice visae ellipticae. Long. 106-108pa, Lat. 64.4-69pa, Lat. isth. 17-25pa.
Hab. Hokkaido: Ytifutsu, Tomakomai in Iburi. Hondo: Ogata in Ugo;
Kashima-cho in Iwaki; Nogiwano-kwannon-ike in Iwashiro; b-hanami-ike
in Shinano. (Pl. XXVII, f. 24)
Distr. Japan, Kuriles, Mongolia, China, Burma, India, whole Europe,
Greenland, Spitzbergen, N. & S. America, New Zealand, Azores.
Cosmarium ochthodes NORDsT. in Ofvers. K. Vet. Akad. FOrh. 17, 1875; Muctui.A
Krypt. FL 2, 469, 1907; WEsT Monogr. Brit. Desm. 4, 10, 1911; OKADA Journ. Imp. Fish. Inst.
30, 169. 1930; INsAM & KRIEGER Hedw. 76, 104, 1937; KRIEGER Ber. Dtsch. Bot. Ges. 56,
62, 1938; IRENgE-MARIE Nat. Canad. 75, 156, 1945; TAFT Ohio journ. Sci. 45, 198, 1945.
Cellulae submagnae, circiter lg- longiores quam latae, profunde constrictae,
sinu angusto-lineari in capite subampliato; semicellulae semiellipticopyramidatae
vel ovato-pyramidatae, angulis basalibus leviter rotundis,
marginibus lateralibus prope basim convexe divergentibus et subito convexoconvergentibus
ad apicem, marginibus lateralibus distincte 7-granulatocrenatis
(sine crenis apicalibus et basalibus), apicibus truncatis leviter 4crenatis
(curp crenis duobus apicalibus), granulis magnis in seriebus concentricis
intra marginem, infiationibus in medio ordinatis; a latere visae
ellipticae. Long. 65-81pa, Lat. 48-56p, Lat. isth. 14-25pa.
Hab. Hokkaido : Toyokoro-konuma in Tokachi; Tomakomai, T6asa-numa
in Iburi. Hondo : Bora-numa in Mutsu ; G6no-ike in Hitachi ; Daizah6shi-ike,
Kanori-ike in Shinano; Ikejiri-ike in Tanba. (New to Japan) (Pl. XXVIII,
f. 1)
Distr. Kuriles, S. China, whole Europe, Nova Zembla, Greenland, Spitz-
bergen, N. America.
Cosmarium margaritiferum MENEGH. in RAi.Fs Brit. Desm. 100, 1848; M[GT]LA
Krypt. Fl. 2, 451, 1907; WEsT Monogr. Brit. Desm. 3, 199, 1908; ALLoRGE Rev. Alg. 5, 357,
1930; OKADA ]ourn. Imp. Fish. Inst. 30, 168, 1934; HrRANo Act. Phytotax. Geobot. 12, 93, 1943.
Cellulae mediocres, ellipticae, circiter lg longiores quam latiores, profunde
constrictae, sinu angusto-lineari in capite subampliato ; semicellulae truncatopyramidatae,
angtilis basalibus late rotundis, marginibus lateralibus leviter
convexis et margine granulato-undulatis ad apicem granulis reductis,