Desmids from Thailand and Malaysia

56 M. HIRANO
semicells 5-lobed, polar lobe with a deep and open median incision, of a long elliptic
form, apical angles with a short and sharp spine, apex convex, lateral lobes divided into
two lobules of the same spine size, lobules further divided into two emarginate parts;
cell wall with a protuberans at the middle above the isthmus and two scrobiculations
above the protuberans, lobules with a wart. St. 44. India, Ceylon, Burma, Indonesia
(Sumatra, Borneo), Cambodia. New to Thailand.
36. E sinuosum Lenorm. var. sinuosum
Krieger 1937, 499, Pl.62, f.9-11; Ruzicka 1:2, 421, Pl.69, f.5-7; FOrster 1982, 338,
Pl.44, f.1.
L. 62-72.5 um, B. 36-48.5 ptm, and I. 6.5-11 Ltm. St. 1. India, Burma, Thailand,
Indonesia (Java, Sumatra, Borneo), Europe, N. & S.America, Africa, Australia.
36a. var. aboense (Elfv.) Cedergren Pl.23, f.20.
Krieger 1937, 500, Pl.62, f.12-15.
L. 44-48 "m, B. 24-26.5 ptm, and I. 6.5-7 ptm. Sts. 1,3,40. Europe, U.S.A.
36b. var. didettoides Krieger Pl.23, f.15,16.
Krieger 1932, 214, Pl.22, f.2; Krieger 1937, 501, Pl.62, f.18,19; Hirano 1967, Nature
Life SEA. 5, 60.
L. 59-123 ptm, B. 39.6-66 pm, and I. 11-17.5 pm. Sts. 17,22,24,28,49. Indonesia
(Sumatra), Japan, Thailand.
36c. var.perforatum Krieger Pl.23,f.19.
Krieger 1937, 503, Pl.62, f.24.
L. 46-59 ptm, B. 24-35 ptm, and I. 6.5-11 ptm. Sts. 1,30,38,45,53. Europe, Japan.
New to Thailand.
36d. var. reductum W.&G.S.West Pl.23, f.17,18.
West 1905, 2, 22, Pl.36, f.2,3; Krieger 1937, 503, Pl.62, f.25; Scott & Prescott 1961,
17,40, Pl.9, f.8.
L 51-80 ptm, B. 26.5 ptm, and I. 9-13 ptm. Sts. 17,19,28,29,36,41,45,51. Thailand,
Indonesia (Borneo, Sumatra), Ceylon, Singapore, Europe, Africa.
36e. var. scrobiculatum Nordst. Pl.23, f.2.
Krieger 1937, 503, Pl.62, f.2,3; FOrster 1982, 339, Pl.44, f.2.
L. 48.5 ptm, B. 26.8 ptm, and I. 9 "m. Sts. 35,49. Thailand, Cambodia, Indonesia
(Borneo, Sumatra), Europe.
36f. var. subienneri W.&G.S.West Pl.25,f.4.
West 1902, Trans. Linn. Soc. Bot. 6,148, Pl.19, f.17; Krieger 1937, 505, Pl.63, f.7.
L. 42-66 ptm, B. 31-32 "m, and I. 6.5-10 #m. Polar lobe elongated, slightly di-
lated upward, incision between polar and lateral lobes broad and somewhat rectangular-
ly rounded, lateral lobes rectangular, retuse at the middle, the shape of lateral lobes
seem to be 2 divided lobules. Sts. 27,28,31,49. Burma, Ceylon, Indonesia (Java), Japan.
New to Thailand.