Desmids from Thailand and Malaysia

Desmicts from Thailand and Malaysia 73
Hirano 1959, Contr. 9, 354, Pl.44, f.15.
Lspr. 13-15.4 ptm, Lcpr. 46-53 ptm, Bspr. 11-19 pm, Bcpr. 46-53 ptm, and I. 4-5
ptm. Cells small, moderately constricted at the middle, sinus open and acuminated at
the extremity; semicells cup-shaped, apex excavated, apical angles produced into a pro-
cess divergent, nodulated and non-tapering, apex trispinated. Sts. 19,20,23,31,32.
Japan, U.S.A., S.America, Africa, Madagascar, Australia.
34. St. floriferum W. & G.S.West
West 1896, Trans. Linn. Soc. Bot. 5, 267, Pl.18, f.1; Krieger 1932, 199, Pl.19, f.6;
Prescott et al. 1982, 2:4, 198, Pl.438, f.2.
Lspr. 23 um, Bspr. 20 pm, Bcpr. 53 ym, and I. 7 ptm. Semicells cup-shaped, sinus
open and acuminated at the extremity, apical angles produced into a process horizontal,
slightly attenuated to the extremity, trispinated, apex truncate and undulated; vartical
view of a semicell triangular, sides slightly concave, roughly nodulated, with pair of
emarginate verrucae. Sts. 32,35. Indonesia (Sumatra, Bali), Europe, N.America, Afri-
ca. New to Thailand.
35. St. freemanii W. & G.S.West var. nudiceps Scott & Prescott Pl.38, f.1,8.
Scott & Prescott 1961, 92, Pl.43, f.3.
Lssp. 28.6-33 ptm, Lcsp. 53-61.6 gm, Bssp. 27.3-35 pm, Bcsp. 53-61.6 ptm, and
I. 10-11 ptm. Sts. 18,19,21. Indonesia (Sumatra, Bomeo). New to Thailand.
35a. var. triquetrum W.&G.S.West Pl.38, f.7; Pl.49, f.1.
West 1902, Trans. Linn. Soc. Bot. 6, 177, Pl.21, f.22; Scott & Prescott, 1961, 92,
Pl.43, f.2.
L. 33 ptm, B. 31.7 ptm, and I. 11 "m. St. 20. Ceylon, Indonesia (Sumatra, Borneo).
New to Thailand.
36. St. furcatum (Ehrenb.) Breb. var asymmetricam Gr6nblad Pl.51, f.17.
Krieger 1932, 199, Pl.17, f.11; Prescott et al. 1982, 2:4, 204, Pl.378, f.5; Pl.379,
f.1,2,10.
Lcpr. 26.4 "m, Bcpr. 22 ptm, and I. 7 ptm. Sts. 25,47. India, Indonesia (Sumatra),
Japan, Europe, Australia. New to Thailand.
37. St. gemetliparum Nordst.
West 1902, 179, Pl.21, f.25; Hirano 1955, Fauna Flora Nepal Himalaya vol.1, 29, Pl.5,
f.8; Prescott et al. 1982, 2:4, 209, Pl.382, f.4.
Lcpr. 27 ptm, Bcpr. 22 ptm, and I. 8#m. St. 25. Ceylon, Nepal, Japan, N. &
S.America. New to Thailand.
38. St. gtadiosum Turner
West & Carter 1923, 5, 57, Pl.137, f.1,2; Krieger 1932, 199, Pl.15, f.14; Scott & Pre-
scott 1961, 93, Pl.56, f.1.
L. 36 ptm, B. 31 ptm, and I. 7um. St. 44. India, Indonesia (Java, Sumatra), Europe,
U.S.A., Africa. New to Thailand.