Desmids from Thailand and Malaysia

Desmids from Thailand and Malaysia 59
L. 57 ptm, B. 68 ptm, and I. 11 ptm. Sts. 36,38,39,41. Europe, U.S.A., Africa. New to
Thailand.
4a. var. compacta Fdrster
Krieger & Gerloff 1939, 13:2, 10, Pl.97, f.1-3; F6rster 1982, 360, Pl.48, f.4,5.
L. 55 ptm, B. 57 um, and I. 11 xtm. Sts. 1,3. Europe, N.America, Africa. New to
Thailand.
4b. var. expansa (Bail.) Nordst. Pl.26, f.21.
Krieger & Gerloff 13:2, 11, Pl.97, f.4; FOrster 1982, 360, Pl.48, f.8.
L 50-57 ptm, B. 40-44 ptm, and I. 6.5-8 ptm. Sts. 1,36,39,40,41. N. & S.America.
New to Thailand.
5. M. ceratofera Joshua Pl.31,f.6.
Scott & Prescott 1961, 48, Pl.15, f.2,3; Hirano 1967, Nat. Life SE-Asia, 5, 62, Pl.14,
f.4; F6rster 1982, 363, Pl.65, f.2.
L. 145 ptm, B. 79 xtm, and I. 20 ptm. St. 20. Burma, Thailand, Indonesia (Sumatra,
Borneo).
6. M. ceylanica Fritsch var. ceylanica
Krieger 1932, 217, Pl.24, f.5; Krieger & Gerloff 1939, 13:2, 37, Pl.101, f.13; Croasdale
& Flint 1986, Fl. New Zealand Vol.1, 109, Pl.24, f.3,4.
L. 59 Ltm, B. 66 xtm, and I. 9 ptm. Sts. 43,51. India, Ceylon, Burma, Indonesia
(Sumatra), Australia, New Zealand.
6a. var. wallichiana (Turner) Krieger Pl.28, f.1,2.
Krieger & Gerloff 1939, 38, Pl.101, f.14-16.
7.
8.
9.
L. 48.5 xtm, B. 48.5 ptm, and I. 9 xtm. St. 18. India, Burma, Indonesia (Sumatra,
Bomeo). New to Thailand.
M. cunningtoni G.S.West PL27, f.2.
Krieger & Gerloff 1939, 13:2, 85, Pl.127, f.4,5; Hirano 1967, Nat. Life SE-Asia 5, 62,
Pl.12, f.3.
L. 132-180 gm, B. 110-123 ptm, and I. 22-31 ptm. Cells large, 1.2 times longer
than the breadth, deeply constricted at the middle, sinus slightly open and acuminate at
the extremity; semicells trapeziform, incision between polar and lateral lobes deep and
sublinear, polar lobe broadly cuneate, lateral sides slightly concave, apical angles trun-
cate or emarginate, apex convex, fairly and deeply retuse at the middle, incision be-
tween upper and lower lateral lobes deep and open sublinearly, upper and lower lateral
lobes further divided into 2 or 3 lobules. Sts. 35,37,39. Thailand, Africa.
M. decemdentata (Nag.) Arch.
Krieger & Gerloff 1939, 34, Pl.104, f.9-11; Ruzicka 1981, 575, Pl.94, f.5-13; F6rster
1982, 367, Pl.50, f.7,8.
L. 53 ptm, B. 59.5 ptm, and I. 8.5 ptm. St. 19. Cosmopolitan. New to Thailand.
M. lux Joshua Pl.29, f.6.