Desmids from Thailand and Malaysia

98 M. HIRANO
West 19,20. St. excavatum W. & G.S. West 21. St. pygmaeum Breb. var. obtusum Wille
22,23. St. cornicutatum Lund. var. variabite Nordst. 24. St. freemanii W. & G.S. West 25.
St. pygmaeum Breb. var. obtiLsum Wille
Plate 48
1,2. Staurastrum acanthastrum W. & G.S. West 3. St. xanthium Krieger 4,5. St.
tauphorum W. & G.S. West 6. St. perundutatum GrOnblad 7,8. St. smithii (G.S. West)
Teil. 9. St, sattans Joshua var. polyserax Scott & prescott 10,11. St. calyxoides Wolle var.
orientale Scott & Prescott 12. St. pseudozonatum Borge var. sumatranum Krieger 13,14.
St. setigerum Cleve 15. St. hantzschii var, iaponicum Roy & Bisset 16. St. pseudozonatum
Borge var. sumatranum Krieg.
Plate 49
1. Staurastrum freemanii W. & G.S. West var. triquetrum W. & G.S. West 2. St. striotatum
(Nag.) Arch. var. divergens W. & G.S. West 3,4. St. abruptum W. &G.S. West 5. St.
protectum W. & G.S. West var. rangoonense (Skuja) Scott & Prescott 6. St. zahlbruckneri
Ltitkem. var. mamillatttm W. & G.S. West 7. St. cerastes Lund. var. pulchrum Scott &
GrOnblad 8. St, connatum (Lund.) Roy&Bisset 9,10. St. curvatumW. West 11. St. inconspicuum
Nordst. yar. crassum Gay 12,13. St, curvatum W. West 14,15. St. tenuissimiun
W. & G.S. West 16. St. heimertianum Ltitkem. var. sumatranum Scott & Prescott 17.
Arthrodesmus curvattLs Turner var. tatus Scott & Prescott 18. St. subsaltans W. & G.S. West
var. indonesianum Scott & Prescott
Plate 50
1. 0nychonema taeve Nordst. var. hexagonum var. nov. 2. Desmidium suboccidentale
Scott & Prescott 3. D. quadratum Nordst, 4. 0. laeve Nordst. var. taeve 5. Staurastrum
archerii West var, archeri 6. Desmidium graciliceps (Nordst.) Lagerh. 7, D, aptogonum
Breb. var. tetragonum W. & G.S. West 8. Hyalotheca dissitiens (Sm.) Br6b. var. hians Wolle
9. H. dissiliens (Sm.) Breb. var. dissiliens 10,11. Haplozyga armata (Lefg, & Nordst.)
Racib. var. raciborskii F6rster 12. Spondytosium nitens (Wall.) Kirchn. var. triangulare Turner
13. Sp. nitens (VVall.) Arch. var. iavanicum (Gutw.) GrOnblad 14-16. Sp, planum (Wille)
W, & G,S. West 15. Hyatotheca disitiens (Sm.) Breb. var. tatrica Racib.
Plate 51
1. Groenbladia negtecta (Racib.) Teil. var. elongata Scott & Prescott 2,3. G. neglecta
(Racib.) Teil. var. neglecta 4. BambiLsina brebissonii Ktitz. 5. Bamb. brebissonii KUtz. var,
gracilescens Nordst. 6,7. D. gracilices (Nordst.) Lagerh. 8. D. quadratum Nordst. 9.
Hyatotheca undutata Nordst. var. perundulata Grdnblad 10. Teilingia excavata (Ralfs) Bourrelly
11. Desmidium pseudostreptonema W. & G.S. West 12. D. swartzii Ag. 13. D,
coarctatum Nordst. 14. Euastrum exile Joshua var. Iatum Hirano, var. nov. 15,16. Staurastrum
pachyrhynchiforme Hirano, sp. nov. 17. St. furcatum (Ehrenb.) Breb. var. asymmetricum
GrOnblad 18. Cosmarium moniliforme (Turp.) Ralfs var. indentatum Scott & Gr6nblad
19. StaurastrumsubsaltansW,&G.S.West 20. CosmariumdivergensKrieger
Address of the author:
(Mr) Minoru Hirano, D.Sc. ilZve ff
Chashi 1-9-1, Nagaokaky6, JAPAN 617 ftmaIEI.itipm:]ilL9-1