220 MISS L. S. GIBBS ON THE FLORA AND PLANT FORMATIONS 
Pentium TRUNCATUM, Ralfs, Brit. Desmid. 152, t. 25. f. 5. 
Sarawak, Matang, 10007, on damp wood. March. 4406. A narrow form, 
26 x 9 y. 
Distrib. Europe, N. America, 
PENIUM POLYMORPHUM, Perty, Kleinste Lebensf. 207, t. 16. f. 15. 
Melalap, 800’, on log in river. Jan. 2767. 38x20 Sm. Senagong, 
1000’, on stones and dead leaves in stream. Jan. 2963. A rather wide 
form, 38 x 2275 y. 
Distrib. France, Germany, Austria, Lapland, Switzerland, Sweden, 
N. America, New Zealand, Azores, India. 
PENIUM curtum, Bréb, in Kütz. Spec. Alg. 167. 
Sarawak, Matang, 700’, under waterfall. March. 44046. 33 x I6 y. 
Distrib. Europe and N. America, W. Indies, Greenland, Spitzbergen, 
Nova Zembla, Franz-Joseph Land, India, Burma, Siam, W. Africa, 
Madagascar. 
CLOSTERIUM EHRENBERGII, Meneg. in Linnea, xiv. (1840) 232. 
Tenom, 700', on submerged plants in ditch. Jan. 23080. 391x 10 p. 
Distrib. Europe, N. & S. America, W. Indies, Japan, India, Siam, New 
Zealand, Faeroes, Central China, Samoa, Central & E. Africa, Brazil, 
Uruguay, Patagonia. 
CLosrERIUM LEIBLEINI, Kütz. in Linnea, viii. (1833) 596 
Tenom, 700’, on floating plants in ditch. Jan. 283 8. A form with 
rather thicker apices, 100 x 16:6 u. 
Distrib. Europe, Faeroes, Iceland, N. & S. America, Burma, Mongolia, 
Japan, Australia, Madagascar, tropical Alios Ceylon, India, Samoa, Brazil, 
Argentina, Uruguay, Patagonia, W. Indies. 
CLOSTERIUM MONILIFERUM, Ehrenb. ex Priteh, Infus. ed. 4. 748 (1861). 
Tenom, 700', submerged plants in ditch. Jan. 3080. 262 x 42 y. 
Tenom, 700', among Riceiocarpus in ditch. Jan. 2657. Tenom. among 
Azolla. Jan. 2816. Small forms 20131 u, 195x284. A stout form 
also in 2657, 344 x 60 pe. 
Distrib. Europe, N. America, Singapore, Ceylon, New Zealand. Brazil 
pe. , 5 , 2 , , , 
Argentina, Uruguay, Patagonia. 
CLOSTERIUM PARVULUM, Vay. Gatt. einz. Algen, 106, t. 6 c. £. 2. 
Sarawak, Matang, pipe-track, among alg in peaty water. March. 4413. 
Distrib. Europe, N. America, Sandwich Islands, Brazil, Ecuador, 
Patagonia, Nova Zembla, Greenland, Siberia, Japan, Ceylon, Siam, Sumatra, 
Java, Samoa, Australia, Central & E. Africa. 
