346 Cushman : New England Saccodermae 



MESOTAENIUM Nag. 1849 



*8. Mesotaenium DeGreyi breve West, Jour. Linn. Soc. Bot. 

 29 : 131. pL 20. f. 6. 1892. 



Cells straight or slightly curved, 2^-3 times as long as wide. 

 Length 5 8-66 /i: breadth 21-22/*. 



Mass. : Sphagnum material, North Watuppa Lake, Fall River 

 (collected by S. N. F. Sanford, July 5, 1905)! New to North 

 America. 



9. Mesotaenium macrococcum (Kiitz.) Roy & Bisset. 



Palmogloea 



macrococca Kiitz. Phyc. Germ. 153. 1845. — Mesotaenium 

 macrococcum Roy & Bisset, Ann. Scott. Nat. Hist. 1894. 

 M. Braunii Wolle, Desm. U. S. 31. //. J. /. 5-p. 1884. 



Cells cylindrical, twice as long as wide, the apices truncately 



rounded ; chloroplast an axile plate. 

 Length 38 fi: breadth 18 t u. 



Collins). Mass. : Lake Q 



sigamond, Worcester [Stone). Gibb's Pond, Nantucket ! 



Mesotaenium macrococcum micrococcum (Kiitz.) W. & G. S. 



West. Palmogloea micrococca Kiitz. Bot. Zeitung 5*. 221. 

 1847. — Mesotaenium micrococcum Wolle, Desm. U. S. 32. pL 

 3. f. 10. 1884. — M. macrococcum micrococcum W. & G. S. 

 West, Bot* Trans. Yorks. Nat. Union 5: 41. 1901. 



Cells cylindrical, usually less than twice as long as wide, 

 the apices rounded, slightly narrowed. 

 Length 15 a : breadth 8.5 fi. 

 Mass. : Lake Quinsigamond, Worcester (Stone). Sandwich ! 



* 10. Mesotaenium chlamydosporum DeBary, Conj. 75. //. 7D. 

 1858. 



Cells oblong-cylindrical, 2-2^ times as long as wide, the 



apices broadly rounded ; chloroplast a narrow axile plate. 

 Length 2$ fit: breadth 1 1 ft. 



Mass. : North Lake Watuppa, Fall River ! New to the United 

 States. 



+ 



* Mesotaenium chlamydosporum minor W. &. G. S. West, Brit. 



Desm. 1:53. x 904- 

 Smaller than the typical form. 

 Length 18.5-21 // : breadth 6.5-8.5 ft. 



Mass. : South Framingham ! 



