348 Cushman : New England Saccodermae 



i 5. Cvlindrocystis Americana minor Cushman, Rhodora 7 : 113. 



1905. 



Cells cylindrical, twice as long as wide, with broadly rounded 

 apices, and a slight median constriction ; each cell with a stellate 

 chloroplast, smaller than the typical form. 



Length 32-34//: breadth 16/i. 



N. H. : Mt. Moosilauke ! Mass. : Sandwich ! 



16. Cylindrocystis diplospora Lund. Nova Acta Reg. Soc. Sci. 

 Upsala III. 8 : 83. //. 5. /. 7. 1871. — Calocylhidrus diplospora 

 Wolle, Bull. TorreyClubg: 15. 1882.— Desm. U. S. 56. 

 //. 12. f. 18. 1884. 



Cells subcylindrical, twice as long as wide, slightly broader 

 toward the truncately rounded apices ; chloroplasts with numerous 

 radiating processes. 



Length 60-61 fi : breadth 3 1-32 fi : isthmus 27-28 /i. 



♦ ' N. H. : Intervale ! Mass. : Mt. Everett {Wolle). 



Cylindrocystis diplospora minor var. nov. 



Cells like the typical but very much smaller. 



Length 35—38 /i : breadth 16-18/*: isthmus 14— 1 5.5 /-«. 



Mass. : North Lake Watuppa, Fall River ! 



NETRIUM Nag. 1849 



17. Netrium Digitus (Ehrenb.) Itzigs. & Rothe. Closterium 

 Digitus Ehrenb. Phys. Abh. Akad. Wiss. Berlin 1830 : 68. 

 1832. — Penium Digitus Wolle, Desm. U. S. 34. //. 53- f* 

 1884. — Netrium Digitus Itizigs. & Rothe, in Rabenh. Alg. 



508. 1856. 

 /. 4. 1884. 



Woll 



Cells elliptical-oblong, gradually attenuated toward the apices 

 which are rounded-truncate, three to four times as long as wide ; 

 chloroplasts axile with about six longitudinal plates, deeply notched 



at the outer margins. 



Length 105-430//: breadth 34-105//: apices 14-45 J"- 

 Me. : Oldtown and Great Works (Harvey). Kittery, frequent ! 

 Bridgeton ! N. H. : Saco Lake (Wood). Mt. Moosilauke, abund- 



ant ! Pudding Pond, North Conway ! Intervale ! Mass. : Lake 



Quinsigamond, Worcester (Stone). Amherst (W. West). Tewks- 

 bury (Lagerhcim) ! Winchester Reservoir ! Reading ! Wellesley ! 

 Pondville ! Plainville ! Bridgewater ! Halifax ! Swansea ! Fall River ! 



