PLATE 11 



Scinaia Johnstoniae, sp. nov. 



Fig. 14. Radial section through the cortex of a plant collected at San Pedro, 

 California, by Mrs. H. D. Johnston, June 28, 1900 (Herb. Univ. Calif., No. 96356, 

 dried specimen). The utricles in this drawing are less flattened than in the next, 

 but flattened utricles also occur. 



Fig. 15. Radial section through the cortex of a plant collected at La Jolla, 

 California, by Mrs. M. S. Snyder (Herb. Univ. Calif., No. 90727, dried speci- 

 men), showing extreme of flattening of utricles and also antheridia. 



Scinaia japottica, sp. nov. 

 Fig. 16-18. Radial sections through the cortex of a plant collected at Misaki, 

 Japan, by Professor K. Yendo, April, 1900 (Herb. Univ. Calif., No. 90835, dried 

 specimen). Figure 17 shows the peculiar striae in the walls of the utricles due 

 to wrinkling. The sections shown in figures 17 and 18 have not recovered their 

 shape as well as the sections shown in figure 16. 



Scinaia complanata (Collins) Cotton 



Fig. 19. Radial section through the cortex of the plant distributed under 

 No. 836 Phycotheca Boreali-Americana, collected at Indian River Inlet, Florida, 

 by Mrs. G. A. Hall, April, 1899 (dried specimen in writer's copy). X 391 diam. 



Fig. 20. Radial section through the cortex of a plant in Herb. Farlow, col- 

 lected at Gilberts Bar, Florida, by A. H. Curtiss, March, 1897 (dried specimen). 

 X 391 diam. 



Fig. 21. Radial section through the cortex of another plant collected at the 

 same time by the same collector (Herb. Univ. Calif., No. 96361, dried specimen). 

 X 391 diam. 



Fig. 22. Radial section through the cortex of a plant in Herb. Farlow, col- 

 lected at Coopers Island, Bermuda, bv W. G. Farlow in 1881 (dried specimen). 

 X 391 diam. 



Scinaia latifrons M. A. Howe 

 Fig. 23. Radial section through the frond of a plant collected at San Pedro, 

 California, by Miss Sarah P. Monks (Herb. Univ. Calif., No. 132817, dried speci- 

 men). X 391 diam. The section did not fully recover its original proportions. 



Scinaia Cottonii sp. nov. 



Fig. 24. Radial section through a specimen in Herb. Holmes (number 9) at 

 the University of Birmingham, collected at Enoura, Japan, by Saido (dried 

 specimen). X 391 diam. The utricles and antheridia are very well shown. 



Scinaia carnosa Harvey 

 Fig. 25. Radial section through the cortex of a plant distributed by Harvey 

 under No. 38 of his Algae of Ceylon (Herb. Univ. Calif., No. 77093, dried speci- 

 men). X 391 diam. This represents a younger state of the utricles than that 

 represented in the next. 



Fig. 26. Radial section through the cortex of another plant distributed by 

 Harvey under the same number (38, Alg. Ceylon) and preserved in Herb. Farlow 

 (dried specimen). X 391 diam. 



Fig. 27. Radial section through a plant dredged near Observation Island 

 (No. 5165), Philippine Islands, by the U.S. Fish Comm. Str. "Albatross," 

 February 24, 1908, and submitted for determination by F. S. Collins (dried 

 specimen). X 391 diam. This plant is referred to Scinaia carnosa with con- 

 siderable doubt. 



Scinaia Salicornioides (Kuetz.) J. Ag. 



Fig. 28. Radial section through the cortex of a plant collected on the coast 

 of Natal by Dr. 11. Becker and preserved in Herb. Weber-van Bosse (dried 

 specimen). X 391 diam. 



Fig. 29. Sketch of another radial section from the same plant as represented 

 in figure 28, to show variation in utricles. X 391 diam. 



Fig. 30. Radial section through the cortex of a plant collected at ' ' The 

 Kowie, " South Africa, by Dr. H. Becker and preserved in Herb F. S. Collins 

 (dried specimen). X 391 diam. 



All the figures were drawn by Miss Helen M. Gilkey under the direction of 

 W. A. Setchell. 



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