26 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



giiez, no. 981 & ; on a tree trunk along the road near Monte Mon- 

 toro, Maricao, no. 1062 ; on soil, Hacienda Holm, Mayagiiez, no. 

 1176 h. 



Anacystis radiata sp. nov. 

 Plate 5, figure 48 



Colonies spherical, 50-80 n diam., not collected into masses, 

 but free as a rule; cells numerous (100-300) in a colony, mostly 

 angular, moderately crowded, about 4 \x diain., arranged in radial 

 rows, dividing in three planes, the cells on the surface appearing 

 in groups of 2 or 4, dark olive-green or olive-gray, homogeneous ; 

 resting spores with thin, smooth walls; tegument firm, smooth, 

 hyaline, homogeneous throughout the colony, about 6 n thick 

 outside of the cells. 



Growing in association with other species of Myxophyceae, 

 on rocks in a ravine, Coamo Springs, no. 1901 a, type ; on a wall, 

 Governor's Palace, San Juan, no. 58 b; on old wood in the prim- 

 eval forest at Hacienda Catalina, no. 755. 



It is difficult to decide whether the above organism should 

 be placed in the genus Anacystis or in the genus Pleurocapsa. 

 It resembles the latter very strongly in the vegetative condition, 

 but since there are no gonidia, a characteristic of that genus, I 

 am placing it with the former in a group with radiating angular 

 cells, awaiting further knowledge of its life history. 



Anacystis radiata major var. nov. 

 Plate 5, figure 49 



Colonies sj)lierical, 50-75 \x diam. ; resting spores 10-11 \x 

 diam., otherwise as the species. 



Growing on shaded rock about seven kilometers east of 

 Coamo, no. 1869 f, type, and no. 1870 x. 



Anacystis anomala sp. nov. 



Plate 5, figure 50 



Colonies very irregular in shape and size, with a tendency 

 to being cuboidal with rounded corners in the earlier stages of 

 development, containing approximately 1000 cells; single, free 

 cells spherical to subspherical, 2.8-3.2 n diam. Avith tegument, 

 cuboidal in the colony and 1.3-2.5 |j diam. without wall, arranged 



