24 



MEMOIRS OF THE XEW YORK BOTANICAL GARDEN 



Growing with other iMyxophyceae on the soil hy the road 

 toward Monte Montoro, Maricao, no. 1094, type. 



Anacystis Willei sp. nov. 



Plate 5, figure 44 



Colonies spherical, smooth, very variable in size, to 200 n 

 diam. ; cells spherical to somewhat compressed, not densely 

 crowded, 5-6 n diam., remaining in separate teguments for some 

 time in groups of 2 or 4, bright aeriiginons, homogeneous ; tegu- 

 ment tough, more or less lamellose throughout the colony, 4-5 m 

 thick outside of the group of cells, hyaline, changing with age to 

 rose-pink or coral-red; resting spores 7-8 m diam., coral-red, 

 smooth. 



Growing interspersed among other Myxophyceae near La- 

 guna Joyuda, Mayagiiez, no. 1209 a, type ; on soil by the road to 

 Monte Montoro, Maricao, no. 1094 a ; on rocks in a ravine by 

 Coamo Springs, no. 1901 d ; on rocks near Laguna Joyuda, Maya- 

 giiez, no. 1307 a ; on rocks, Jayuya, no. 1770 a. 



This species of Aiuicij.Jis belongs to a group in which the 

 cells secrete separate teguments which do not inmiediately fuse 

 with the general colonial tegument. "WTien the color begins to 

 develop these separate sheaths become very visible. 



Anacj'Stis irregularis sp. nov. 



Pl<\TE 5, FIGURE 45 



Colonies very variable in shape and size, up to 75 ij diam., 

 closely associated into masses of considerable size, the tegu- 

 ments of the older colonies at times comj^letely fusing; cells 

 spherical, closely crowded together, 1.8-2.5 p diam., bright aeru- 

 ginous, homogeneous ; resting spores with a very thin, smooth, 

 hyaline wall : tegument close-fitting, hyaline, homogeneous 

 throughout tlie colony. 



Growing among other species of IMyxophyceae on the trunks 

 of trees, Coamo Springs, no. 300, type; on "Flytteblok" west of 

 Humacao, no. 577 a; on rock near Hacienda Catalina, Palmer, 

 no. 791 a ; on lava rock by the road to Monte Montoro, INIaricao, 

 no. 1065 d. 



As this species is piled together and at times in part conflu- 

 ent, it resembles Kuetzing's illustrations of Polycystis icIi^Jiyo- 



