2 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 68 



Sagra's " Histoire physique, politique et naturelle de 1' ile de Cuba " 

 (1842. Spanish edition, 1845), i" which 52 species of algae (exclud- 

 ing diatoms) are described or enumerated. 



In 1 87 1 Professor W. G. Farlow published a popular illustrated 

 account of "Cuban Seaweeds" in The American Naturalist (5: 

 201-209). This was based upon specimens collected by Charles 

 Wright and the author states that 46 species were identifiable. No 

 general list, however, was published and the species mentioned and 

 illustrated in the course of the popular discussion are all members 

 of the order Siphonales of the Green Algae. 



Two papers by M. G. de la Maza ^ on the Cuban flora include lists 

 of algae based almost wholly upon the work of Montagne, and 

 George Murray's " Catalogue of the Marine Algae of the West 

 Indian Region " ^ includes references to Cuba based chiefly upon the 

 papers of Montagne and of Farlow. 



Dr. Otto E. Jennings,^ in a recent paper on the flora of the Isle of 

 Pines, includes three named species of marine algae and three that 

 are referred to genus only. 



In the list, an asterisk is prefixed to the names of species that are 

 believed to be attributed to Cuba for the first time. However, with 

 changing conceptions as to specific limitations and with occasional 

 uncertainties as to synonymy, it is not always possible to correlate 

 accurately the nomenclature of the older lists with that here adopted. 



Cyanophyceae 



Family OSCILLATORIACEAE 



* PHORMIDIUM HENDERSONII, sp. nov. 



Forming firm, cartilaginous, suborbicular or depressed-hemi- 

 spheric, lubricous, bluish olivaceous or light green, often decolorate 

 discs or cushions 2-7.5 cm. broad and 1-2.5 cm. thick, becoming 

 corneous or corneous-coriaceous and only 1-3 mm. thick on drying, 

 rather conspicuously lamellate, the lamellae (when fresh) mostly 

 300-600 fx thick, all except the youngest consisting chiefly of empty 

 hyaline more or less confluent, though usually easily perceptible. 



^ Flora de Cuba. Tesis para el doctorado. Habana, 1887. Nociones de 

 botanica sistematica. Habana, 1893. 



.'Journ. Bot. 26: 193-196, 303-307, 331-338, 358-363. 1888; 27: 237-242, 257- 

 262, 298-305. 1889. 



*A contribution to the botany of the Isle of Pines, Cuba, based upon the 

 specimens of plants from that island contained in the Herbarium of the 

 Carnegie Museum under date of October, 1916. Ann. Carnegie Mus. 11: 

 19-290. pi. 5-28. 1917. 



