Howe : Phycological studies 97 



Plants 2-17 cm. high, from a bulbous, subfusiform, or fascicu- 

 late-funicular rhizoidal base, usually dark- or yellowish-green when 

 living, becoming more or less albescent on drying, moderately cal- 

 cified and often remaining flexible, or more encrusted with age ; 

 stipe simple, mostly subterete, sometimes a httle expanded and flat- 

 tened above, 0,2-5,0 cm. long, 1-6 mm. wide, corticated, its sur- 

 face compact and smooth : transition in structure from stipe to 

 flabellum abrupt, the flabellum uncorticated, cyathiform, now and 

 then 1-5 cleft nearly or quite to the base, or more often early div- 

 ided to base on one side and becoming almost plane, but usually 

 remaining more or less concavo-convex at extreme base, then 

 mostly triangular-obovate, subcuneate-obovate, semiorbicular, spat- 

 ulate, or spoon-shaped, i-ii cm. long, 1-9 cm. wide, subentire, 

 often becoming irregularly laciniate-fimbriate, rather faintly or oc- 

 casionally not at all zonate, the surface longitudinally strigose : 

 filaments of the flabellum in several or many layers, nearly straight, 

 parallel and rigid, somewhat flexuous and interwoven, distinct, 

 often suggesting those o{ Penicillus^ each enclosed in a porose cal- 

 careous sheath, destitute of lateral branches or appendages, con- 

 stricted just above the dichotomies, 40-135 fi (mostly 60-100 fi) 

 in diameter (decalcified ; often larger under a dichotomy), pits of 

 the calcareous sheath rounded or angular, mostly 5-18 /^ in diam- 

 eter; branches forming the stipe-cortex in compact cymose-fasti- 

 giate clusters, the ultimate divisions scarcely longer than broad, 

 truncate, truncate-obtuse, or very commonly with expanded trun- 

 cate-capitate apices, 8-50 fx in diameter. [Plate 3 ; plate 8, 

 FIGURES 8-10.] 



Type locality: lies des Saintes, near Guadeloupe, West 



Indies. 



Distribution: Southern Florida and West Indies. 



E. A NEW BAHAMIAN UDOTEA 



Udotea spinulosa sp. nov. 



Plants 7-8 cm. high from a fusiform or fasciculate-funicular 

 rhizoidal base, grayish green, strongly calcified ; stipe simple, sub- 

 terete below, flattened above, 1-2 cm. long, 3-4 mm. wide, corti- 

 cated, its surface nearly smooth or minutely velutinous-tomentu^ 

 lose : flabellum obovate with a subcuneate base, 5-6 cm. long, 4- 6 

 cm. wide, 0.4-0.6 mm. thick, longitudinally furrowed or striate, 

 not at all or very faintly zonate, rather rigid and brittle when dry, 

 lateral margins subentire, apical margin more or less laciniate and 

 commonly fractured, the surface appearing minutely corrugated or 

 spongiose-velutinous under a lens, becoming compact and nearly 

 smooth toward the base : filaments of the flabellum in ^-j layers, 



