114 



L. HTLLIS-COLESrVAUX 



Fig. 30. H. minima. Small holdfast is present on upper specimen. Material from Enewetak 

 Atoll, Enewetak Islet, Quarry, 4 XII 75, Hillis-Colinvaux. Scale bar is 2 cm. (Photo- 

 graph by The Ohio State University Department of Photography.) 



Plants to at least 9 cm tall, usually bushy, from a single tiny holdfast 

 although at least occasionally there may be additional points of attachment ; 

 calcification moderate to heavy ; branching in a single plane except possibly 

 near the base, most commonly trichotomous, less commonly dichotomous; 

 segments may be brittle and glossy, hardly ribbed, frequently trilobed in the 

 lower half of the plant, trilobed to flattened- cylindrical to cylindrical in the 

 upper half, trilobed segments to 5 mm long and 4-5 mm wide, others to 4 mm 

 long and 3 mm wide. 



