256 
THE SEAWEEDS 
* Coeloclonium umbellulum (Harv.) Reinbold. 
= Chondria umbellula Harvey. 
Attachment a disc. Frond short, dwarfed, 2 cm. to 7 cm. long, sometimes 
solitary, sometimes in groups, often epiphytic, two or three times 
umbel lately or verticil! ately branched; ramuli obovate, clavate, joined very 
delicately. Cystocarps arranged on the middle of the ramelli singly, sessile, 
Fig. 114 . — Coeloclonium umbellulum : a and b, plants; 
c, apex of a ramulus, with conceptacles ; d, 
vertical section of a conceptacle; e, a 
ramulus, with tetraspores; f, tetraspores. 
(After Harvey.) 
ovate, constricted at the base. Tetrasporangia sparsely scattered over the 
upper part of the ramelli. Colour purplish, changing more or less when 
dry. Substance soft flaccid, succulent. Adheres to paper. 
South Australia (Investigator Strait, Eastern Bays), Western Australia 
(Rottnest and Garden Islands). 
Coeloclonium opuntioides (Harv.) J. Agardh. 
= Chondria opuntioides Harvey. 
Elongated, irregular, verticillately branched, the ramuli of the verticils 
often elongate, regular, more or less moniliform, simple or dichotomous; 
articulations delicately joined, lower ones cylindrical-elongate, the upper 
