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THE SEAWEEDS 
joints many times longer than their diameter, the terminal joint 
forming a strong mucro. Tetrasporangia numerous, globose, sessile 
on the ramelli. Height about 10 cm. 
Victoria and Tasmania. 
b. Fronds from the base ecorticate, but girdled below by a spongy stratum 
formed by the ramelli curving downwards from verticil to verticil. 
Wrangelia myriophylloides Harvey. 
Frond rigid, sparingly pinnately branched, ramelli repeatedly 
trichotomous, the subdivisions ending each in three oval cells, 
each tipped by a minute acuminate apical cell. Joints of ramelli 
constricted at the nodes. Ten cm. to 12 cm. high. 
Western Australia and South Australia (Encounter Bay, 
Investigator Strait, Robe). 
c. Fronds corticate far upwards from the base. 
Wrangelia velutina Harvey. 
Fronds cartilaginous, corticate, diffusely much branched, 
branches horizontally patent, once or twice compounded ; the 
Fig. 9 .—Wrangelia velutina : a, plant; b, apex of a 
branch, clothed with ramelli, and bearing 
a cystocarp; c, part of same with ramelli 
removed and cystocarp present; d, spores 
and paranemata; e , portion of a ramulus, 
with tetraspores; f, tetraspore; g, 
ramellus; h, mucronate apex of one of 
the divisions. (After Harvey.) 
