286 
THE SEAWEEDS 
Lophothalia hormoclados J. Agardh. 
= Dasya hormoclados J. Agardh. 
Frond tree-like, 20 cm to 25 cm. high, 2 mm. in diameter below, thickest 
towards the middle, somewhat tapering to the base, and much attenuated 
upwards, very smooth, bare of branches for 2 cm. to 5 cm., thence to the 
apex bushy, with long, alternate, more or less distinctly quadrifarious 
branches, the lower ones 2 cm. to 3 cm. apart, the upper gradually closer, 
and finally much crowded. Branches three to four times compounded in an 
alternate pinnate manner; the larger ones opaque, the smaller ones more 
and more articulate, and those that produce the ramelli pellucidly jointed, 
their joints being as long as broad, marked with about three tubes. Ramelli 
simple, contracted at the base, tapering to a fine point, their upper and 
lower joints short, the middle ones twice or three times as long as broad, 
and all contracted at the dissepiments. Cystocarps urceolate, with wide 
mouths, shortly stalked. Colour a fine crimson, substance flaccid, adhering 
to paper. 
South Coast of Australia to Tasmania. 
DOXODASYA Schmitz. 
Fronds as in Lothothalia , but four pericentral cells. Ramelli mono- 
siphonous, repeatedly divided, spirally or inordinately disposed, sometimes 
densely congested. Stichidia pedicellate, polysiplionous, rarely mono- 
siphonous. Cystocarps evolved from secondary articulations of the 
branches, short, mostly simple, supported on a monosiphonous pedicel. 
Doxodasya bolbocha&te (Harv.) Falkenberg. 
= Dasya bolbochaete Harvey. 
Frond 15 cm. to 35 cm. long, or more, three or four times branched in an 
alternate manner, the larger and smaller branches all virgate, long, simple 
and straight, densely clothed with pencilled, simple ramelli, 4 mm. to 6 mm. 
Fig. 131 . — Doxodasya Bolbochaete. 
Fig. 132 . — Doxodasya lanuginosa. 
