Ser. RHODOSPERMEX. Fam. Rhodomelee. 
Puate XL. 
DASYA OCELLATA, Zarv. 
Gen. Cuar. Frond filamentous; the stem and branches mostly opake, 
irregularly cellular (rarely pellucid, longitudinally tubed), composed 
internally of numerous parallel tubes; the ramudi jointed, single- 
tubed. Fructification two-fold, on distinct plants; 1, ovate capsules 
(ceramidia) furnished with a terminal pore, and containing a tuft of 
pear-shaped spores; 2, lanceolate pods (stichidia), contaiming fetras- 
pores ranged in transverse bands. Dasya (4g.)—from 6ac%s hairy. 
Dasya ocel/ata; stems subsimple, beset on all sides with long, erecto- 
patent, dichotomous, pencilled ramuli; articulations three or four 
times longer than broad; pods lnear-lanceolate, attenuated, tapering 
to an acute point. 
Dasya ocellata, Harv. in Hook. Br. Fl. vol. ii. p. 335. Mack. Fl. Hib. part 3. 
p- 210. Wyatt, Alg. Danm. no.179. Harv. Man. p.97. Kiitz. Phyc. Gen. 
p. 414. 
Dasya simpliciuscula, 4g. Sp. Alg. vol. ii. p. 122 (1827). J. Ag. in Linn. 
vol. xv. p. 35. Alg. Medit. p. 118. 
CERAMIUM ocellatum, Gratel. in Hist. Soc. Med. Montp. 1807. p. 34: 
Hurcuinstia ocellata, 4g. Syst. p. 157 (1824). 
Has. On mud-covered rocks in the sea, rare. Annual. Summer. Abundant 
on the Pier, Torquay, Mrs. Griffiths. Whitsand Bay, Dr. Walker 
Arnott. Wicklow, W.H. H. Smerwich Harbour, Kerry, Mr. W. 
Andrews. Balbriggan, Mrs. Gregg and Miss Gower. Trevol, Rev. 
W.S. Hore. 
Groer. Distr. Atlantic coasts of France and Spain. Mediterranean Sea. South 
of England. East and South of Ireland. 
Dzscr. Root a small disc. Fronds one, two, or three inches high, tufted. 
Stems, in the smaller specimens, simple or once forked at the base; in the 
larger, twice or thrice forked, and occasionally having a few lateral, simple 
branches ; as thick as hog’s bristle, opake, cartilaginous, without external 
joints, the surface cellules being irregular. Ramuli clothing the stem and 
branches from the base to the apex, at which point they are remarkably 
dense, inserted quadrifariously, 3-5 lines long, slender, erect, several times 
forked near their base, cylindrical, the apices much produced, but not tapering, 
blunt. Articulations of the ramuli 3-4 times longer than broad, single- 
tubed. Fructification; Ceramidia (not yet found on British specimens). 
Stichidia or pods shortly pedicellate, borne on the ramuli, narrow, lanceolate, 
gradually tapering from the middle to an acute apex, straight or gracefully 
curved, slightly constricted at close intervals, producing in transverse bands, 
numerous small dark-purple tetraspores. Colour a brownish or a bright 
purple. Substance membranaceous, adhering to paper. 
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