FlocUlL.
ReevD ]jL
Ser. E ho d o s pekm ea !.
P la t e XL.
DASYA OCELLATA, Harv.
Gen. Chab. Frond filamentous; the stem and branches mostly opake
irregularly cellular (rarely pellucid, longitudinally tubed), composed
internally of numerous parallel tubes; the ramuli 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 ( s ricW ia ), containing fefea«-
s ranged in transverse bands. Dasya [A g )—from baavz,
D a s y a o c e lla fa ; stems subsimple, beset on aU sides with long, erecto-
patent, dichotomous, penoiUed ram u li; articulations tlmee or tour
times longer than b ro a d ; pods linear-lanceolate, attenuated, tapering
to an acute point.
D asya ocellata, Harv. in Hook. Br. M. vol. ii. p. 335. M a d c .F tm . part 3. ,
p. 210. Wyatt, Alg. Banm. X iO .W. Harv. Man. p. 91. Kutz. Phyc. Gtn.
p. 414.
D asya simpliciuscula, Ag. Sp. Alg. vol. ii. p. 133 (1827). L. Ag. in Linn.
vol. XV. p . 35. Alg. Medit. p. 118.
Ce r a m iu m oceUatum, Gratel. in Hist. Soc. Med. Montp. 1807. p. 34.
H u t c h in s ia ocellata, Ag. Syst. p. 157 (1834).
H a b . On mud-covered rocks in th e sea, rare. Annual. Summer. A bm d a n t
on th e Pier, Torquay, M rs. Griffiths. Whitsan d Bay, Dr. W a llm
A rn o tt. Wicklow, W. H . H . Smerwich Harbour, Kerry, M r .W .
Andrews. Balbriggan, Mrs. Gregg and M u s Gower. Trevol, Rev.
W. 8. Bore.
G e o g b .D i s t e . Atlantic coasts of France and Spain. Mediterranean Sea. South
of England. East and South of Ireland.
D e s c b . Boot a smaU disc. Fronds one, two, or t e e inches high, tufted.
Stem, in the smaller specimens, sunple or once forked at the base; in tne
larger, twice or thrice forked, and occasionally having a few lateral, simple
branches; as thick as hog’s bristle, opake, cartilaginous, without externa
joints, the surface ceUules being m-egular. Ramuh clothing the stem and
branches from the base to the apex, at which pomt they are remarkably
dense, inserted qnadi-ifarionsly. 3-5 lines long, slender, erect several times
forked near their base, cylindrical, the apices much produced, but not tepermg,
blunt. Artieulatiom of the ramidi 3 -4 times longer than broad, single-
tubed Fructijkation; Ceramidia (not yet found on British specimens).
Stichidm or pods shortly pedicellate, borne on the ramuli, narrow, lanceolate,
gradually tapering from the middle to an acute apex, straight or gracefuUy
L rv ed slightly constricted at close intervals, producing in transverse bands
numerous small dark-pm-ple tetraspores. Colour a brownish or a bnght
purple. Substance membranaceous, adhering to paper.