Download PDF

556 University of California Publications in Botany [Vol.8
32. Myriogloia Kuck.
Fronds cylindrical, more or less profusely branched, flaccid and
lubricous, with distinct trichothallic growth ; medulla composed of
numerous colorless, equally large filaments slightly coalescent, giving
rise to numerous, narrow, long descending filaments and to an abun-
dance of short, straight or uncinate, cortical, colored filaments and
long, exserted, hair-like, assimilating filaments with cells densely con-
gested with chromatophores; reproduction in macroscopic plaifts by
zoosporangia borne among the cortical filaments.
Kuckuck, MS (fide, Oltmanns, Morph. und Biol, der Algen, 1922,
p. 19 et seq.).
We have already explained the situation in regard to this genus
and its position. It is closely related to Myriocladia but lacks the
distinct and persistent monosiphonous axial filament. Its relation to
the southern hemisphere Pacific species of Myriocladia is to be con-
sidered, with the strong possibility that, upon careful study, they
may be segregated generically. Myriogloia, in restricted sense, prob-
ably includes three species : M.
Andersonii (Farlow) Kuckuck {Meso-
gloia Andersonii Farlow, Report U. S. Fish Comm. 1876, p. 715), M.
caUitriclia (Rosenvinge) S. and G. {Myriocladia caUitricha Rosen-
vinge, Gronl. Havalger, 1893, p. 855), and M. capensis (J. Ag.) S.
and G. {Myriocladia capensis J. G. Agardh, Spec. Alg. vol. I, 1848,
p. 54). If the Mesogloia natalends Kuetzing is to be united with the
last, the garnet angia ( ?) depicted in Kuetzing 's figure (Tab. Phyc,
vol. 8, pi. 10, fig. II, e), if they really occur in the plant described and
figured, call into question our disposition of this entire family.
Myriogloia Andersonii (Farlow) Kuck.
Plate 47, figs. 8-10, plate 48, figs. 12-14, plate 49, fig. 17, and plate 76
Frond very gelatinous, solitary or gregarious, cylindrical, 8-30
cm. (up to 50 cm. high), 1-3 mm. diam., profusely branched; branches
mostly alternate, long and filiform, very slightly attenuated at the
extremities, when young beset on all sides with relatively long, mono-
siphonous, conspicuous filaments with band-shaped chromatophores,
disappearing when older ; color dark olive brown ; cortical filaments
moniliform, mostly uncinate, 6-9 celled, upper cells enlarged ; uni-
locular zoosporangia developing at the base of the cortical filaments,
uniformly distributed over the frond, pyriform, 36-45/* long, 18-21/*
broad.