Gomontia polyrhiza (Lagerh.) Flahault & Bornet

302 University of California Publications in Botany [Vol. 8
298	University of California Publications in Botany [Vol. 7
3.	Gomontia polyrhiza (Lagerh.) B. and F.
Plate 19, fig, 1
“Sporangia” irregularly and broadly clavate to nearly cylindrical,
up to 150/x diam., and 240/i long, producing usually several blunt, at
times slightly branched rhizoids at the smaller (proximal) end.
Growing in clam shells. Neah Bay, Washington.
Bornet and Flahault, Note sur deux nouveaux genres d’algues per-
forantes, 1888, pp. 161-163, Sur quelq. pi. viv. dans le test, calc., 1889,
pp. clii-clx, pi. 6-8 (as to combination only) ; Setchell and Gardner,
Phyc. Cont. I, 1920, p. 298, pi. 24, fig. 1. Codiolum polyrhizum Lager-
lieim, Cod. poly. n. sp. etc., 1885 (at least in greater part).
The above description is taken in part from the original of Lager-
heim and in part, from the material collected at Neah Bay. The
material from which Lagerheim drew his description was apparently
in the sporangial stage exclusively, as least he did not recognize a
sterile, or vegetative stage. The Neah Bay material, collected in May,
is likewise in a reproductive stage, or if the vegetative stage is present,
it and the sporangial stage could not be identified as belonging to the
same species, hence the incompleteness of the description.
The “sporangia” approximate so closely to the figures (especially
figs. 10, 11) and the description of Lagerheim as to make it sufficiently
safe to ally our plant witli his and to keep it distinct from the G. poly-
rhiza of Bornet and Flahault (G. Bornetii S. and G.).
The filaments of this species have been examined by us in a speci-
men distributed by Reinbold from Keil. Reinbold’s specimens have
“sporangia” largely of the Codiolum-type, both old and young, but
it also has an occasional “sporangium” of the Acrid-type (apparently
good G. Bornetii). Since Reinbold’s locality is not far distant from
Lagerheim’s type locality, it seems extreme!v probable that his plant
is true G. polyrhiza. The filaments in Reinbold’s specimens are so
close to those of G. Bornetii as figured by Bornet and Flahault (loc.
cit.) as to be indistinguishable.
j j -i/s-l	1 I
PLATE 19
Gomontia 'polyrhiza (Lagerh.) B. and F.
Fig. 1. A group of three "sporangia,” the two larger nearing maturity.
175.
Gomontia polyrhiza (Lagerh.) B. and F.
Plate 24, figvire 1
“Sporangia” irregularly and broadly clavate to nearly cylindrical,
up to 150/n diam., and 240yu long, producing usually several blunt, at
times slightly branched, rhizoids at the smaller end.
Growing in clam shells. Neah Bay, Washington.
Bornet and Flahault, Note sur deux nouveaux genres d'algues
perforantes, 1888, pp. 161-163 (as to combination only). Codiolum
polyrhizum n. sp. Lagerheim (at least in greater part).
The above description is taken in part from the original of Lager-
heim and in part from the material collected at Neah Bay. The
material from which Lagerheim drew his description was apparently
in the sporangial stage exclusively, at least he did not recognize a
sterile or vegetative stage. The Neah Bay material, collected in May,
is likewise in a reproductive stage, or if the vegetative stage is present
it and the sporangial stage could not be identified as belonging to the
same species, hence the incompleteness of the description.
The sporangia approximate so closely to the figures (especially
figs. 10, 11) and the description of Lagerheim as to make it sufficiently
safe to ally our plant with his and to keep it distinct from the G.
polyrhiza of Bornet and Flahault (G. Bornetii S. and G.).
The filaments of this species have been examined by us in a
specimen distributed by Reinbold from Kiel. Reinbold’s specimens
have “sporangia” largely of the Codiolum-type, both old and young,
but is also has an occasional “sporangium” of the Acarid-type
(apparently good G. Bornetii). Since Reinbold’s locality is not far
distant from Lagerheim’s type locality, it seems extremely probable
that his plant is true G. polyrhiza. The filaments in Reinbold’s speci-
mens are so close to those of G. Bornetii as figured by Bornet and
Flahault (loc. cit.) as to be indistinguishable.
PLATE 24
Gomontia polyrhiza (Lagerh.) B. and F.
Fig. 1. A group of three “sporangia,” the two larger nearing maturity.
X 175.
NEW YORK BOTANICAL GARDEN
02131893