119
I li I
ations that each of the cells of Draparnaldia glomerata ought
to be considered as a receptacle whence the reproductive
bodies formed at the expense of the green matter issue under
the form of rounded vesicles themselves being filled with
endochrome.” — M. Deeaisne, Mémoire sur la Classification
des Algues, p. 314.
8. D R A PA R N A L D IA Bory.
Char. F ilam en ts free, not immersed in gelatinous fluid.
Draparnaldia Bory, in Annales du Museum, vol. xii.
Charospermum Link, in Hort. Phys. 5. Batrachospermum
in part, Vauch. Hist, des Conf.
“ I t is to Draparnard that I dedicate this genus, Avhich
forms the subject of this new memoir. Those who have
been acquainted with tha t naturalist, alone know all that
he was capable of : active, indefatigable, he Avas fitted for
studies the most diAærse. Wise and prudent, also timid in
his researches, he hastened not to publish ; he collected facts,
he matured them, he Avished his AVorks to be without reproach.
Misfortunes and death have surprised him before
the execution of his projects, his career is closed before his
Avritings have established his réputation. Scarcely a fcAV
phrases, escaped from his pen, and committed to paper, remain
; and the loss of treasures which he had collected in
his memoirs occasions the greater regret to those who loved
him for cherishing the sciences as he cherished them.
“ I could doubtless have selected, amongst so many rare and
ncAV vegetables which presented themselves to me in my
voyages, — I could have found, I say, some genus more analogous
to the beauties of his spirit, upon which to place the
name of Draparnard; majestic palm trees, brilliant w ith '
vigour, reigning over the forest, should perpetuate his remembrance.
B u t the modest manes of my friend, have they not
approved my choice ? They will smile on tha t which I have
done. May his name live amongst the Confervoe, which were
his dearest study !” — Bory.
Kfitzing refers the genus Draparnaldia to his Ectospermeæ,
I placing it immediately before Ectocarpus, and of course
assigning ^ to it lateral external fructification. Certain
species hitherto associated Avith the genus Draparnaldia
Kfitzing has removed therefrom; these are D. stellaris,
AA’hlch may he identical with my D. condensata, and D. tenuis,
and constituted a new genus for them, under the name of
Stygeoclonium ; this genus is not even placed in the same family
Avith Draparnaldia, but in that of Ulothriceoe, of which Zywy-
bya zonata forms the type. The following are the definitions
of the family and genus.
“ Ulothriceoe.
Trichomata mucosa tenerrima, cellulæ coleogonimicæ, substan
tia gonimica in fascias transversales disposila, postremo in
opseospermata hologonimica plerumquo q u ad rip a rtita tran s-
iens.”
“ Stygeoclonium Ktz.
“ Trichoma tenerrimum, ramosum, ramulis simplicibus
subulatis obsessum ; cellulæ gelineæ tenuissimæ, abbreviatæ ;
amylediæ m fasciam transversalem collapsæ, tandem in opseospermata
q u a te rn a ta tu rg id a transeúnte s.”
I cannot myself think tha t any essential difference exists
betAveen the reproduction of Draparnaldia tenuis, &c. and
other Draparnaldice. I have myself occasionally observed the
quaternary division of the endochrome in the smaller branches
of, I believe, all the species of Draparnaldice : the circumstance
of the occurrence of this disposition in certain species of the
genus more frequently than others does not seem to me
to call for their separation from tha t genus altogether; yet
Kfitzmg has not merely formed a new genus for them, but
has referred this genus to a distinct family, _ a family which
does indeed manifest a close affinity with Draparnaldia, but
which Kfitzmg places in his arrangement at some distance
therefrom. The genus Lynghya, of which L . zonata forms the
type of the family Ulothriceoe, accords with Draparnaldia in
the extreme mucosity and flexibility of its filaments, in possessing
the second mode of growth of the cells, viz. that of
lateral developement, in the endochrome being arranged in