This historic book may have numerous typos and missing text.
Purchasers can download a free scanned copy of the original book
(without typos) from the publisher. Not indexed. Not illustrated.
1874 Excerpt: ...sent to him, he writes that he thinks it belongs
more properly to the same group as Archseoptcris Halliana (=:
Sphenopteris laxa, llall), to which I had from the first supposed
it to be related. Prof. Lesquerenx, to whom I showed the specimens,
also supposed the species to belong to Paleeopleris of Schimper,
which is the same as Archseopleris, Dawson, the name Paleeopleris
being preoccupied. Some other high authorities on fossil botany,
however, have arranged similar forms under the names Asplenites and
Adianlites. From these remarks the student will readily understand
that in the present unsettled state of opinion in regard to the
limits between several of these older groups of fossil ferns, and
the consequent confusion existing in their nomenclature, it is
impossible to determine beyond doubt under what genns this species
may ultimately have to be ranged, when all of these questions can
be settled. It may therefore have to take the name Sphenopteris
Lescuriana, or Adiantites Asplenites) Lescurianus. Or, possibly, in
case the name Paleeopleris of Genitz should he found not to have
been based upon a tenable genus, so that Schimper's name
Palseopteris would have to replace Archeeopteris, our species may
have to be called Palseopteris Lescuriana. Specifically this form
will be readily distinguished from Cyc/. Archseopleris) Halliana,
by wanting the row of broad separate pinnules along its rachis
between the pinnae as seen in that species, as well as by its more
divided inner pinnules and more rigid pinnae. Prof. Dawson thinks
it more nearly related to his C. Palseopteris) Rogersi, though, on
comparison, he says he finds that the Rogersi has larger pinnse,
and more obtuse as well as larger pinnules, and a somewhat
different venation. Cyclopteris Virginiana, M....
|Country of origin:
Philosophical Society of Washington
||246 x 189 x 20mm (L x W x T)
||Paperback - Trade
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