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.
1859 Excerpt: ...by the letters A, 13, C, &c.:
A.--2feuronteriflef: Fronds pinnate or bipinnatc. Secondary veins
either rising from a medial nerve vanishing above, or emerging and
branching from the base of the leaflets without a medial nerve. 1.
NoEOGEUATiiiA, 6 species, all from the old red sand stone. 2.
Opontopterts, 7 species, mostly from the louver coal. 3.
Bictygpteris, 1 species, from upper coal. L Cyclopteris, C.
jialetUita, Brongn., V7)itt?estya tltgan Newberry: lower coal. 5.
NEpiiROPTfcuis, 8 species, mostly from upper coal. "The genus can
scarcely be separated from the. following, most of its species
being only large deciduous leaflets attached around the main rachis
of Heuro-pterix" 6. Neuropteris, 27 species, mostly from the middle
and upper coal. B.--Sphenopteridece. Frond bi-tripinnatiiid, or
bi-tripinnate; pinnules mostly lobed, sometimes entire; nerves
pinuately forking, with a primary nerve slightly distinct,
flexuous; secondary nerves obliquely asce'nding in each division,
either simple or forking near the apex. 1. Spiienopteris, 27
species. The genus includes 2 groups, one having round, large,
entire leaflets, belonging to the lower coal, the other to the
upper. 2. Hymenopiiyllitks, S species. Six would be added to
ScJiteopterte by some authors, and these are mostly or wholly from
the upper coal; the others are from the lower. C.--PecopteridecF,
Frond simple? pinnate, bi-fdpinnate, or hi-tripinnatifid; pinnules
attached to the rachis by the whole base, sometimes united
together. Medial nerve well marked; secondary nerves emerging more
or less obliquely from the medial nerve, simple or furcate. 1.
Asplenites, 1 species, upper coal. 2. Alethopteris, 15 species,
appear to bo distributed through upper and lower coal. measures. 4.
|Country of origin:
||246 x 189 x 38mm (L x W x T)
||Paperback - Trade
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