Antediluvian phytology, illustrated by a collection of the fossil remains of plants, peculiar to the coal formations of Great Britain / By Edmund Tyrell Artis ... Including remarks on the systems of Count Sternberg, Baron Schlotheim, Professor Martius, and Mons. Brongniart; also communications from Professor Buckland and other eminent geologists.

  • Edmund Tyrel Artis
Date:
1838
Catalogue details

Licence: Public Domain Mark

Credit: Antediluvian phytology, illustrated by a collection of the fossil remains of plants, peculiar to the coal formations of Great Britain / By Edmund Tyrell Artis ... Including remarks on the systems of Count Sternberg, Baron Schlotheim, Professor Martius, and Mons. Brongniart; also communications from Professor Buckland and other eminent geologists. Source: Wellcome Collection.

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    8. Sacenaria. Stem without joints, or furrows, covered with conical rhom- boidal tubercles disposed in quincunx, having at their upper extremity an impression in the form of a disk.° 9. Stiegmaria. Stem without joints, or furrows; impressions rounded, distant, disposed in quincunx.‘ 10. Lycopopires. Leaves linear, or setaceous, without ribs, or traversed by a single rib, inserted all round the stem, or in a double row. The author subdivides this genus into four sections, as follows : A. Leaves narrow, lanceolate, inserted in a regular manner all round a stem having the characters of sagenaria. B. Leaves setaceous, inserted in a double row only; stem not reticulated. These he considers as the proper lycopodites. C. Leaves broad, without any apparent ribs, inserted irregularly all round the stem. These differ much from the rest of the genus. D. Leaves blunt, short, closely applied to the stem. 1]. Fixicrres. Frond disposed on a flat surface, symmetrical ; secondary rib simple, forked, or rarely anastomosing. These M. Brongniart further divides into five sub genera : A. Glossopteris. Frond simple, not jagged, traversed by a single mid rib, without distinct secondary ribs. B. Sphenopteris. Pinnules wedge shape, rounded or lobed at the ex- tremity ; ribs palmate or radiating from the base of the pinnule. C. Neuropteris. Pinnules rounded, not lobed, nor adhering to the rachis by their base ; ribs scarcely visible beyond the base, in general very distinct, and two forked. D. Pecopteris. Frond pinnatifid; pinnules adherent by their base to the rachis, traversed by a mid rib ; secondary ribs pinnate. ¢ The stems of this genus are referrable, in the opinion of M. Brongniart to those of plants belonging to the family of lycopodiacew, notwithstanding the great difference of size between them, and those of the recent plants of that natural order. ‘ These stems belong, in M. Bronguiart’s opinion, rather to plants of the natural order of aroidez, than to the euphorbiacew, or to the palms to which they had been ascribed by other authors. 62
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