. Studies in fossil botany . Paleobotany. CYCADOXYLEAE 493 also contain both leaves and fructifications which may be of a Cycadean character. The leaves are referred to the genera Pteropliyllum and Sphenozamites} the' former re- calling the foliage of the recent Dioon, and the latter that of some species of Zamia. The agreement, in form and vena- tion, with typical Cycadean leaves, is sufficiently close to render it probable that the affinities of these fossils were with the Cycadophyta. The fructification referred to — Cycadospadix milleryensis, —is a very remarkable one, represented in
. Studies in fossil botany . Paleobotany. CYCADOXYLEAE 493 also contain both leaves and fructifications which may be of a Cycadean character. The leaves are referred to the genera Pteropliyllum and Sphenozamites} the' former re- calling the foliage of the recent Dioon, and the latter that of some species of Zamia. The agreement, in form and vena- tion, with typical Cycadean leaves, is sufficiently close to render it probable that the affinities of these fossils were with the Cycadophyta. The fructification referred to — Cycadospadix milleryensis, —is a very remarkable one, represented in Fig. 180. The axis bears numerous fim- briated sporophylls it), concave on their lower surface, and on the under side of each sporo- phyll two seeds {/) were borne. M. Renault, the discoverer, states that the sporophylls are spirally arranged, and regards the whole structure as consti- tuting a lax cone. Some of the specimens are inserted, almost at right angles, on a branch little thicker than the axis of the cone itself. Such an arrangement is not found among true Cycads, but the com- 1 See Renault, Flore fossile cfAuluii el d'Epiuac, Part ii. - Loc. —Cycadospadix millcrycu- sis. Fructification, consisting of an axis, bearing numerous iacini- ate sporophylls (/), each of which bears seeds (s) (probably two to each sporophyll) on its lower sur- face. Slightly reduced. After Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Scott, Dukinfield Henry, 1854-1934. London, A. and C. Black
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