. Studies in fossil botany . Paleobotany. LYGINODENDRON 395 probability of the Splienopteris The character of the seed itself suggests the presence of a " ; In Splienopteris Dubuissonis, a Lower Coal - measure species from Brittany allied to J>. Hbningliausi, M. Grand'Eury has ob- served six-lobed cupules, in some cases still con- taining the seeds, situated at the extremity of long, slender pedicels, identi- cal with the ultimate ramifications of the The specimens de- scribed by Stur, Arber, and Grand'Eury are all preserved in the form of impressions ; they
. Studies in fossil botany . Paleobotany. LYGINODENDRON 395 probability of the Splienopteris The character of the seed itself suggests the presence of a " ; In Splienopteris Dubuissonis, a Lower Coal - measure species from Brittany allied to J>. Hbningliausi, M. Grand'Eury has ob- served six-lobed cupules, in some cases still con- taining the seeds, situated at the extremity of long, slender pedicels, identi- cal with the ultimate ramifications of the The specimens de- scribed by Stur, Arber, and Grand'Eury are all preserved in the form of impressions ; they supplement, in a most satisfactory manner, the evidence of the structural specimens, and leave no doubt that the seeds of the Lyginodendron group were borne on the rachis of the frond. The analogy of the pollen- bearing organs, next to be described, establishes a presumption that the fertile rachis formed part of the same frond which elsewhere bore vegetative leaflets. The well-known seed Lagenostoma ovoides, of which 1 Arber, "Some New Species of Lagenostoma,a Type of Pteridospermous Seed," Prof. Roy. Sec. (B) vol. Ixxvi. 1905. 2 Grand'Eury, " Sur les Graines de Splienopteris," etc., Comptcs Kendus t. 141, p. 812, 151.—Lagenostoma Sinclair!. Two seeds, enclosed in lobed cupules, and borne termin- ally on branches of the rachis. x 5. 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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