. Studies in fossil botany . Paleobotany. LYGINODENDRON 389 the qorrectness of the attribution. Further structural evidence is not wanting, as we shall see below. The cupule, which in general form has been com- pared to the husk of a hazel nut, was ribbed in its lower part and divided into lobes above (see Figs. 144 and 149); it sprang from the pedicel immediately below the base of the seed, around which it formed a. Fie. 147.—Lagenostoma Lomaxi. Apex of seed in median longitudinal section through micropyle. r, palisade-layer; ot, outer; /./., inner wall of canopy (integument); s, space betwee
. Studies in fossil botany . Paleobotany. LYGINODENDRON 389 the qorrectness of the attribution. Further structural evidence is not wanting, as we shall see below. The cupule, which in general form has been com- pared to the husk of a hazel nut, was ribbed in its lower part and divided into lobes above (see Figs. 144 and 149); it sprang from the pedicel immediately below the base of the seed, around which it formed a. Fie. 147.—Lagenostoma Lomaxi. Apex of seed in median longitudinal section through micropyle. r, palisade-layer; ot, outer; /./., inner wall of canopy (integument); s, space between canopy and nucellus ; fie, cavity of pollen-chamber ; e, its orifice ; cc, central column of pollen-chamber ;fig, pollen-grains ; fil, part of nucellus supporting pollen-chamber ; mg, membrane of megaspore. >: about 50. After Oliver. Univ. College Coll. R 1. perfectly free envelope (see diagram, Fig. 148). The pedicel was traversed by a single concentric and mesarch vascular strand, which, before entering the chalaza of the seed, gave off a number of bundles (probably nine or ten) into the cupule; the cupular bundles were branched, and appear to have been collateral and mesarch in structure. There is a detailed agreement between the strands of the pedicel and cupule and those of the. 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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