USNM 37488 Populus pseudostygia Hollick  


Hollick (1930)

Pl. 31 Fig. 7



From Hollick (1930) (p. 63)

"Chignik River, just below Long Bay, Alaska Peninsula (original No. 55); collected by W. W. Atwood and H. M. Eakin in 1908 (lot 5297)."


Locality Map



From Hollick (1930) (p. 63)

"Plate 31, Figure 7"

"Leaf ovate, slightly irregular in outline, entire or minutely denticulate, 2.75 centimeters in length by 25 centimeters in maximum width, tapering above to a blunt apex, rounded below to a broad, cuneate base; midrib curved, slender; nervation fine, craspedodrome (?), tripalmate with an exterior pair of basilar nervilles; lateral primaries ascending, irregularly branched on the outer or under sides; secondary nervation obscurely defined, merging into the tertiary nervation and forming a network of irregular areolae with fine nervilles terminating in the margin."



From Hollick (1930) (p. 63)

"This leaf is somewhat peculiar in the manner in which the primary, secondary, and tertiary nerves merge into one another, in this respect resembling certain of the smaller leaves of Populus stygia Heer (1882) p. 64, pl. 18, figs. 6 - 8) from the Cretaceous Atane beds of Greenland. In fact, if it were not that that species is described and figured as cordate at the base our specimen might be regarded as identical with it, especially when compared with Heer's Figure 6, in which the nervation is distinctly tripalmate, as in ours, thus differing from all the other specimens included in the species by Heer; and a similar form is also figured by Lesquereux (1892) (pl. 3, fig. 12) from the Dakota sandstone of Kansas. Our specimen, however, appears to be minutely denticulate, with the ultimate nervation craspedodrome, but these characters are very obscure, and they may be more apparent than real and due to the granular character of the matrix. In any event, our species may at least be regarded as closely allied to the small forms of Populus stygia."