Locality
USGS11614
Lat. 60° 36' 36"N Long. 164° 49' 18"W
Baird Inlet (C-8) Quad. Nelson Iisland.
Description
Leaf: simple (?); symmetrical (?); shape unknown; apex missing; base missing; margin entire; venation pinnate (?); primary midvein moderate, more or less straight; pectinal veins weaker than midvein, parallel to secondary veins; pectinal abmedial, departing pectinals at 50-90°, looping to join superadjacent abmedials at an acute angle; secondary veins moderate arising at an angle of 50-60°, uniformly curved, degree of curvature increasing near the margin to form a loop joining the superadjacent secondary at an acute (sometimes obtuse) angle, the most basal of the secondaries also have loops along their length on the abmedial side, course of loop forming veins inconsistent; tertiary veins percurrent, convex to straight forming an acute angle with both ad- and abmedial sides of the secondary and primary veins.
Remarks
It would seem that, although this specimen is apparently only a fragment of the entire leaf, at least half of the lamina is available for study. The brochidodromous pectinal abmedials indicate that almost all of the basal part of the leaf may be present. If this is the case the leaf would be orbicular in shape.
'Diospyros' rotundifolia Lesquereux (1874, p. 89; Plate 30, Figs. 1, 1a; 1892, p. 112; Plate 17, Figs. 8-11) appears to have many characters in common with this specimen although a reliable determination is impossible without details of the base and apex.
This leaf does in fact display a number of features present in the Ebenales (pinnate venation, brochidodromous secondary veins, absence of intersecondaries and moderately percurrent tertiaries) and therefore in the absence of conflicting evidence I have grouped this leaf with those displaying characters seen in the pinnate dilleniids.