Locality
From Hollick (1930) (p. 92)
"Yukon River, north bank, about 6 miles above Nahochatilton (original No. 3AH16); collected by Arthur Hollick and Sidney Paige in 1903 (lot 3252) (pl. 52, fig. 2a). Yukon River, south bank, about 3 miles below Seventymile Creek (original No. 3AH4); collected by Arthur Hollick and Sidney Paige in 1903 (lot 3243) (pl. 65, fig. 3)."
Description
From Hollick (1930) (p. 92)
"Plate 52, Figure 2a; Plate 65, Figure 3"
"Leaves small, orbiculate, about 3 to 3.75 centimeters in diameter, peltate, entire, emarginate with a deep wedge-shaped apical sinus; nervation craspedodrome, pinnate subpalmate, consisting of a midrib and three pairs of strongly upward-curving secondary nerves, the lower pair with five upward-curving branches on their under sides that extend to and terminate in the margin; basilar veinlets, curved, anastomosed, radiating laterally and downward from the short, slightly enlarged basal portion of the midrib below the lower pair of secondary nerves; tertiary nervation conspicuously uniform, at right angles to the secondary nerves and branches throughout."
Remarks
From Hollick (1930) (p. 92)
"These leaves have the general outline and nervation of Credneria, and they might easily be mistaken for a species of that genus except for the peltation. The margin is described as entire, but critical examination reveals what appear like minute denticulations. These, however, may be due to the fine granular structure of the matrix."