USNM 37583 Credneria spatiosa Hollick  

Notes

Hollick (1930)

Pl. 59

 

 

Locality

From Hollick (1930) (p. 87)

"Yukon River, north bank, refuse dump at Blatchford's mine (original No. 3AH19); collected by Arthur Hollick and Sidney Paige in 1903 (lot 3258)."

 

Locality Map

 

Description

From Hollick (1930) (p. 87)

"Plate 59"

"Leaf large, about 18 centimeters in length by about 18 centimeters in width at a distance of 14 centimeters from the base, shape not known, asymmetric, broadest in the upper part, narrowed below to an oblique, truncate base; nervation consisting of a midrib and at least four pairs of subopposite secondary nerves, the upper ones flexuous, leaving the midrib at rather obtuse angles of divergence, the lower pair suprabasilar, simulating lateral primaries, leaving the midrib at acute angles of divergence, soon curving outward, with irregularly disposed, flexuous, occasionally forked branches on their under sides; marginal characters obscure; basilar veinlets horizontal or curved downward."

 

Remarks

From Hollick (1930) (p. 87)

"The general characters of this leaf are similar to those of the smaller allied species of the genus. It is clearly asymmetric, with a truncate base and an expanded upper part. Apparently it was broadest on the right side as represented in the figure, with the branches from the basal secondary on that side much larger and more strongly developed than on the other. It might, indeed, be taken for an exaggerated form of Credneria inordinata of the type depicted in Figure 3, Plate 56, and Figure 3, Plate 57."