412 Berry: Mesozoic FLORA OF ATLANTIC COASTAL PLAIN 
(?) Platanus Heerit Lesq. Rept. on Clays in N. J. 29. 1878. 
Platenus Heeru Heer, Fl. Foss. Arct. 67: 72. pl. 7. f. 1, 2; pl. 8. 
f. 1, 2a; pl. 9. f. 1-4. 1882. 
(?) Platanus Heerii Lesq. Créet. and Tert. Fl. 44. pl. 3. f. 1; pl. 7. 
Js $2 1883, 
Sassafras (Araliopsis) recurvatum Lesq. ibid. 57 (part). 1883. 
Sassafras cretaceum recurvatum Berry, Bot. Gaz. 34: 438. 1902. 
Platanus Heervi Berry, Bull. Torrey Club 37: 23. 1910. 
DEsCRIPTION: Leaves broadly rhomboidal in outline, more or 
less trilobate. Lobes, when developed, short and obtuse. Base 
decurrent. Petiole long and stout. Margin sublobate, undulate 
or irregularly dentate. Texture coriaceous. Primaries three, 
stout, diverging at acute angles. The lateral primaries are as 
stout as the midrib from which they branch in an opposite or 
subopposite position, either from the extreme base or a consider- 
able distance above the base. In the latter case there is often a 
prominent secondary given off from the midrib on either side 
below the primaries. The primaries may give off a few rather 
long straight craspedodrome secondaries to the rather full lateral 
margin or they may send off a stout lateral branch at varying 
distances above the base. Secondaries from the midrib few in 
number, stout, irregularly spaced, craspedodrome. Tertiaries 
transverse, platanoid. 
This species was described from the Dakota sandstone of 
Kansas by Professor Lesquereux, in 1872, who subsequently in his 
Cretaceous Flora confused it with Platanus or Sassafras recurva- 
tum. . The latter, if it really designates a species, must be restricted 
to the form figured by Lesquereux on plate ro, fig. 3 of the Cre- 
taceous Flora, which is decidedly different from his other figures 
on that plate. The latter are leaves of Platanus Heerii while the 
former must be referred to Sassafras cretaceum or mirabile. Not 
only is it distinctly trilobate but the margin is entire and the 
venation camptodrome, while in the leaves of Platanus Heerii on 
the same plate the form and margin are different and the venation 
is craspedodrome. Professor Heer correctly identified Platanus 
Heerti from the Atane beds of Greenland, and the forms which he 
figured from these beds as Sassafras recurvatum are distinct from 
Platanus Heerii and resemble Lesquereux’s fiz. 3 mentioned above. 
The writer, some years ago (1902, loc. cit.) in discussing Sassafras 
recurvatum, pointed out the composite nature of this form and 
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