386 Mr. L. F. Ward on Mesozoic Dicotyledons. 
In 1856 Dunker* described and figured in the ‘ Paleonto- 
graphica’ four species from Blankenburg in addition to those 
of Zenker, and one cluster of fruit which he believed to belong 
to Credneria, and to indicate strongly that those ancient plants 
belonged to the Polygonacee. Zenker had divined that they 
might be amarantaceous. 
One year later Stiehlert reviewed in the ‘ Palesontographica’ 
the whole subject of the Cretaceous flora of the Harz Moun- 
tains, and added to all previous results the discoveries made 
by Hampe, a druggist of Blankenburg, in the marls near that 
place. Out of the numerous forms of Credneria he carves a 
new genus which he calls Httingshausenia, and of which he 
makes eight species. He admits seven species of Credneria, 
and figures several others which he calls new species, but 
without assigning specific names to them. 
Thus far America had contributed nothing to the flora of 
the Cretaceous, but in 1858 Heer described, in the proceedings 
of the Academy of Natural Sciences of Philadelphiat, eight 
species of Dicotyledons which had been collected by Dr. 
Hayden in Kansas and Nebraska. ‘These, however, he erro- 
neously believed to be Miocene. 
The next year Mr. Lesquereux § contributed a paper to this 
Journal, in which a number of fossil plants from Nanaimo, 
Vancouver’s Island, and from Bellingham Bay were described 
as Miocene. It is now known that Nanaimo is Cretaceous, 
and his paper enumerates six species of Dicotyledons from 
that locality. 
Nothing further appears to have been done until 1863, 
when Dr. Newberry || reported, in the ‘ Boston Journal of 
Natural History,’ upon certain fossil plants from Orcas 
Island, British Columbia, collected by the North-west Boun- 
dary Commission. He declared the horizon Cretaceous, and 
among the plants described were four Dicotyledons, 
* “ Ueber mehrere Pflanzenreste aus dem Quadersandsteine von Blank- 
enburg,” von Wilhelm Dunker. Palzeontographica, iv. 1856, pp. 179-185, 
tab. Xxxli.-xxxy. 
+ “ Beitrige zur Kenntniss der vorweltlichen Flora des Kreidegebirges 
im Harze,” von August Wilhelm Stiehler. Paleeontographica, v. pp. 45- 
80, Taf. ix.-xv. 
} “Fossil Plants of the Lower Cretaceous beds of Kansasand Nebraska,” 
by Oswald Heer, Proc. Acad, Nat. Sci. Phil, 1858, pp. 265, 266. 
§ “On some Fossil Plants of recent Formations,” by L. Lesquereux, 
Amer. Journ. Sci. 2, xxvii. 1859, pp. 359-366. 
|| “ Descriptions of Fossil Plants collected by Mr. George Gibbs, Geo- 
logist to the U.S. North-west Boundary Commission under Mr. Archibald 
Campbell, U.S. Commissioner,” by J. 8. Newberry, Boston Journ, Nat. 
Hist. vii. 1863, pp. 506-524, 
