Myrica aspera Lesq.

Plant Fossil Names Registry Number: PFN001481


Author: C. L. Lesquereux

Rank: species

Reference: Lesquereux, C. L. (1892): The flora of the Dakota Group: A posthumous work. – Monographs of the United States Geological Survey 17: 1–400, 66 pls.

Page of description: 66

Illustrations or figures: pl. 2, fig. 11


Figures: pl. 2, fig. 11

Note: Lesquereux (1892: Monogr. U.S. Geol. Surv. 17: 220) stated he had had two specimens belonging to this species, one of them he figured on pl. 2, fig. 11.

designated in Wang, H. & Dilcher, D. L. (2018): Early Cretaceous angiosperm leaves from the Dakota Formation, Hoisington III locality, Kansas, USA. – Palaeont. Electr. 21(3): 34A (49 pp.). on page 10
Plant Fossil Names Registry Number: PFN001948
Previously published illustration or figures: pl. 2, fig. 11 in Lesquereux, C. L. (1892): The flora of the Dakota Group: A posthumous work. – Monogr. U.S. Geol. Surv. 17: 1–400, 66 pls.

Note: Wang and Dilcher (2018: Palaeont. Electr., 21(3): 10) designated as the lectotype Lesquereux's figuered speciemen.

Original diagnosis/description

Leaves coriaceous, linear-lanceolate, slightly falcate; narrow, cuneiform and entire at base, crenulate-dentate above; median nerve thick; second-aries strong, curved in traversing the blade, simple or forking at the apex; surface rough.

Emended diagnosis

Wang and Dilcher (2018: Palaeont. Electr., 21(3): 10):
Lamina margin toothed; serrate axes inclined to the tangent of margin, serration type straight or convex-straight or convex; tooth simple, spacing irregular; sinus rounded; three veins entering each tooth with one medial secondary vein or branch from secondary vein, two accompanying veins from basal and apical side, these two veins joining superadjacent veins of the same order to form loops before entering tooth. Primary venation pinnate; primary vein stout, multi-stranded, course curved. Secondary venation mixed craspedodromous (most of the secondary veins terminating at the margin and the rest brochidodromous); secondary veins thin relative to primary vein, subopposite; originating from primary vein at moderate acute angles, uniformly apically curved before entering the tooth or running along the basal side of tooth before terminating on the tooth with superadjacent secondary veins. Intersecondary veins present, composite. Tertiary veins thin, orthogonal reticulate, forming irregular meshes. Quaternary vein orthogonal reticulate, forming imperfect areoles. Veinlets simple, linear or curved.


Cretaceous, Upper Cretaceous, Cenomanian
Dakota Group


United States
Pipe Creek, Cloud County, Kansas

Plant fossil remain

macro- and meso-fossils-embryophytes except wood


PFNR Administrator on 2020-12-30 14:26:21

Saša tam měla jako holotyp "USNM P 50061" ze Smithonian, ale vůbec nevím, odkud ta informace je
jw, 30. 12. 2020

Use comments to notify PFNR administrators of mistakes or incomplete information relevant to this record.