Asclepiadospermum ellipticum C.Del Rio, Su et Z.K.Zhou in Del Rio, Wang, Liu, Liang, Spicer, Wu, Zhou & Su

Plant Fossil Names Registry Number: PFN000894


Authors: C. Del Rio, T. Su & Z. K. Zhou

Rank: species

Genus: Asclepiadospermum C.Del Rio, Su et Z.K.Zhou in Del Rio, Wang, Liu, Liang, Spicer, Wu, Zhou & Su

Reference: Del Rio, C., Wang, T. X., Liu, J., Liang, S. Q., Spicer, R. A., Wu, F. X., Zhou, Z. K. & Su, T. (2020): Asclepiadospermum gen. nov., the earliest fossil record of Asclepiadoideae (Apocynaceae) from the early Eocene of central Qinghai-Tibetan Plateau, and its biogeographic implications. – American Journal of Botany 107(1): 126–138.

Page of description: 129, 132

Illustrations or figures: Fig. 3


Original diagnosis/description

Seed elliptical, tapering rapidly toward a blunt to slightly round and asymmetrical apex and rounded at the base; central part elliptical and irregularly spotted, surrounded by a thin margin with a straight median line corresponding to the trace left by the raphe from the apex to the center of the seed. Cells small (~30 μm wide), polygonal, and irregularly arranged.


The specific epithet ellipticum refers to the elliptical shape of the seed.


Paleogene, Eocene
The Lower Eocene Niubao Formation


Jianglang village, Bangor County, Central Qinghai-Tibetan plateau

Plant fossil remain

macro- and meso-fossils-embryophytes except wood


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