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Carpinus tengchongensis
Carpinus tengchongensis J. Dai, B.-N. Sun in J. Dai, B.-N. Sun, S.-P. Xie, Z.-C. Lin, J.-Y. Wu, K.-Q. Dao Pl. Syst. Evol., 299: 646. 17 Jan 2013
- Name
- Carpinus tengchongensis
- Rank
- Species
- Generic Name
- [Genus] Carpinus
- Authors (Name)
- Dai J.
Sun B.-N.
- Authors (Pub.)
- Dai J.
Sun B.-N.
Xie S.-P.
Lin Z.-C.
Wu J.-Y.
Dao K.-Q.
- Publication
- A new species of Carpinus (Betulaceae) from the Pliocene
of Yunnan Province, China [2013/1]
- Journal
- Plant Systematics and Evolution
- Volume
- 299
- Page number
- 646
- Year
- 2013
- Fossil Status
- leaves
- Stratigraphy
- Piacenzian
- Location
- Tuantian Town open-cast diatomite mine, Tengchong County, Yunnan Province, P.R. China
- Paleoregion
- Eurasia (China)
Data for Holotypus
- Repository
- Institute of Palaeontology and Stratigraphy (LDGSW), Lanzhou University, Lanzhou, China
- Repository Number
- FTP-1-318-7
Data for Paratypus
- Repository
- Institute of Palaeontology and Stratigraphy (LDGSW), Lanzhou University, Lanzhou, China
- Repository Number
- FTP-1-008, FTP-1-315-1, FTP-1-317-16, FTP-1-320-5, FTP-1-320-15, FTP-2-155, FTP-2-215-91, FTP-2-215-83, FTP-2-223-1, FTP-2-305-4, FTP-3-224-25;
FTP-3-304-1
- Diagnosis
- Leaf blade ovate-oblong or elliptic, 7–13 cm long by 4.9–8.3 cm wide, with low length to width ratio (1.5–1.9); apex attenuate; base obliquely cordate;
leaf margin doubly serrulate, with medium to very small teeth; primary vein thick; secondary veins 13–15 pairs, craspedodromous, curved and branched near leaf margin; tertiary veins percurrent; higher-order veins orthogonally reticulate; areoles regular; veinlets absent; upper epidermis smooth, epidermal cells tetragonal and pentagonal, or elongate, anticlinal walls straight and moderately thick, periclinal walls slightly concave, areolas
well developed; lower epidermis thinner than upper epidermis, anticlinal walls straight or slightly rounded; stomata randomly orientated and anomocytic, broadly elliptical or rounded in shape, stomatal length quite large (average 34 lm), with double-layered stomatal rim; T-pieces present; trichome bases occur adaxially and abaxially.
