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Rhus republicensis
Rhus republicensis S. Flynn, DeVore, Pigg Int. J. Pl. Sci., 180(6): 000 [4] 468. 6 Jun 2019
- Name
- Rhus republicensis
- Rank
- Species
- Generic Name
- [Genus] Rhus
- Authors (Pub.)
- Flynn S.
DeVore M. L.
Pigg K. B.
- Publication
- Morphological features of sumac leaves (Rhus, Anacardiaceae), from the latest Early Eocene flora of Republic, Washington [2019/6]
- Journal
- International Journal of Plant Sciences
- Volume
- 180
- Issue
- 6
- Page number
- 000 [4] 468
- Year
- 2019
- Fossil Status
- leaves
- Stratigraphy
- Ypresian
- Strat. comment
- 49.42 +/- 50.54 Ma / Tom Thumb Member of the Klondike Mountain Formation
- Location
- locality 8428 (also known as B4131), Boot Hill, Republic (Ferry County), Washington, USA
- Paleoregion
- America (North)
Data for Holotypus
- Repository
- Stonerose InterpretiveCenter, Republic, USA
- Repository Number
- SR 10-29-20AB
Data for Paratypus
- Repository
- Stonerose InterpretiveCenter, Republic, USA
- Repository Number
- SR 92-05-05 (fig. 2B, 2G); SR 97-03-15AB (fig. 2C, 2D, 2H)
- Diagnosis
- Leaves pinnately compound, leaflets sessile, suboppositely attached; petiole 6 cm long, rachis 10.5 cm long, total leaf at least 16.5 cm long; rachis with wing up to 5 mm at widest, midvein of wing 1.1 mm wide; secondary veins
of rachis extending laterally at an acute angle, sometimes bifurcating;
leaflets ovoid to obovoid, 1.8–5.7 cm long (xp5.0, np 5) # 0.7–2.5 cm wide (x p 1.9, n p 8) with a L∶W ratio 2.2–3.1∶1 (xp2.6, np5), apex and base acute; venation pinnate, primary vein producing secondary veins suboppositely along its length; secondary veins narrow, unevenly spaced, becoming more
closely spaced toward apex, secondaries bifurcating near margin or within lamina, branches entering either a tooth or sinus; intersecondaries fairly common; margin serrate, becoming more prominently toothed apically, teeth with rounded apexes with distal and proximal flanks convex. Sinuses variable.
