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Oreomunnea grahamii
Oreomunnea grahamii F. Herrera, Manchester in F. Herrera, Manchester, Koll, C.A. Jaram. Monogr. Syst. Bot. Missouri Bot. Gard., 128: 127. 14 Sep 2014
- Name
- Oreomunnea grahamii
- Rank
- Species
- Generic Name
- [Genus] Oreomunnea
- Authors (Name)
- Herrera F.
Manchester S. R.
- Authors (Pub.)
- Herrera F.
Manchester S. R.
Koll R.
Jaramillo C. A.
- Publication
- Fruits of Oreomunnea (Juglandaceae) in the Early Miocene of Panama [2014/9]
- Journal
- Monographs in systematic botany from the Missouri Botanical Garden
- Volume
- 128
- Page number
- 127
- Year
- 2014
- Fossil Status
- fruits
- Stratigraphy
- Miocene
- Strat. comment
- Lower Cucaracha Formation
- Location
- Lirio East Outcrop, Gaillard Cut, southeastern Panama Canal, Panama (9°3’20’N, 79°39'40"W)
- Paleoregion
- America (North)
Data for Holotypus
- Repository
- Florida Museum of Natural History, Gainesville, USA
- Repository Number
- UF 621-59109
Data for Paratypus
- Repository
- Florida Museum of Natural History, Gainesville, USA
- Repository Number
- UF00621-59110 (Fig. 3D), UF00621-59111 (Fig. 3E, F), UF00621-59108 (Fig. 3G, J—L), UF00621-59112 (Fig. 3H, I)
- Diagnosis
- Nuts ovoid, elliptical in cross section, 8.3-10.1 mm long, 8.2-9.6 mm wide, 6.6—7.8 mm deep, rounded basally, pointed apically, smooth at the surface but with more or less conspicuous bands of dark and thick fibers, these bands separated from each other by 0.35-0.45 mm near the equator. In
equatorial cross sections, the nut appears divided by primary and secondary septa, creating 8 compartments, 4 on each side of the straight primary septum. Each compartment intruded by an additional partial septum, straight or curved, often bifurcated in the shape of a Y in the 4 exterior compartments as seen in cross section. Nutshell 0.11—0.56 mm thick, septa 0.10—0.89
mm thick, composed of anisodiametric cells (13-71 um in diameter) and abundant strands of fibers (>900 pm long and 13-19 um thick), fiber cells appear darke and thicker near the edge of the septa.
