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Illigera eocenica
Illigera eocenica Manchester, E. O’Leary Bot. Rev. (Lancaster), 76(1): 67. Mar 2010
- Name
- Illigera eocenica
- Rank
- Species
- Generic Name
- [Genus] Illigera
- Authors (Pub.)
- Manchester S. R.
O’Leary E. L.
- Publication
- Phylogenetic distribution and identification of fin-winged fruits [2010/3]
- Journal
- Botanical Review
- Volume
- 76
- Issue
- 1
- Page number
- 67
- Year
- 2010
- Fossil Status
- fruits
- Stratigraphy
- Eocene
- Strat. comment
- Clarno Formation
- Location
- White Cliffs, Jefferson County, Oregon, USA
- Paleoregion
- America (North)
Data for Holotypus
- Repository
- Florida Museum of Natural History, Gainesville, USA
- Repository Number
- UF262-17682
Data for Paratypus
- Repository
- Florida Museum of Natural History, Gainesville, USA
- Repository Number
- UF 238-19901, 19905, 19907, 19908, 262-17746 (Clarno Formation,
Oregon), DMNH 24518, UCMP PA 20645, 20669, USNM sn, (Green River
Formation, Colorado).
- Diagnosis
- Fruits widely elliptical, about twice as wide as high (23–28 mm wide
and 12–13 mm high), with two wings spreading in a common plane. Apex
rounded without stylar protuberance, base rounded in some specimens, to
attenuate along the pedicel in others, lacking perianth remnant or scar. With a
pair of creases forming a V configuration near the apex. Locular area
longitudinally fusiform, 2 mm wide, 5 mm high, smooth, bisected by a median
longitudinal crease in the axis of bisymmetry. A shorter, narrower, third wing
sometimes extends from the midline in a plane opposed to the two main wings.
Venation of the wing fanning outward from the locular area, with veins
dominantly transverse to the longitudinal axis. The spreading veins extend to the
margin and enter into a strong fimbrial vein.
