Trapa ungeri

Name

Trapa ungeri

Rank

Species

Generic Name

[Genus] Trapa

Authors (Name)

Wójcicki J. J. Kovar-Eder J. B.  

Authors (Pub.)

Kovar-Eder J. B. Wójcicki J. J.  

Publication

A Late Miocene (Pannonian) flora from Hinterschlagen, Hausruck lignite area, Upper Austria [2002/2]

Journal

Acta Palaeobotanica

Annee/Jahrgang

2001

Volume

41

Issue

2

Page number

232

Year

2002

Fossil Status

fruits

Stratigraphy

Tortonian

Strat. comment

Pannonian

Location

Tagebau Heissler near Hinterschlagen, Hausruck lignite area, Upper Austria

Paleoregion

Eurasia (Europe)

Data for Holotypus

Repository

Naturhistorisches Museum Wien, Geologisch-Paläontologische Abteilung, Vienna, Austria

Repository Number

2000B0014/1

Num

Fig. 4: 1, Pl. 6 fig. 2

Pub.

A Late Miocene (Pannonian) flora from Hinterschlagen, Hausruck lignite area, Upper Austria [2002/2]

Diagnosis

Fruits slender, broadly obtriangular in outline with four horns; fruit 5.5–11.0 mm high (including neck), width 20– 38 mm (including upper horns); fruit about 1/4 to 1/3 as high as wide; head of the fruit pronounced, located below the margin of the upper horns; fruit head gradually attenuating into a conical, truncate neck of up to 3 mm length, usually slightly protruding from the upper horns; corona lacking; apical aperture 1.5–2.5 mm in diameter; a ring of upward pointing hairs closing the apical aperture usually visible; surface of the fruit head and neck finely ribbed; upper horns widely expanded, usually sword-shaped, 6–15 mm long, raised at the base, with characteristic conical tubercles at the base on the apical side of the horns, tubercles up to 1.5 mm long, upper horns gradually continuing into thin, reflexedly barbed spines (harpoons), 5–11 mm long; presence of mat areas excluded (in Latin areolae impressae – morphological structures present in some Trapa species at the base and/or apical part of the upper horns); lower horns narrowly ligulate in outline, strongly reflexed, straight, about 3–12 mm long, located approximately in the centre of the fruit body or somewhat below, usually with small, conical tubercles near the base, tubercles up to 0.8 mm long; at the base of the lower horn a small cavity is usually developed; frame of the fruit (in Latin linea [costa] media; in German Hauptrippe – protruding rib between upper and lower horns framing the fruit head) well pronounced with solid tubercles located between the upper and lower horns, tubercles 1.5–4.0 mm long and up to 1.5 mm wide near the base, their upper part sometimes dichotomously forked; basal part of the fruit body obtriangular truncate in outline with a few protruding longitudinal ribs; basal ring not developed; margin of the fruit base usually irregular; basal scar up to 1.5 mm in diameter.