Trapa spectabilis

Name

Trapa spectabilis

Rank

Species

Generic Name

[Genus] Trapa

Authors (Name)

Wójcicki J. J. Kovar-Eder J. B.  

Authors (Pub.)

Kovar-Eder J. B. Wójcicki J. J. Zetter R.  

Publication

Trapaceae from the late Miocene of Austria and the European context [2005/12]

Journal

Acta Palaeobotanica

Volume

45

Issue

2

Page number

173

Year

2005

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

NHMW 1988/0138/26

Num

figs 4: 15, 5: 11

Pub.

Trapaceae from the late Miocene of Austria and the European context [2005/12]

Diagnosis

Fruits massive, obtriangular to broadly obtriangular in outline with four horns; fruit (9–)13–32 mm high (including neck), width (8–)23–42 mm (including upper horns); fruit about (0.3–)0.4–0.7 as high as wide; head of the fruit pronounced, its upper end located below the line joining the raised bases of the upper horns; neck well developed 0.5–2.5 mm high or fruit head gradually attenuating into a short conical truncate neck, usually not protruding from the margin of the upper horns; corona lacking; apical aperture (1.5–)2–3 mm in diameter; a ring of upward pointing hairs closing the apical aperture sometimes visible; surface of the fruit head and neck finely ribbed; upper horns widely expanded or slightly upward pointing (90°– 65°), narrowly triangular in outline, (8–)9–16 mm long, at least slightly raised at the base, usually with characteristic conical tubercles located abaxially at the base of the horns, tubercles up to 2 mm long, upper horns gradually continuing into thin, reflexedly barbed spines (harpoons), up to 13 mm long; presence of mat areas excluded; lower horns solid, narrowly triangular in outline, usually reflexed, straight, about (2?–)5–13 mm long, located approximately in 1/3–1/2(3/5) from the fruit base, usually with conical tubercles near the base on the abaxial side, tubercles up to 2 mm long; sometimes a small cavity is developed at the base of the lower horn; frame of the fruit well pronounced with solid tubercles located between the upper and lower horns, tubercles 0.5–4 mm long and up to 3 mm wide near the base, sometimes, their upper part is slightly dichotomously forked; basal part of the fruit body obtriangular truncate in outline, sometimes characteristically gently or abruptly narrowed at the base into a thick but smooth, ring-like structure; surface of the basal part of the fruit covered with a few protruding longitudinal ribs; basal scar 1–4 mm in diameter.