Arceuthobium mengeanum (Göpp.) Sadowski, Seyfullah, C.A.Wilson, Calvin et A.R.Schmidt

Plant Fossil Names Registry Number: PFN000605

Act LSID: urn:lsid:plantfossilnames.org:act:605

Authors: E. M. Sadowski, L. J. Seyfullah, C. A. Wilson, C. L. Calvin & A. R. Schmidt

Rank: species

Basionym: Ephedra mengeana Göpp.

Reference: Sadowski, E. -M., Seyfullah, L. J., Wilson, C. A., Calvin, C. L. & Schmidt, A. R. (2017): Diverse early dwarf mistletoes ( Arceuthobium ), ecological keystones of the Eocene Baltic amber biota. – American Journal of Botany 104(5): 694–718.

Page of description: 699

Other combinations

Patzea mengeana (Göpp.) Conw. 1886

Types

Holotype n/n
Figures: pl. XVI, figs 248–250

Note: Göppert (1883: Von den Bernstein-Coniferen, insbesondere auch in ihren Beziehungen zu den Coniferen der Gegenwart, p. 48) specified that the type is from Menge's amber collection ("Bernstein-Sammlung von Menge"). According to Sadowski et al. (2017: Am. J. Bot., 104(5): 699) the type specimen is lost.

The holotype is re-figured by by Conwentz (1886: Die Angiospermen des Bernsteins, pl. XIII, figs 15-20) and his figures are reproduced by Sadowski et al. (2017: Am. J. Bot.,104(5): fig. 1H–M).

Conwentz (1886: Die Angiospermen des Bernsteins, p. 138) mentioned that "…später habe ich dasselbe [i.e. Amber specimen with holotype] in der Mitte der Länge nach durchgeschnitten. Fig. 16 zeigt den auf der linken Seite dieses Stückes enthaltenen Einschluss fünfmal vergrössert."

Original protologue

E. ramis articulatis aphyllis, articulis aequalibus cylindricis substriatis approximatis, amentis femineis 3—5 verticillatis, ovulis elongatis basin versus attenuatis snbsessilibus, longitudine fere articuli.


emended diagnosis [Conwentz (1886): Die Angiospermen des Bernsteins, p. 138]
Inflorescentiae racemosae rudimento, pedunculo teretiusculo riraoso glabro, bracteis late ovatis acutis integris semi-amplexicaulibus decussatis, floribus ternis ebracteolatis pedicellis teretiusculis tenuioribus articulatis tubo longe-ellipsoideo limbo obsolete quadrifido laciniis ovato-oblongis conniventibus, stigmate quadrilobo prominulo apice couoideo.

emended diagnosis [Sadowski et al. (2017): Am. J. Bot., 104(5): 699]
Internode cross section terete to angular. Bracts two-paired, decussate, squamate, broadly ovate, entire, apex acute. At least four fruits per node, 3.4–4 mm long, elongated-elliptic, divided, distal portion 25–50% of total fruit, distal zone with adnate 4-merous perianth; stigma 5-lobed.

Stratigraphy

Paleogene
Baltic amber derives from Priabonian to Lutetian sediments. (according to Sadowski et al. (2017: Am. J. Bot., 104(5): 699)

Locality

Baltic Sea coast

Notes