Alcainea eklundiae

Name

Alcainea eklundiae

Rank

Species

Generic Name

[Genus] Alcainea

Authors (Name)

Sender L. M. Doyle J. A. Upchurch G. R., Jr. Endress P. K.  

Authors (Pub.)

Sender L. M. Doyle J. A. Upchurch G. R., Jr. Endress P. K. Villanueva-Amadoz U. B. Diez J. B.  

Publication

Evidence on vegetative and inflorescence morphology of Chloranthaceae (Angiospermae) from the Early Cretaceous (middle–late Albian) of Spain [2021/3]

Journal

Journal of Systematic Palaeontology

Annee/Jahrgang

2021

Issue

10.1080/14772019.2021.1873434

Page number

10

Year

2021

Fossil Status

leaves

Stratigraphy

Albian

Strat. comment

Upper Member of the Escucha Formation

Location

Alcaine, Teruel Province, Spain

Paleoregion

Eurasia (Europe)

Data for Holotypus

Repository

Museo de Ciencias Naturales, Universidad de Zaragoza, Zaragoza, Spain

Repository Number

MPZ 2020/230

Num

Figs 4, 5

Pub.

Evidence on vegetative and inflorescence morphology of Chloranthaceae (Angiospermae) from the Early Cretaceous (middle–late Albian) of Spain [2021/3]

Data for Paratypus

Repository

Museo de Ciencias Naturales, Universidad de Zaragoza, Zaragoza, Spain

Repository Number

MPZ 2020/231 (Fig. 3A–C), MPZ 2020/232 (Fig. 3E). Referred specimens MPZ 2020/233, MPZ 2020/234, MPZ 2020/235, MPZ 2020/236, MPZ 2020/ 237, MPZ 2020/238, MPZ 2020/239, MPZ 2020/240 (Fig. 3D), MPZ 2020/241 (Fig. 3F), MPZ 2020/242 (Fig. 3G)

Num

Fig. 3A–C, Fig. 3E

Pub.

Evidence on vegetative and inflorescence morphology of Chloranthaceae (Angiospermae) from the Early Cretaceous (middle–late Albian) of Spain [2021/3]

Diagnosis

Leaves simple, elliptical, L:W ratio 2–2.5, pinnately veined, with few festooned semicraspedodromous secondary veins. Finer venation random reticulate. Marginal teeth symmetrical, with convex apical and basal sides, two lateral veins that join the medial vein below the apex, and an apical gland. Leaves opposite, attached to swollen nodes surrounded by a sheath formed by fusion of the leaf bases that bears two stipules on each side. Inflorescences compound spikes, lateral spikes bearing sessile flowers subtended by fanshaped bracts, with an androecium consisting of three laterally adjoining stamens.