Zamia nelliae

Name

Zamia nelliae

Rank

Species

Generic Name

[Genus] Zamia

Authors (Name)

Erdei B. Calonje M.  

Authors (Pub.)

Erdei B. Calonje M. Hendy A. Espinosa N.  

Publication

A review of the Cenozoic fossil record of the genus Zamia L. (Zamiaceae, Cycadales) with recognition of a new species from the late Eocene of Panama – evolution and biogeographic inferences [2018/6]

Journal

Bulletin of Geosciences

Volume

93

Issue

2

Page number

190

Year

2018

Fossil Status

foliage

Stratigraphy

Rupelian

Strat. comment

Gatuncillo Formation

Location

Buena Vista, Colon Province, Central Panama; locality numbered STRI loc. 290268; 9° 16´ 4.80˝ N, 79° 41´ 15.83˝ W.

Paleoregion

America (North)

Data for Holotypus

Repository

Florida Museum of Natural History, Gainesville, USA

Repository Number

UF 19531-70503 (STRI 36903)

Num

fig. 2A

Pub.

A review of the Cenozoic fossil record of the genus Zamia L. (Zamiaceae, Cycadales) with recognition of a new species from the late Eocene of Panama – evolution and biogeographic inferences [2018/6]

Diagnosis

Pinna lanceolate, tapering toward the apex; Apex acute; Margin entire; Venation parallel, veins closely spaced, more than twenty veins close to leaflet apex; Lamina hypostomatic; Stomata cyclocytic, in narrow bands of two to three ill-defined rows of stomata. Stomata arranged predominantly parallel, but often oblique or perpendicular to the long axis of the leaflet; Stomata isodiametric; Guard cells sunken surrounded by four to seven subsidiary cells; Abaxial ordinary epidermal cells parallel, elongated, in costal areas more elongated, anticlinals convex, non-angular; Adaxial ordinary epidermal cells parallel, elongated, linear, convex, non-angular with rounded corners; Rare one-celled trichome bases on both epidermis.