Picea farjonii

Name

Picea farjonii

Rank

Species

Generic Name

[Genus] Picea

Authors (Pub.)

Herrera F. Leslie A. B. Shi G. Knopf P. Ichinnorov N. Takahashi M. Crane P. R. Herendeen P. S.  

Publication

New fossil Pinaceae from the Early Cretaceous of Mongolia [2016/9]

Journal

Botany

Volume

94

Issue

9

Page number

887

Year

2016

Fossil Status

strobili (female)

Stratigraphy

Aptian

Strat. comment

Albian; Tevshiin Govi Formation

Location

Tevshiin Govi coal mine, central Mongolia

Latitude/Longitude

45:58′54″N

106:07′12″E

Paleoregion

Eurasia (Central Asia)

Data for Holotypus

Repository

Field Museum, Chicago, USA

Repository Number

PP55903

Num

1 A-D

Pub.

New fossil Pinaceae from the Early Cretaceous of Mongolia [2016/9]

Diagnosis

Seed cones cylindrical, elliptical, ovate to oblong, 5.4–11.2 cm long, 2.2–3.5 cm wide, terminal on stout peduncles that bear helically arranged, rudimentary bracts. Seed cones with ∼50–90 helically arranged, persistent, and imbricated bract–scale complexes borne approximately at right angles to the cone axis. Cone base convex, rounded, or cuneate. Cone apex truncate or rounded. Bracts simple, trilobed to triangular, with toothed margin; shorter than the ovuliferous scale. Bracts with a basal lobe, separating from ovuliferous scale at the lateral margins; lacking sclerenchyma and with two resin canals. Ovuliferous scales 0.6–3.0 cm long and 0.4–1.7 cm wide, elliptical to obovate, with emarginate to rounded apices and two abaxial resin canals. Margin of ovuliferous scale variable, with fine, spine-like teeth proximally, becoming entire medially and erose distally. Ovuliferous scale bearing two winged seeds on the adaxial surface. Seeds, 0.5–2.5 cm long, seed body ellipsoidal to obovoid, ∼2.3–8 mm long, with a conspicuous sclerotesta, lacking resin bodies. Seeds separated for approximately half their length by a triangular interseminal ridge. Seed bodies approximately to fully covered by wing tissue on the exposed side only. Vegetative shoots bearing helically arranged, peg-like leaf bases with “pulvini”. Leaves linear, flattened, with a smooth margin, epistomatic, with two bands of sunken stomata.