Cunninghamia beardii

Name

Cunninghamia beardii

Rank

Species

Generic Name

[Genus] Cunninghamia

Authors (Pub.)

Buczkowski E. L. Stockey R. A. Atkinson B. A. Rothwell G. W.  

Publication

Cunninghamia beardii sp. nov. (Cupressaceae: Cunninghamioideae), anatomically preserved pollen cones from the Eocene of Vancouver Island, British Columbia, Canada [2015/11]

Journal

International Journal of Plant Sciences

Volume

177

Issue

1

Page number

000

Year

2015

Fossil Status

leafy twigs (with male cones & pollen)

Stratigraphy

Eocene

Location

Appian Way, Vancouver Island, British Columbia, Canada

Paleoregion

America (North)

Data for Holotypus

Repository

Royal British Columbia Museum, Victoria, British Columbia, Canada

Repository Number

AW 358 A bot, B1 top, B1 bot.

Num

fig. 1

Pub.

Cunninghamia beardii sp. nov. (Cupressaceae: Cunninghamioideae), anatomically preserved pollen cones from the Eocene of Vancouver Island, British Columbia, Canada [2015/11]

Diagnosis

Cluster of at least 18 pollen cones, subterminal on leafy branch, helically arranged. Ultimate leafy branch terminating in scale leaves, significantly increasing in diameter where pollen cones attached. Leafy twig with parenchymatous pith surrounded by cylinder of secondary xylem, parenchymatous cortex with numerous resin canals, hypodermis of thick-walled cells. Vegetative leaves amphistomatic, with large central resin canal abaxial to vascular bundle, elongate zone of transfusion tissue, nonplicate mesophyll, hypodermis three to four cells thick. Pollen cones at least 2 mm in diameter, produced in axil of bract; three scale leaves surrounding base of cone axis. Microsporophylls helically arranged. Pollen sacs abaxial, three per microsporophyll, elongate. Pollen subspheroidal; exine scabrate, orbiculate, no papilla evident.