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A Morphological Investigation of the Unusual Cryptogeal Germination Strategy of Bunya Pine (Araucaria bidwillii)-An Australian Rain Forest Conifer.
Download1992
Burrows, G.E., Stockey, R.A., Boag, T.S.
The morphology of the cryptogeal germination sequence of Araucaria bidwillii (bunya pine) was studied. Individual seeds were 5-6 cm in length and 2.5-3.5 cm in diameter and had an average fresh weight of ca. 16 g. In mature seeds the embryo consisted of a cotyledon tube, hypocotyl, and root cap...
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A new voltzialean conifer, Emporia royalii sp nov. (Emporiaceae), from the Hamilton Quarry, Kansas.
Download2009
Stockey, R.A., Rothwell, G.W., Hernandez-Castillo, G.R., Mapes, G.
A new species of extinct conifer plants, Emporia royalii sp. nov. Hernandez-Castillo, Stockey, Mapes et Rothwell (Emporiaceae: Voltziales), is described from the rich fossil biota of the Late Pennsylvanian, Hamilton Quarry, Kansas. This conifer has lateral plagiotropic branches with simple and...
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Growth Architecture of Thucydia mahoningensis, a Model for Primitive Walchian Conifer Plants.
Download2003
Stockey, R.A., Mapes, G., Hernandez‐Castillo, G.R., Rothwell, G.W.
A large number of vegetative and fertile branching systems of Thucydia mahoningensis provide data for interpreting the growth architecture and life-history pattern of a primitive Paleozoic conifer. Internal anatomy is similar to modern conifers, indicating an arborescent life-history pattern....
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Permineralized Fruits and Seeds from the Princeton Chert (Middle Eocene) of British Columbia: Araceae.
Download1988
Cevallos-Ferriz, S., Stockey, R.A.
Some of the most conspicuous fruit and seed remains from the Middle Eocene Princeton chert locality (Allenby Formation) are assignable to the Araceae. Several thousand campylotropous, reniform, spiny seeds 2.5-3.2 mm long x 1.8-2.3 mm wide have been found dispersed in the chert. Two fruits, each...
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Vegetative Growth of Eorhiza arnoldii Robison and Person from the Middle Eocene Princeton Chert Locality of British Columbia.
Download1994
Anatomical studies of several thousand specimens of Eorhiza arnoldii Robison and Person rhizomes and their attached organs have added significantly to our knowledge of these Middle Eocene, semiaquatic dicotyledonous plants from the Princeton chert. Anatomical structure of Eorhiza was studied...