BSA Online Image Collection, Paleobotany

Welcome to the Botanical Society of America's online image collection. We hope you enjoy a browse through our members' contributions. Please note: each image acts as a link to a page containing more information, and a larger version of the picture. RETURN TO THE IMAGE MAP


Aglaophyton major (sporangium)	Asterophyllites (Calamites leaves)	Asteroxylon mackei (stem, x.s.)	Baragwanthia	Calamites sp.


Calamites sp.	Calamites sp.	Calamites (shoot apex)	Calamostachys binneyana (cone, l.s.)	Calamostachys binneyana (cone, x.s.)


Delnortea abbottiae - Permineralized leaf fragment This is a kodachrome of a permineralized leaf fragment of Delnortea (USNM 387477)	Delnortea abbottiae - Permineralized leaf fragment This is a kodachrome of a permineralized leaf fragment of the largest known fossil leaf of Delnortea (USNM 387473)	Delnortea abbottiae - Permineralized leaf fragment This is a kodachrome of a permineralized leaf fragment of Delnortea. The woody midrib, clearly visible on the slide, was used by William E. Stein, Jr., Ph.D. to create the polished thin-sections yielding the first images of a bifacial cambium and conducting xylem and phloem tissue of any Permian gigantopterid; shown as Figs. 23-36 (USNM 372427)	Heterangium americanum (phloem parenchyma, l.s.)	Heterangium americanum (phloem parenchyma, 1.s.)


Heterangium americanum (secondary xylem & phloem, x.s.)	Heterangium americanum (sieve areas)	Heterangium americanum (stem, x.s.)	Horneophyton lignieri (sporangium, l.s.)	Lepidodrendron f. selaginoides (leaf base w/ligule)


Lepidodrendropsis (leaf cushion)	Lepidodrendron sp.	Lepidodrendron sp. (early periderm)+B38	Lepidodrendron sp. (small stem, x.s.)	Lepidodrendron sp. (stele, cortex, x.s.)


Minerisporites mirabilis (f. Selaginella)	Molaspora lobata (megaspore, polar view)	Molospora lobata (megaspore, lateral view)	Rhynia gwynne-vaughani (stem, x.s.)	Spermatites sp. (seed-like megaspore, 100 X)


Sphenophyllum plurifoliatum	Sphenophyllum sp.	Stigmaria (axis, x.s.)	Thomasonia sp. (Lycopod megaspore)