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Isoetes (Quilwort)

Isoetes echinospora from Finland
Photo posted at funet.fi

 

Isoetes azorica from Portugal
Photo by J.P. Frahm posted online

 

Isoetes lacustris
Photo by J.C. Schou posted online

 

Isoetes echinospora spore case with cluster of megaspores, from Smallhanger Waste, near Sparkwell, Devon, England
Photo by David Fenwick posted online

 

Isoetes capensis megasporophylls and megaspores from Stellenbosch, South Africa
Photo by Lytton John Musselman, posted online

 

Isoetes riparia megaspore (female) illustrating small gametophyte (dark orange). Dark filaments are fungal hyphae. Photo by Natalia Pabon posted online.

 

Isoetes capensis microspores and megaspores from Stellenbosch, South Africa
SEM images by Lytton John Musselman, posted online

 

Isoetes life cycle from image posted online

 

Reconstruction of ancestral Isoetes beestonii Retallack and Tomiostrobus australis (Ash) Sadovnikov from Australian fossils. Image by Retallack (1997) posted formerly online.

Retallack, G.J. 1997. Earliest triassic origin of Isoetes and quillwort evolutionary radiation. J. Paleont. 71:500-521.

 

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