Isoetes histrix

Isoetes histrix

'Reconstructions of Lepidodendron (far left, Late Carboniferous, ~50 m tall), Sigillaria (left, Late Carboniferous, ~40 m,), Valmeyerodendron (middle top, Early Carboniferous, 0.6 m), Protolepidodendron (top right, Middle Devonian, 0.2 m), Chaloneria (bottom middle, Late Carboniferous, 2 m), Pleuromeia (bottom right, Triassic, 2 m) and Isoetes (bottom far right, extant, 30 cm). '

'Reconstructions of Lepidodendron (far left, Late Carboniferous, ~50 m tall), Sigillaria (left, Late Carboniferous, ~40 m,), Valmeyerodendron (middle top, Early Carboniferous, 0.6 m), Protolepidodendron (top right, Middle Devonian, 0.2 m), Chaloneria (bottom middle, Late Carboniferous, 2 m), Pleuromeia (bottom right, Triassic, 2 m) and Isoetes (bottom far right, extant, 30 cm). '

Beautiful aquatic flora- quillwort (Isoetes sp.) and algae on Lake Judd - by Nick Fitzgerald

Beautiful aquatic flora- quillwort (Isoetes sp.) and algae on Lake Judd - by Nick Fitzgerald

Reconstructed trees from the Carboniferous in the Evolution Garden, Singapore Botanical Garden

Reconstructed trees from the Carboniferous in the Evolution Garden, Singapore Botanical Garden

Reconstructed trees from the Carboniferous in the Evolution Garden, Singapore Botanical Garden

Reconstructed trees from the Carboniferous in the Evolution Garden, Singapore Botanical Garden

палушнік азёрны (Isoetes lacustris)

палушнік азёрны (Isoetes lacustris)

Isoetes spp., quillworts

Isoetes spp., quillworts

Isoetes

Isoetes

Isoetes sp. commonly known as the quillworts . http://aquariumwaterplants.com

Isoetes sp. commonly known as the quillworts . http://aquariumwaterplants.com

Isoetes taiwanensis is a species of plant in the Isoetaceae family. It is endemic to Taiwan, and the only species of quillwort there. As other quillworts, it is a relatively small species, with erect leaves 7–24 cm (2.8–9.4 in) high. It grows in shallow ponds, submersed most of the year.[2] IUCN considers it critically endangered because of habitat loss.[1]

Isoetes taiwanensis is a species of plant in the Isoetaceae family. It is endemic to Taiwan, and the only species of quillwort there. As other quillworts, it is a relatively small species, with erect leaves 7–24 cm (2.8–9.4 in) high. It grows in shallow ponds, submersed most of the year.[2] IUCN considers it critically endangered because of habitat loss.[1]

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