Posts tagged with Asplenium gracillimum

Snares Islands Flora: the ferns

  • Catchments sloping to the east on North East Island. Image: Antony Kusabs, Te Papa.
  • Bare substrate and titi / mutton bird burrows in Olearia lyallii forest, a common site on North East Island. Image: Antony Kusabs, Te Papa
  • Underside of Asplenium scleroprium frond showing sori extending to lamina margins. Above Hoho Stream, North East Island. Image: Antony Kusabs, Te Papa
  • Asplenium scleroprium, above Hoho Stream, North East Island. Image: Antony Kusabs, Te Papa

There are currently five recognised species of fern on the Snares Islands, the closest sub-antarctic island group to New Zealand. North East Island, the main island of the Snares group, slopes gently downhill from the tall, tussock covered western cliffs towards the forested east coast, creating four small catchments, which drain into Boat Harbour and Hoho Bay.  This combination… Read more »

Is your hen and chickens fern a fake?

  • The cave spleenwort, Asplenium cimmeriorum, is related to the hen & chickens ferns but doesn't produce bulbils. It is found in limestone areas, including caves, around Waitomo and the north-west of the South Island. Photo by Leon Perrie, Curator. (c) Museum of New Zealand Te Papa Tongarewa.
  • The false hen & chickens fern - Asplenium ×lucrosum - has dimorphic, or two very different looking, fronds on the same individual. The fronds with spore-producing structures have much narrower frond segments than fronds without. This difference in form can even occur within a single frond if it has regions with and without reproductive structures. Asplenium bulbiferum and Asplenium gracillimum do not have dimorphic fronds. Photo by Leon Perrie, Curator. (c) Museum of New Zealand Te Papa Tongarewa.
  • Asplenium gracillimum with narrow frond segments. These resemble the fertile fronds of Asplenium ×lucrosum (see below), but they can be distinguished by all of the fronds having narrow segments, rather than having both broad (when without spore-producing structures) and narrow (when with spore-producing structures) segments. Photo by Leon Perrie. (c) Leon Perrie, Wellington.
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Are you growing a hen & chickens fern at home? If so, chances are it’s a fake, unless you dug it out of the bush. Hen & chickens ferns get their common name from their production of bulbils, or vegetative outgrowths, on the upperside of their fronds. These bulbils are the ‘chickens’ and the fronds… Read more »