Plants
Grasses
Sighting 4554598

Poa (genus)

A Snow Grass at Mount Majura

Poa (genus) at Mount Majura - 21 Feb 2024 03:24 PM
Poa (genus) at Mount Majura - 21 Feb 2024 03:24 PM
Poa (genus) at Mount Majura - 21 Feb 2024 03:24 PM
Poa (genus) at Mount Majura - 21 Feb 2024 03:24 PM
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Identification history

Poa (genus) 23 Feb 2024 waltraud
Nassella trichotoma 22 Feb 2024 CarbonAI
Poa (genus) 22 Feb 2024 abread111

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9 comments

waltraud wrote:
   23 Feb 2024
either Poa sieb or Poa lab but I'm unable to id from image.
abread111 wrote:
   23 Feb 2024
So how do you tell which is which? What should I photograph? There are a few like this around...
waltraud wrote:
   23 Feb 2024
Ciaran might be able to help with that. I can't, sorry. I'm afraid, to identify which of the 2 species someone needs to examine the lemma and palea which requires a binoscop; experienced botanists may identify from growth habit, foliage colour etc in the field. I was told by botanist / plant ecologist of the Poa sieb at the south slope close to the iron bridge / Casuarina trail and the seepage site close to the Blue Metal Road. It never crossed my mind that P. lab naturally occurs on Mt Majura.
MattM wrote:
   23 Feb 2024
Poa lab should have leaf blades to 3.5 mm wide. Poa sieb should have blades to 0.7 mm wide.
waltraud wrote:
   23 Feb 2024
okay, thanks Mat. So if blade width wider than 3.5mm than Poa sieb. However, if <= 3.5mm it could be both?
MattM wrote:
   23 Feb 2024
Poa sieb has blades up to 0.7mm wide (<1mm). So if the blades are wider than 0.7mm it will be Poa lab.
waltraud wrote:
   23 Feb 2024
Matt in your former comment you said P lab blades to 3.5mm?
MattM wrote:
   23 Feb 2024
Correct. Poa labillardieri can have leaf blades up to 3.5 mm wide. Neither VICFlora nor PlantNet specify a minimum leaf blade width for Poa labillardieri. Poa sieberiana is stated to have leaf blades 0.2 to 0.7 mm wide. For the sake of simplicity let's assume that Poa sieberiana has leaf blades 0.2 to 0.7 mm wide and Poa labillardieri has leaf blades 0.8 to 3.5 mm wide.
abread111 wrote:
   23 Feb 2024
Thanks @MattM! I will carry a ruler, and practise with the ones in our garden.

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Location information

Sighting information

Additional information

  • 30cm to 1 metre Plant height
  • True In flower

Species information

  • Poa (genus) Scientific name
  • A Snow Grass Common name
  • Not Sensitive
  • Local native
  • Non-invasive or negligible
  • Up to 1822.74m Recorded at altitude
  • 101 images trained Machine learning

Record quality

  • Images or audio
  • More than one media file
  • Verified by an expert moderator
  • Nearby sighting(s) of same species
  • GPS evidence of location
  • Description
  • Additional attributes
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