Loch Cleap, Loch Dubhar-sgoth, River Brogaig etc

There were two main objectives today:

  • Re-find the 1983 record for Potamogeton crispus (Curled Pondweed) in Loch Dubhar-sgoth, the only localised record for this species in the vice-county.
  • Fill in an apparently missing tetrad for Berula erecta (Lesser Water-parsnip) – known along the River Brogaig both upstream and downstream of NG46T.

Both of these were achieved:

Potamogeton crispus

Potamogeton crispus

Berula erecta

Berula erecta

As well as P. crispus in 1983, Loch Dubhar-sgoth had P. gramineus (Various-leaved Pondweed) recorded in 1970. Today, as well as both of these (though I have yet to check a specimen of the latter to make sure it is not Potamogeton x nitens (P. gramineus x perfoliatus)), I found P. berchtoldii (Small Pondweed) and P. perfoliatus (Perfoliate Pondweed). Quite a pondweed zoo.

Loch Corcasgil a little to the north had Potamogeton natans (Broad-leaved Pondweed) and P. polygonifolius (Bog Pondweed) only recorded in the past and that was how it looks today.

Loch Cleap had lots of standard Sparganium angustifolium (Floating Bur-reed) but also some with much broader leaves and inflorescence characters bordering on S. emersum (Unbranched Bur-reed) – see below!

Sparganium

Sparganium

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