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Metzgeria furcata

Posted by
Johan Dierckx (Wijnegem, Belgium) on 15 March 2012 in Plant & Nature and Portfolio.

Metzgeria furcata (NL: Bleek boomvorkje / EN: Forked Veilwort / DE: Gewöhnliches Igelhaubenmoos FR: ?) is the commonest thallose liverwort on trees and shrubs. It grows on a wide range of trees and shrubs, especially ash (Fraxinus excelsior), sycamore (Acer pseudoplatanus) and willow (Salix). Its thalli are just over 1 mm wide, and have a thick midrib that contrasts strongly with the remainder. They fork at the tip, and form yellowish-green patches on trunks and thicker branches. The margins are flat or slightly down-curved and have a line of hairs scattered along them; there are also hairs on the underside of the thallus. This dioicous plant only occasionally produces sporophytes, but inflorescences can be found on the underside of most patches. Narrow, more or less linear gemmae are sometimes present on the thallus margins.
(info on the species based on: "Mosses and Liverworts of Britain and Ireland - a field guide" published by the British Bryological Society)

Image: Ranst (B) - 24/02/2012

Canon EOS 400D 1/200 second F/5.6 ISO 200 60 mm

© Johan Dierckx

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Canon EOS 400D
1/200 second
ISO 200
60 mm