Wednesday, 18 September 2013

ID interlude

(At Dalbeath Marsh LNR)
Vegetative key - keyed out Alder

Flowering Plant
Lvs aerial
Margin toothed
Lvs Alternate
-> N

Not thorny
Tree/Shrub (>30cm)
Lvs not white-hairy and without scales
Lvs deciduous
Lvs with 2ndry veins parallel ending in teeth

Buds on 2-3mm stalks
Lvs without stellate hairs, wood turning orange when cut
Leaves truncate or recute at apex, 4-7 pairs of 2ndary veins
(Lvs 3-9cm, obovate, rounded or cuneate at base)
-> Alder, Alnus glutinosa

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