Photo © John Birks |
Rare, in shallow water of lochs. Leaves c 5-15 cm long, 0.5-1 mm wide. Fruit c 2-3 mm long, 1.5-2 mm wide ID: Stipules in two parts, first joined to the leaf and forming a sheath, then at the top of this sheath a projecting ligule. The effect is rather like that of a grass leaf with its sheath and ligule. To distinguish from Fennel-leaved Pondweed fruits are necessary. These are rounded in the present species with the beak arising from near the centre of the top of the fruit. In Fennel-leaved Pondweed the fruit is very asymmetrical and also larger. Other features: Leaves tend to cling together more than in Fennel-leaved Pondweed which has them spread out in a fan-like way. |