Picture: 1
Cwm Mawr, Tufa str.

Series of caddis larvae nets for trapping food. Cwm Mawr. 14/02/1975

Date: 14/02/1975

Picture: 2
Cwm mawr stream. Batrachospermum, Groenlandia, Caddis pool

Groenlandia (small summer form), Apium nodiflorum. Cwm Mawr, 1975
Marys species name: Groenlandia
Scientific name: Groenlandia densa
Common name: Opposite-leaved Pondweed

Date: 1975

Picture: 3
Cwm mawr stream. Batrachospermum, Groenlandia, Caddis pool

Groenlandia densa and tufa, Cwm mawr, Dunraven. 14/02/75
Marys species name: Groenlandia densa
Scientific name: Groenlandia densa
Common name: Opposite-leaved Pondweed

Date: 14/02/1975

Picture: 4
Cwm mawr stream. Batrachospermum, Groenlandia, Caddis pool

Groenlandia and Glaux. Cwm Mawr, 14/08/91
Marys species name: Groenlandia densa
Scientific name: Groenlandia densa
Common name: Opposite-leaved Pondweed

Date: 14/08/1991

Picture: 5
Cwm mawr stream. Batrachospermum, Groenlandia, Caddis pool

Groenlandia and Apium, Cwm Mawr. 14/08/91
Marys species name: Apium
Scientific name: Apium

Date: 14/08/1991

Picture: 6
Cwm mawr stream. Batrachospermum, Groenlandia, Caddis pool

Tufa fr. Pellia fabbronia choking Cwm Mawr stream, Dunraven. 1975
Marys species name: Pellia fabbronia
Scientific name: Pellia endiviifolia
Common name: Endive Pellia

Date: 1975