Zygnema nitidum—In the lane by the cottage at Porkington.
Batrachospermum moniliforme—In the well at Pen-y-lan; and in other places near the Morda.
Draparnaldia plumosa—In the Morda, below Penylan bridge.
Meloseira varians—In the Morda, below Craigforda, and below Penylan bridge.
Fragilaria hyemalis—In the Morda, below Craigforda.
Diatoma vulgare—In the Morda.
,, flocculosum—In the pool, in the wood, at Llanforda.
Meridion circulare—In the well at Penylan; and in a ditch near the Morda, above Morda pool.
Cymbella minor—Penylan mill.