Grid References: O.S. Explorer map 199 Lampeter. Main entrance: SN668626, Site centre: SN666628
Status: Notified SSSI
Tenure: The freehold of the reserve was purchased in 1983 with grant aid from NCC and WWF.
Size: 2.2 ha (5.9 acres)
Location and Access Notes
Public transport: The T21, 585 and 588 Aberystwyth to Tregaron buses pass the end of the lane to Maesglas Farm that takes you the remaining 1 km on foot.
Leave the A485 Tregaron to Aberystwyth road at SN668616 and follow the minor road past Maesglas farm and Fullbrook Mill. The reserve’s access stile is on the left immediately after crossing the mill stream. There is no parking near the reserve. Please do not park on the grass verge. Inaccessible for wheelchairs.
Description: The reserve comprises an area of flower-rich unimproved grassland including numerous flushes which are slightly base rich. An area of alluvial marsh borders the Nant Ty’n-y-swydd, and there is a small area of woodland and species-rich shrub thicket.
The reserve supports at least 100 flowering plants including Betony (7-10), Bog Asphodel (6-8), Devil’s-bit Scabious (7-9), Dyer’s Greenweed (6-10), Heath Spotted Orchid (5-7), Heath Wood-rush (5-7), an abundance of Lesser Butterfly Orchid (6-7), Marsh Lousewort (5-9), Petty Whin (5-7), Pignut (5-7), Sharp-flowered Rush (6-10), and Tormentil (4-9). The wet flushes are dominated by sedges – notably Carnation Sedge (5-7), Common Yellow Sedge (5-10), Flea Sedge (5-8), Star Sedge (6-9), and Tawny Sedge (6-8) in association with Bog Mosses. There is also Cross-leaved Heath (6-10), Marsh Arrow-grass (6-9), and insectivorous species Round-leaved Sundew (6-8) and Butterwort (5-8).
An abundance of butterflies and frequent dragonflies along the stream add interest, and both grassland and woodland fungi are well represented in autumn.
Water Voles use the vegetated stream.
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