FIELD NOTES [Botanical notes should be sent to P. M. Benoit, Pencarreg. Barmouth, Mer. Entomological Notes to P. M. Miles, Rhydychen, Abermagwr, Aber- ystwyth. Ornithological Notes to W. M. Condry, Felin-y-Cwm, Eglwysfach, Machynlleth. Mammal and other notes to D. G. Sansbury, Is-y-Coed, Talybont, Cards.] BOTANICAL Nasturtium microphyllum X officinale (Hybrid Watercress). Anglesey. In a swampy place in Newborough Warren on the 23rd June 1956 no other watercresses present (P.M.B.) first record for Anglesey. Alchemilla filicaulis (a microspecies of Lady's Mantle). Mer- ioneth. This, the least common of the Welsh Alchemillas, was discovered in May 1953 by Mrs. B. WELCH, in pastures at Brithdir, near Dolgelley. It has subsequently turned up in several other localities, all in the Dolgelley area near Benglog in three places in 1953, 1954 and 1956 respectively (P.M.B.), and near Dolserau (Mrs. H. M. Richards) and on Tir Stent (A. O. CHATER) in 1956. This species and the closely similar A. vestita are characteristic of calcareous rocks and pastures in mountain districts they are distinguished by having spreading hairs on the upper surface of the leaves. Records of such plants would be welcome. Saxifraga oppositifolia (Purple Saxifrage). Merioneth. On calcareous rocks in Pennant Dyfi (A. O. CHATER). An Arctic- alpine species at present known elsewhere in the county only in a single place on the north side of Cader Idris. Callitriche hamulata (a water starwort). Pemb. Stream by Mynachlogddu Post Office in 1955 and 1956. A curious form with a marked rosette of small diamond-shaped leaves and virtually no linear ones consequently looking quite unlike the common form of the species. Identified by the fruits and styles (Mrs. M. BARNES and P.M.B.). Carum verticillatum (Whorled Caraway). Merioneth. Redis- covered on the 1st June 1956 in quantity in a meadow by the River Glaslyn at Minffordd, Penrhyndeudraeth, an old locality given in D. A. JONES'S MS. Flora. This species is apparently unknown elsewhere in the county (Mrs. H. M. Richards). Calystegia sepium agg. (Greater Bindweed). Dr. S. M. WALTERS and Prof. D. A. WEBB write in the latest part of the Proceedings of the B.S.B.I. (vol. 2, pp. 22-23, 1956) that the so-called pink- flowered form ofC. sepium (Greater Bindweed) is most commonly a distinct species or hybrid, C. dahurica. In addition to pink flowers, this plant has narrower, thicker leaves than white-flowered C. sepium and is rather hairy. Such a plant grows in Merioneth by the railway crossing near Arthog Post Office this has arrow- rather
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