Page:Journal of botany, British and foreign, Volume 34 (1896).djvu/280

 256 IRISH PLANTS OBSERVED IN JULY, 1895. Plantago maritima L. 8, 9. S. shores of L. Mask. Atriplex patula L. 8. Oughterard. — Vars. erecta Huds. and angustifolia (Sm.). 3. Ferrybank. Polygonum Convolvulus L., var. subalatum V. Hall. 8. Oughte- rard. — P. lapathifolium L. 8. Clonbur. 9. Cong. — P. maculatum Trim. & Dyer. 3. A few plants on a rubbish-heap at Ferry- bank. Oxyria digyna Hill. 8. Cliffs about Lough-na-dirk-more, Maam- trasna. Salix aurita X cinerea. 8. By the river at Maam. — S. aurita x repens. 8. Near Maam. — S. repens L. 8, 9. The form S. argentea Sm. is beautifully represented on the limestone S. of L. Mask, but shades off into other forms. The apparent absence of S. Caprea from all the places we visited is strange. Juniperus nana Willd. 8. By Lough-na-dirk-more, Maam- trasna ; scarce. Elodea canadensis Michx. This is now abundant in Loughs Corrib and Mask. Neottia Nidus-avis Eich. 8. Woods in the Ashford House demesne, near Cong ; Listera ovata also occurs there. Epipactis atrorubens Schultz. 8. Sparingly in a rocky valley on the Clonbur side of Cong, just within Co. Gal way. Habenaria alblda'R.'Br. 8. Eocky pastures at the foot of Mount Gable. — H. viridis E. Br. 9. S. of L. Mask ; scarce. — H. bifolia E. Br. 8. Near Maam. H, chloroleuca appeared to be common in that part of Mayo and Gal way. Iris Pseudacorus L. Only seen in flower at Maam, where it was the type, and not the more usual British var. acoriformis. Sparganium ramosum Huds., var, ynicrocajyum Neum. 8, 9. Frequent about Maam and Clonbur ; the only form seen. — S. ajine Schnitzl. 8. Plentiful at the E. end of L. Coolin ; here and there on the W. side of L. Mask. 9. S.E. corner of L. Mask. Potamogeton sparganiifolius Laestad. We could only find a single patch of this in the Maam river, but the quantity may vary with the season ; there was no trace of inflorescence on July 5th. The ap- pearance of the living plant strongly suggests that it may be a deep- water state of P. polygonifolius Pourr., which ascends to 1300 ft. in that neighbourhood. — P. heterophyllus Schreb. 8, 9. Not un- common in L. Mask, and in streams about Cong. — P. angustifolius Presl (P. Zizii Eoth). 8. The type is locally abundant on the N.W. side of L. Corrib, near Maam. Here, and in pools and streams about Maam (Dist. 8 and 9), occurs a somewhat different plant, which Mr. Bennett names **P. angustifolius ^ forma = P. borealis Tiselius olim.'' — P. pralongus Wulfen. 8. W. side of L. Mask, about three miles N. of Clonbur. 9. S.E. corner of L. Mask. Apparently quite local. — P. Jiliformis Nolte. 8. A single fruiting spike of this very rare Irish species was found floating near the shore, close to the first-named station for P. pralongus; further search was made, but unsuccessfully. Zannichellia palustris L. 9. Mill-pond at Cong. Eriocaulon septangulare With. 8. Abundant on the N.W. side