no ANNALS OF SCOTTISH NATURAL HISTORY 



to patches of snow unmelteJ in July or August " (Watson, " Outlines 

 Geograph. Distrib. Brit. PI." 1832, p. 157). lien Lawers (VVm. 

 Gardiner, 1842, in Herb. Brit.). Summit of Ben Avon (Wm. 

 Gardiner, 1844, in Herb. Brit. — dwarf state). One of the most 

 generally distributed of our arctic or alpine species ; and exclusively 

 limited to the mountainous districts on wet rocks and marshy places 

 by mountain rills. On the north side of Carn Tual, from 229 m, to 

 the summit. Descends to 150 m. in Donegal (" Cyb. Hib." ed. 2, 

 125). Along the Snowdon range in many places (\V. Brand, in 

 herb. Watson). In a small sjoring near the summit of Ben-na- 

 Bourd, 1832 (herb. Watson). 



76. Saxifraga umbrosa, L. — Found in Ireland only; and on 

 nearly all the mountains of Kerry, from sea-level up to 1027 m. on 

 Carn Tual (Hart, 1881, in " Proc. Roy. Irish Acad." 1882, p. 578). 

 " In Kerry, Connemara, and Waterford, the prevalent leaf-form is 

 one with strongly serrate margins, and truly crenate forms are very 

 rare in Ireland" ("Cyb. Hib." ed. 2, 128). Summit of Carn Tual 

 (J. Carroll, 1853, in Herb. Brit.). First reported as an Irish 

 plant by Rd. Heaton in 1650 (How, " Phytologia "). Accidentally 

 omitted by Linnaeus from first edition of Sp. Plantariim^ as it is 

 duly mentioned in Hort. Upsaliensis, p. 108, n. 2 (1748), under 

 Magnol's name. The two alpine Saxifrages which follow may be 

 noted here, but are not satisfactorily cleared up, and are possibly 

 forms of S. sponhemica. 



?7 7. Saxifraga platypctala^ Smith (181 1). — Recorded from 

 Snowdon (Dawson Turner, in herb. Smith, and Herb. Kew.). 

 "Mr. Turner gathered this Saxifrage upon Snowdon in 1802, and 

 communicated it to us long ago as a new species " (Smith, " Engl. 

 Botany," t. 2276, i May 181 1). 



?78. Saxifraga IcEtevirejis^ D. Don (1822). — "In very elevated 

 situations, upon moist rocks, on the mountains of Angusshire and 

 Aberdeenshire" (G. Don, in Smith, "Engl. Flora," ii. 280). 



79. Chrysosplefiium oppositifolium^ L. — Ascends to 1037 m. on 

 the mountains of the Breadalbane district, on damp and shady rocks 

 ("Fl. Perthsh." 144). "Grows very near the perennial snow" 

 (Watson, "Outlines Geograph. Distrib. Brit. PL" 1832, p. 157). 

 There is, however, no " perennial snow " on the Perthshire 

 mountains. 



Fam. 23. Crassulace^. 



80. Sedum roseuni^ Scop. — Common on damp alpine rocks in 

 the Breadalbane district, ascending to 11 75 m. on Ben Lawers 

 ("Fl. Perthsh." 146). Ben Lawers, near the summit (T. A. Sprague, 

 1895). Descends to sea-level in Galway. 



81. Sediim villosum, L. — Widely distributed in marshy places 

 on the mountains of the Breadalbane district, ascending to iioo m. 



