1 66 ANNALS OF SCOTTISH NATURAL HISTORY 



piloso-pubescenS) Syme, I.e., C. mutabile, var. alpicola, Grenierv 

 " Monogr. Cerast." 71 (1841). There is a series of intermediates 

 varying in the amount of indumentum, until it is reduced to a 

 minimum in C. alpinum, var. glabrum, W. "Sp. Plant." ii. 815 

 (1799), an arctic and high alpine form not found on the Scottish 

 mountains. Ben Dearg (in Ross-shire) up to 1006 m. (G. C. Druce, 

 1902). 



Var. compaction, Bab. Man. ed. 8 (1881). At 1026 m. on Ben 

 Nevis (J. Sadler in "Trans. Proc. Bot. Soc. Edinb." xiii. 50-54 

 [1878]). Ben Ein, at 1006-1066 m. (E. S. Marshall, 1889, in 

 Herb. Brit.), and associated with the other forms of C. alpinum 

 on Ben Lawers (E. S. Marshall ex F. B. White, "El. Perthsh." 81). 

 Stob-Coire-an-Easain, Glen Spean, at 1037 m. (E. S. Marshall, 

 1896, in Herb. Brit.). On the highest parts of Snowdon (Banks, 

 1773, in Herb. Brit.). 



Syn. C. latifolium (non L.) Smith, " Fl. Britannica," 501 

 (1800), Hartman, " Skand. Fl." ed. n, 239 (1879); C. tomentosum 

 (non L.) Hudson, " Fl. Anglica," 176 (1762); C. arcticum, Lange,. 

 in "Fl. Danica," t. 2963 (1880); C. alpinum, var. arcticum, auctt. 

 recent. 



J. M. Norman, in " Vidensk. Selsk. Forhandl. Christiania," 1893 

 ("Fl. Arctic. Norveg." p. 16), considers this plant to be a hybrid. 

 Certainly its characters are not very distinctive. 



93. Cerastium trigytiui,V\\\. (1789). -- First found on Ben 

 Nevis by James Dickson in 1792 ("Trans. Linn. Soc." ii. 290 

 [i793])- Upon mountains to the north of Invercauld (J. F. Mackay 

 ex Smith, " Engl. Flora," ii. 305). Specimens in herb. Sowerby, 

 used for the figure of Stellaria cerastioides in " English Botany," t. 

 911 (Aug. 1801), labelled in J. F. Mackay's handwriting, "On Ben 

 Nevis, 1 7 94," that is, two years after its first discovery by Dickson. 

 Ascends to 1153 m. on the Grampians of Inverness-shire (Watson, 

 "Cyb. Brit. Comp." 124). Ascends to 1220 m. on the Grampians 

 of Aberdeenshire (Dickie, 29). 



Var. nivale, Williams. Ben Nevis (?). To this probably belongs 

 an example in Herb. Brit, labelled by G. Don, "On Ben Nevis 

 by the side of rivulets : this is a rare plant." It differs from the type 

 chiefly in the leaves being pilescent instead of glabrous. Also on 

 Braeriach, on the western side, in Glen Ennich (G. C. Druce in 

 "Journ. Bot." 1889, 203). 



Syn. C. nivale, G. Don, ex Nyman, "Consp. fl. Eur." no; 

 Groves in Bab. "Man." ed. 9, 67. 



94. Stellaria uliginosa Murr. (1770). Ascends to 1000 m. in 

 wet places on Glas Thulachan (F. B. White), and to 1005 m. on the 

 Grampians of Inverness-shire (Watson, in Herb. Kew.). Descends 

 to sea-level in Cork. 



