184 TRANSACTIONS OF THE [Sbss. lxxvii. 



phrodite flowers, a single clump on a dry bank by the side 

 of a field on the north slope of the Braid Hills, v.c. 83. 

 This is the second instance of the occurrence of this plant 

 in Britain, the first being the discovery of a single clump 

 with female flowers near Tantallon Castle, v.c. 82, by Miss 

 Trower in 1910. The casual occurrence of this form in 

 single plants leads to the conclusion that it is merely a 

 glabrous form, a " mutation ' : or " sport," of Lychnis diurna, 

 Sibth. — an opinion strongly held by Professor Domin of 

 Prague and expressed by him in a book on " Evolutionary 

 Theories," published in 1909 at Prague. Writing in 

 January 1913, Professor Domin, reaffirming his opinion, 

 says further : — " Since the (publication of) the above- 

 mentioned book I observed directly the origin of the 

 typical ' Lychnis Preslii ' in our Botanic Gardens, where 

 we are cultivating only the typical hairy form. Among 

 about forty or fifty plants of this form there arose two, 

 perfectly glabrous, smooth and pale green." 



Sekera, who found this plant in great quantity in 

 Bohemia in 1842, at first named it Lychnis diurna, Sibth., 

 var. glaberrima, and only on the advice of friends did he, 

 ten years later, raise it to the rank of a distinct species 

 under the name of Lychnis Preslii. 



A New Lichen. Communicated by James M'Andrew. 



Lecanora Andrewi, B. de Lesdain, n. sp. 



Crusta indistincta, apothecia numerosa, conferta, usque 

 ad 1 mm. lata, disco pallido- vel livido-fusco, piano, margine 

 albido crasso subintegro vel subcrenulato persistente 

 flexuosoque cincto, C + leviter aurantiaco, KC + intense 

 aurantiaco. Epithecium luteolum granulosum, thecium 

 et hypothecium incolorata, paraphyses facile liberae, graciles, 

 simplices, eseptatae, apice vix aut non incrassatae, asci 

 clavati ; sporae 8-nae, hyalinae, simplices, ellipsoideae, 11-13 

 (15) fx long. ; 6 lat. Gelat. hym. I + intense caerulescit. 



Primo intuitu Lecanoram dispersam in memoriam 

 revocat. 



In an old quarry in the field opposite the Braid Hills 

 curling pond, Edinburgh ; coll. James M'Andrew. 



