TRIT1CUM PEREGR1NUM, IIACKEL 103 



nervis aculeolato - scaberrimis. Glumae fertiles oblongae, 

 retusre, bidentatae, dente altero nervum medium excipiente 

 plerumque in mucronulum crassum obtusiusculum producto, 

 altero depresso-triangulari, interclum tertio rotundato aucto, 

 ceterum muticae, 5 -nerves, tota superficie minute scabro- 

 punctatae. Palea glumam fertilem aequans, oblonga, obtuse 

 bidentata, carinis setuloso - ciliolata. Lodiculaa ciliatse. 

 Ovarium apice hispidulum. Spica cum omnibus spiculis 

 fertilibus demum caduca, spiculis sterilibus in culmo 

 manentibus. 



Patria ignota, introductam in Scotia prope Edinburgh 

 (Slateford et Leith Docks), invenit J. Eraser. 



Affinis Tritico mutico (/Egilopi vinticce, Boiss.) quod 

 differt a nostro spica elongata gracili multispiculata, inter- 

 nodiis spicula adjacente longioribus, spiculis minoribus angusti- 

 oribus, oblongis, glumis sterilibus vix dimidiam spiculam 

 asquantibus apice dilatatis obscure sinuato - clenticulatis, 

 glumis fertilibus obtusissimis subintegris." 



LEITH, March 1907. 



BUTOMUS UMBELLATUS, L., IN CAITHNESS. 

 By ARTHUR BENNETT. 



MR. R. BAIN of Wick, in a letter recently sent me, tells me 

 he has seen three specimens of Butomus on the north side 

 of the Wick river, and a botanical friend informs him that 

 he has " seen it in the same place a good many years ago." 

 Mr. Bain adds, " I am a good deal surprised that your friend 

 Mr. Grant has not reported it." I am not, because it may 

 be it flowered only occasionally. It is one of those semi- 

 aquatic species that are very uncertain in flowering. 



Of course, with such a paucity of specimens we cannot 

 say much ; but there is no reason why the species should 

 not be a native of Scotland. The late Dr. B. White in his 

 Flora of Perth considered it a native, and also in letters to 

 myself when discussing the grade of various species. 



In Sweden it is general in the provinces of Skane, 

 Halland, Sodermarland, Upland, and Nerike, and occurs 

 in twelve other provinces north to Jemtland about 64" N. 



