62 TKANSACTIONS AND PKOCEEDINGS OF THE 



completely pinnate leaves, the upper leaves, however, a little 

 decurrent on the mid-rib of the compound leaf, or are 

 slightly fused together. " 



To some extent this has been realised, but the belief of 

 the writer is that no more careful search in the formerly 

 known habitats would have so resulted. It is entirely 

 owing to the discovery of the new habitat in slate rock, 

 iind near the sea, in the Uisge Solus, at the mouth of Glen 

 Oatacol. 



I send leaves of (1st) the iKO'ivw-leavcd varidij, gathered 

 from a tree on tlie west tributary at the head of Easan 

 Biorach (Lochranza Stream) ; (2ud) the intermediate variety, 

 from the tributary stream to the eastern head-water of the 

 Catacol; (ord) the Pinnate variety, from the Uisge Solus, 



I forward, also, the Ordnance Survey map of the north of 

 ^\.rran, on which I have encircled in red the area in which 

 the Piare I'vrus has been found. 



Notes ox Gleicuenias. By PEitcivAL C. Waite. 



(Kead 12th April 18'.)4.) 



The following is an abstract of the chief characteristics 

 which I have observed : — 



1. In the Merfensias the bundle of the petiole, as seen 

 in T.S., is curved into a O shape; in the Ungleiclienias 

 the arms of the bundle unite, so that the cortex embraced 

 by them, together with the portion of bundle-sheath which 

 separates the cortex from the bundle, is nipped off. "We 

 have thus an annular bundle surrounded by its bundle- 

 sheath, and containing within it a portion of the outer 

 cortex with a few cells of the bundle-sheath surrounding 

 it. This is the case in the young jfotiolc; ; later on this 

 inner patch of cortex disappears. 



That tins peculiar arrangement of the bundle is 

 developed in the way above described may be proved by 

 examirn'ng the petiole of the EitgUichenias, at different 

 levels, as it emerges from the rhizome, where transition 

 stages may be oljserved. There is first a stage resembling 

 the arrangement in the j\rer tendon;, tlien a little higlier up 



