SOME NORTH-EAST IRELAND RUBI 383 



marked than in Idbemicm, but is still very unlike the shallow 

 serration in Drejeri and the very even simple teeth in Leyanus. ^ In 

 B. Drfjeri alone are the leaves chiefly 3-4-nate, and the terminal 

 leaflet roundish, with short point. 



I am convinced now that the right place for H. dnnensis is not 

 (as I for a time supposed) among the Koehleriani near B. cognatus, 

 but among the E(jn'(jii, after aggregate B. Drejeri. The four forms 

 may be thus contrasted : — 



I. Stem considerably hairy. 



(1) Leaves chiefly 3-4-nate. Leaflets roundish, with rather 

 short cuspidate point, and shallow irregular teeth. Panicle narrow 

 cylindrical. 



B. Drejeri. Stem fuscous, dull. Leaves flat, green. Prickles 

 often falcate, especially on panicle. 



(2) Leaves usually conspicuously 5-nate. Leaflets with long 

 acuminate point and compound sinuate toothing. Panicle pyramidal. 



B. dnnensis. Stem and leaves yellowish. Stem very prickly 

 and aciculate. Leaves concave, thick, soft beneath, very broad, 

 the long intermediate leaflets overlapping the basal. Panicle close 

 above, with distant lower branches. Flowers early. 



B. hibernicus. Stem and leaves green. Stem with thinly scat- 

 tered prickles and acicles. Leaves soon quite flat, thin, comparatively 

 narrow, rarely imbricate. Panicle long, lax throughout, with rigid 

 upper branches. Flowers late. 



II. Stem siibglabrons and shining. 



B. Leyanus. Stem yellowish -brown, with very variable armature. 

 Leaves mostly 5-nate, green above, often grey-felted beneath, sharply 

 evenly toothed. Panicle rather lax, much narrowed above, but with 

 less formal outline than in B. hibernicus. 



The existence of B. Leyanus in North-east Ireland now needs 

 confirmation ; but I am still disposed to refer to it Mr. Marshall's 

 plants from AVexford and Mayo (see Irish Top. Bot. p. 105). Mr. 

 Druce's records for 39 and 40 may also be right (as I thought at 

 the time) ; but I no longer have his specimens to refer to. 



RaDUL;E. 



B. radida^QihQ. Typical, or nearly so. 38. Newcastle, 7)7-Hr^! 

 Lisnagade, Aghaderg, iMt ! 39. Near Giant's Causeway, Bailey ! 

 Cave Hill, Druce ! 



Subsp. echinatoides^ogQYs. 37. Tanderagee ; Ballymore, Lett\ 

 Scarva, abundant; near Newry. 38. Aghaderg, in several places, 

 but rather local. I am satisfied now that it was an exceptionally 

 slender form of this subspecies that I named B. rudis Weihe for 

 Canon Lett a few years ago (see Irish Top. Bot. p. 106). 39. Glen- 

 arm, Lett\ & Drucel Cave Hill, Druce ! & Waddell ! Less glandular 

 than usual. 



B. echinatus Lindl. 37. Market Hill, Druce ! 



B. oigocladus Muell. & Lefv. var. Xewbo2ddiiBQh. "^'Ql. Scarva, 

 in great quantity ; near Newry. 38. Aghaderg ; Anacloan ; Ban- 



