10 THE JOURNAL OF BOTANY 



beneath, sharply serrate, with compound teeth towards the point] ter- 

 minal narrowly obovate with fairly long cuspidate-acuminate point, 

 narrow subcuneate emarginate base, and strongly armed petiolule 

 nearly or quite half its length ; the short hooked pricklets of all 

 the petiolules extending far up the midribs. Panicle long, rather 

 broadly cylindrical, lax, racemose above, with patent or subpatent 

 2-4- flowered branches in the middle, and two or more ascending 

 racemose branches below ; with many strong, declining and falcate 

 prickles and pricklets on the greenish hairy rachis and pedicels; 

 rachis rather wavy ; leaves 3-nate below, with several narrow 

 lanceolate-acuminate ones above (in well-developed panicles) and 



some deeply cleft bracts. Flowers many, very handsome and starlike 



in sunshine. Sepals externally greener than in most Bhamni- 

 folians, but densely hairy; with short stout acicles, and narrow 

 white margin ; strongly reflexed on fall of petals. Petals large, 

 white, broadly obovate but not contiguous. Stamens many, con- 

 spicuously long, white, far exceeding greenish styles. Frequent and 

 constant by the lakes and streams, and in hedges, W. Langdale 

 Head to Grasmere. About Patterdale and the south end of Ulls- 

 water (immature, but apparently identical). South Lancashire. 

 Between Coniston and Ambleside, M. A. R. ! C. Watermillock. 

 By Thirlmere and Derwentwater. Threlkeld. While strongly 

 recalling R. Lindeberyii in such conspicuous characters as the 

 strongly armed and somewhat wavy panicle-rachis (with a tendency 

 to fasciculation in the upper branches), the obovate outline of the 

 leaflets and the handsome white flowers, R. lacustris differs from 

 that species constantly in it3 weak subsulcate stem, narrow thin 

 green leaflets with sharp compound teeth in the upper half, and 

 (most markedly) by its many broad compound panicles, which, in 

 spite of the comparative smallness of the bush, make this one of 

 the most conspicuous brambles at the Lakes, where alone I have 

 seen it. From R. puloherrimus Neum. and R. Maassii Focke, which 

 seem to be its other nearest allies, its subsulcate stem, narrow 

 leaflets and broad large-flowered and strongly armed panicle sepa- 

 rate it readily. R. Maassii further differs from it by its u quite 

 glabrous' * stem. 



R. mercicus Bagnall var. bracteatus Bagnall. W. Easedale, 

 M. A. RA Grasmere, abundant. Near Casterton. C. By Der- 

 wentwater. Very handsome and luxuriant in both counties.—^ 

 Selmeri Lindeb. Frequent. W. Patterdale. Langdale. Bydal 

 to Grasmere. Kirkby Lonsdale neighbourhood. S. Lanes. Near 

 Coniston, XL A. R. ! C. By Thirlmere and Derwentwater. Threl- 

 keld. — R. pyramidalis Kalt. 0, Threlkeld (a weak form). Seen 

 nowhere else. — -'R. leucanthemus P. J. Muell. ? W. Grasmere ; 

 luxuriant and in good quantity. — R. leucostachys Sm. S. Lanes. 

 Coniston, M. A. R. I C. Near Aira Force. Not seen elsewhere. 

 R. infestus Weihe. W. Langdale, in two or three places. — - H. 

 Drejeri G. Jensen. W. By stream in valley below Dungeon Ghyll. 

 Strong, with white petals. — R. radula Weihe, *subsp. echinatoidn 

 Rogers. W. Bed Bank Wood, Grasmere.— #. fuscus Wh. & N. 

 W. Rydal, in some quantity.— Ft hystrix Wh. & N. W. Bydal, 



