2 35 



BULBIFEROUS FORMS OF WEBER A 

 ANNOTINA. 



T. BARKER, 



TVhaley Bridge. 



Prof. Correns (Untersuchungen uber die Yermehrung der 

 Laubmoose etc.), after studying- these forms and the develop- 

 ment of the bulbils, has established out of them four species, 

 viz. : — 



(1) Webera erecta (Roth) Correns. 



(2) Webera proligera Lindb. 



(3) Webera amwtina Hedw. Emend. 



(4) Webera bulbifera (Warnst.) Correns. 



The variety of form of the bulbils is noticed, so far as I have 

 observed, in the ' Student's Handbook ' only — ' in the axils of 

 the leaves, small reddish, leafy bulbils, or crowded green foli- 

 aceous, 2-3 pointed gemmae.' The descriptions elsewhere appear 

 to refer to (1) only. 



These forms all occur in this part of Derbyshire (near 

 Whaley Bridge), and except perhaps (4) are fairly common, 

 indeed (2) is abundant ; I cannot, however, find any information 

 as to their occurrence and distribution in this country ; and the 

 object of this brief note will have been attained if it serves to 

 direct the attention of bryologists to these forms, and to the 

 very interesting - work of Prof. Correns. 



A few short notes ma}* facilitate the recognition of these 

 forms, and may serve as a ' key ' to them, but for full details the 

 work just referred to must be consulted. 



(1) . Webera erecta. Bulbils roundish ovate with slightly 

 tapering ends, green when young, brown when ripe, occurring 

 singly in a few leaf axils about the middle of the stem, the 

 foliaceous points being rather widely triangular. The containing 

 leaves diverge more widely than the others which are erect. 

 The plant occurs in rather compact yellowish green, somewhat 

 glossy, little patches, in gritty rainwater channels on old roads. 



(2) . Webera proligera. Bulbils long, narrow, slightly 

 widening from base to apex, green, with longer, narrower foli- 

 aceous points, very numerous along the upper half 'of the stem up 

 to the apex, giving to the stem a sort of bottle-brush appearance 

 under the lens. Plant in habit and leaf similar to (1) ; in similar 



1902 July 1. 



