66 DR. S. O. LINDBERG'S BRYOLOGICAL NOTES. 
Bryological Notes. By S. O. Lriwpnzne, M.D. 
[Read Feb. 16, 1871.] 
Mn. Dickson, in his * Pl. crypt. Brit.’ fasc. 4, p. 16, t. 11. f. 13 
(1801), has described, under the name of Hypnum Teesdalei, a 
moss which he considered to be new ; but Smith, in his * Fl. Brit.’ 
vol. ii. p. 1306. no. 39 (1804), proved that this species was 
nothing else than H. velutinum, L., var. B. intricatum (Schreb.), 
and that the moss called H. intricatum by Dickson in his work 
quoted, fase. 2, p. 10 (1790), must be a new one, to which Dr. 
Smith gave the name H. Teesdalei. It was described the same 
year by Mr. Turner in his‘ Muse. Hibern. Spic.’ p. 150. no. 16, 
the species and name having since been generally accepted. 
The moss in question remained for a long time imperfectly 
understood, even by British authors, e. g. Hooker and Taylor, till 
Mr. Wilson, in his * Bryol. Brit.', drew up the characters as they 
are found in nature, although we cannot accept all his synonyms, 
nor the figures given on plate 55. With regard to the delinea- 
tion of the nerve, it is to be remarked that it is not continuous or 
subexcurrent, but ends just below the somewhat obtuse apex, as it 
is properly described by Wilson; and as to the synonyms, Wilson 
only followed the authors of the * Bryologia Europsa, who had 
under Rhynchostegium Teesdalei, confounded two very distinct 
species of Hypnum, as I will now prove. 
Of the two thus confounded in * Bryol. Eur. one, the true H. 
Teesdalei, Sm., is there mentioned only among the synonyms; but 
the other, described and figured as Rhyn. Teesdalei, is a very dit 
ferent species, described by Bridel in his ‘Sp. Muse.’ ii. p. 11! 
(1812) as H. curvisetum, n. sp., à moss which has since received 
many different names, as the synonyms given below will show. 
To draw up a full history of this species would be tedious, and it 
may perhaps be sufficient if I give an accurate description of 
both. 
H. Teesdalei, Sm., is a Eurhynchium, intermediate between H. 
pallidir ostre, Brid. (H. pumilum, Wils., is the same, according t? 
original specimens of both), and H. filifor me, Lam. (H. Lamar ckii, 
DeC. 1805, or H. velutinoides, Bruch, 1848), with the nerve con 
structed nearly as in the leaf of H. crassinerve, Tayl.; the other, 
H. curvisetum, Brid., is a Rhynchostegium, allied to H. serrula- 
tum, Hedw., var. y. RAD Lindb. ( H. confertum, Dicks.), and 
