69 
received from Beauvois. They were collected in Pennsylvania by 
Muhlenberg, and are identical with the species which we have 
been calling U. Hutchinsie in North America. 
The confusion which has arisen is in consequence of the use of 
the same specific name by Mitten for U. curvifolia (U. Americana, 
Mitt.) 59 years after it had been used by Palisot de Beauvois for U. 
Hutchinsig. WNith singular fatality it has spread into every 
modern text-book, catalogue and magazine which has referred to 
the subject, even to the last report of the American Naturalist of 
the Proceedings of the Madison meeting, where I am made to | 
Say just the opposite of what I did say. Braithwaite in his British 
mosses is the only one who seems to have understood Lindberg 
correctly, and he cites Weissia Americana (Beauv.) Lindb. for 
Ulota Hutchinsie, Smith, and does not refer to Ulota Americana, 
Mitt. 
The unfortunate part of it is that Limpricht in the Laubmoose 
(part 14, page 21, 1890) should have made the mistake of citing 
Mitten’s Ulota Americana in connection with this species, and 
that Venturi in the Revue Bryologique should not have made the 
comparison of the specimens which I sent him with U. curvifolia, 
and not with U. Hutchinsia. 
WEIssIA AMERICANA RUFESCENS Di. var. 
Plants more slender, green or brown not black, stems rufous 
tomentose, leaves less crowded, longer, often 3 cm. narrower, acu- 
minate, upper cells more dense and obscure, lower golden brown, 
rectangular, not linear or sinuous, marginal shorter, not hyaline ; 
Seta 2 mm. long, neck tapering .75 mm. stomata few, small, theca 
Pyriform, 1.5 long by I mm. broad, inflated, narrower at the 
mouth, ridges continuous of 3-6 rows of cells, broadest at the 
mouth, not prominent on mature capsules; peristome double, 
teeth reflexed when dry, white granulose, not trabeculate at apex, 
cilia eight of two rows of cells, fugacious; calyptra with short, 
glossy papillose hairs. 
_ Summit of White Top, on trees in dense woods of Picea Ma- 7 
“lana and rubra, mixed with Dicranum longifolium, Zygodon viri- 
dissimus, W, ulophylla and Frullania Asa-Grayana. Alt. 5,678 ft. oe : 
Differing in habitat and general aspect from the common form ~ 
Which grows on old stone fences, on erratic boulders and stones in ny 
Woods forming black patches with Hedwigia ; from var. ee 
