Evans: NOTES ON GENUS HERBERTA 207 
material, the statement is supported by Scottish specimens in the 
Taylor herbarium, received from Hooker, and by the fact that 
Dickson's plant was collected ‘‘in alpibus Scoticis.” The type of 
Dumortier’s Schisma stramineum was likewise collected ‘in 
alpibus Scotiae’’ and, in the complete absence of all of Dumortier’s 
types, his species may be regarded as a simple synonym of H. 
adunca. ‘The second form, 8 Hutchinsiae, is described below as a 
new species under the name H. Hutchinsiae (Gottsche). In cer- 
tain respects the true H. adunca, as thus restricted, resembles 
H. Sendinerit more strongly than it does H. Hutchinsiae. This 
would account for the fact that Dumortier failed to distinguish 
between his Schisma stramineum and H. Sendtneri. The latter 
species, however, is clearly distinct, and there is no evidence that 
its range extends beyond the mountains of Austria and Germany. 
With regard to the North American specimens which have been 
referred to H. adunca, there has likewise been confusion. There 
are apparently two species represented, but neither agrees with 
typical H. adunca. The plant from the eastern United States 
seems to be new and is described below under the name H. tenuis; 
the plant from the Pacific Coast, on the contrary, seems to be 
referable to H. Hutchinsiae. The Alaskan material of this species 
is unusually satisfactory because it shows androecia, perianths, 
and sporophytes, all of which are exceedingly rare in European 
material. The four species considered in the present paper may 
be distinguished as follows, only vegetative characters being used: 
Leaves mostly 1.2-2 mm. long and 0.45—-0 de 
Leaves ges about one ha!f; divisions héoad: slightly or not at 
curved, acute to acuminate; vitta not distinct, the 
cells in the divisions mostly aie meek 
Basal portion of leaves’ normally en 
ee Loa icc od iy ates erin aid ‘coarsely toothed. 
strongly 
1. H. adunca. 
2. H. Sendtneri. 
curved, long-acuminate; vitta Gistirict, the cells in the 
divisions often 50-70 » long; basal portion of leaves entire or 
nearly 3. H. Hutchinsiae. 
Leaves uae 0.9-1 mm. long and 0.3-0.35 mm. wide, bifid two 
thirds to three fourths; divisions narrow, slightly or ‘not at all 
curved, ei tinabgaea YES vies a the cat in cai eo 
often 50-70, 23 Pp P gly a : 
aoahad 4. H. tenuis. 
