222 Evans: NOTES ON GENUS HERBERTA 
to produce them more frequently than the side-leaves. The teeth 
are of fair size, often involving several cells, and may be rounded or 
sharp. In the latter case they are especially conspicuous (TEXT 
FIG. 24). It has already been noted that teeth form an important 
feature of the leaves in H. Sendineri, whereas in H. adunca and 
H. Hutchinsiae the margin is normally entire. H. tenuis occupies 
an intermediate position in this respect, the teeth being less 
frequent than in H. Sendtneri but more frequent than in either of 
the other species. 
The present paper is based largely on material in the herbarium 
of Yale University. This has been supplemented by specimens 
from the Taylor herbarium at Harvard University and from the 
herbarium of the New York Botanical Garden. Additional 
specimens have been received from Professsr A. LeRoy Andrews 
of Cornell University, from Mr. S..M. Macvicar of Invermoidart, 
Scotland, and from Mr. C. Jensen of Hvalsé, Denmark. The 
writer would express his sincere thanks to all who have aided him 
in his work. 3 
SHEFFIELD SCIENTIFIC SCHOOL, 
YALE UNIVERSITY. 
Explanation of plate 8 
HERBERTA HUTCHINSIAE (Gottsche) Evans 
Fics. 1-3. Leaves, x 4 
Fic. 4. Cells from the lower sack of a leaf, showing the basal vitta, X 225. 
Fic. 5. Cells from the dorsal base of a leaf, showing two rudimentary teeth, 
as. 
Fic. 6. Cells from the upper part of a dorsal leaf-division, X 225. 
Fic. 7. Cells from the apex of the same division, X 225. 
FIG. ro. sie ga es bans — to the last pair, X 27. 
FIG. 11. erichaetial ir of the same involucre, X 27: 
FIG. 12. pears from the same involucre, X 27. 
Fic. 14. Transverse section of perianth, x 40. é 
Fic. 1 was drawn from Irish — collected by B. Carrington and distri- 
aang in Rabenhorst’s Hep. Europ. 210; Fic. 2, from Scottish specimens collected 
iar or and Series # in Sch ner’s Hep. Europ. Exsic. 467; the re- 
g Pp y T. C. Frye at Port Antonio, Alaska, 649. 
