Evans: NOTES ON GENUS HERBERTA 217 
however, was based on specimens in the United States National 
Herbarium, which, in the writer’s opinion, represent a slender 
form of Anthelia julacea (L.) Dumort. This species is now known 
from several localities in Alaska, and additional specimens, essen- 
tially like those of Merriam, were collected on St. Paul Island, in 
1897, by T. C. Kincaid (49). 
The narrower and more deeply divided leaves of H. Hutchin- 
Siae, with their more slender and strongly curved divisions will 
usually distinguish the species from H. adunca at a glance. In 
doubtful cases the distinct vitta extending far out into-the divisions 
will decide the determination. The more gradual tapering of the 
divisions is clearly brought out by counting their width in cells. 
In H. Hutchinsiae, if the counts are made at a distance of 0.2 mm. 
from the apices, the divisions are found to have a width of from 
two to four cells; in H. adunca the corresponding counts will 
usually give from five to eight cells. Counts at the bases of the 
divisions are much less conclusive, on account of the fact that the 
divisions in H. Hutchinsiae are relatively longer, the bases there- 
by being often as wide as in H. adunca. 
Among the specimens listed above, those from Norway are 
somewhat aberrant. Although some of the shoots conform closely 
to the type, others bear leaves which are considerably larger. 
One of the largest leaves measured had a length of 2.4 mm. and a 
width of 0.95 mm.; another, a length of 2 mm. and a width of 1 mm. 
The dorsal divisions of these measured, respectively, 1.2 X 0.45 
mm.and1.05 X 0.4mm. _ Since these leaves are relatively broader 
than is usual, it might appear at first sight as if the large-leaved 
shoots approached H. adunca, but the distinct vittae present would 
seem to preclude this idea. In all probability they represent 
shoots developed under unusual conditions, perhaps exceptionally 
favorable from a nutritive standpoint; the large leaves might then 
be regarded as abnormal. 
The androecia in H. Hutchinsiae are not absolutely constant in 
position. In normal cases they are borne on the secondary stems 
just as in H. adunca. Under these circumstances an androecium 
usually proliferates at the apex and then produces a new androe- 
cium after a short series of vegetative leaves. In several instances, 
however, androecia on ventral or lateral branches have been 
