168 
ever in this paper I refer to “the lakes,” the Lakes of the Clouds 
are intended), occurs af. pallidifiora, collected by Mrs. Cusack, 
with the flowers smaller, white tinged with blue, pods five, and 
larger leaves. In cultivation, a somewhat similiar variety has 
been produced, for Vilmorin’s catalogue for 1889, p.114, enumer- 
ates a form, “‘a fleur blanche.” It is noticeable that blue flow- 
ers most often vary to white.* Near the Micawber Mine there 
occurs a second variety of A. cwrulea, which I will call f. glan- 
adulosa.t It has six pods, and the peduncles and pods are pubes- 
cent and viscid-glandular. One head was found with as many 
as seven pods, but six is the usual number. The remaining 
Ranunculacee occur near the Micawber mine; Act@a spicata 
var. arguta, with red berries; and Delphinium occidentale, which 
has also a f. subroseum, with the sepals dull bluish-pink, and the 
plant not so tall. 
BERBERIDACE. Serberis repens, in the Micawber Mine 
Gulch, is the only representative of the order. 
CRUCIFER&. Cardamine cordifolia, near the Micawber and in 
Swift Creek Gulch, and Erysimum asperum, in the Micawber Mine 
Gulch, are conspicuous. £. asperum presents two forms: of which 
f. alpestre, growing at about 10,000 feet, has the flowers becom- 
ing deep orange-brown.|| At timber line I found the other form 
—only 61 millimeters high, although the flowers are yellow and 
of the usual size. Near the Micawber Mine there occurs a puz- 
aling Sisymbrium, which I wiil provisionally call S. canescens var. 
alpestre. It is tall, glabrous, stem with a white ‘ bloom ;’’: pods 
ascending, mostly longer than pedicels. £. asperum f. alpestre 
* T have found this so in my experience, and Mr. F. W. Anderson, who is a 
close observer, writes me, (December 4th, 1889), as follows: ‘‘ Yes, undoubtedly 
blue flowers more often vary to white than do those of any other color. Examples, 
various common Astragali, Lupins, Delphiniums : Gentians, like the yellows, are 
more apt to vary to green or greenish.” 
+ There is already a species 4. g/andulosa, in Siberia, but this need not mets’ 
with the use of that name for our present form. 
}{D. scopulorum, which occurs abundantly at a lower altitude, I did not observe 
varying in this manner. 5 
| This variation occurs as the effect of altitude : lower down, the flowers of this 
species are yellow. A more extreme form, which I have not seen, has ‘the flowers 
purple; Miss A. Eastwood found it in the Uncompaghre Caiion. Thus we arrive 
at the normal colors of some other Cruciferae. 
