28 PITTONIA. 
tapering to a triangular, entire and very sharp acumination: 
sepals triangular-lanceolate, obscurely auricled: corolla muchas 
in V. Canadensis, but smaller. 
My first and early-flowering specimens of this were obtained 
from the shelves and crevices of a precipice in Clear Creek — 
Cafion five miles above Golden, in May, 1870. Again in 1872, 
June 10, I collected older specimens showing the later develop- 
ment of the foliage, and young fruit, as well as later flowers, 
these all petaliferous. These later specimens are 8 or 10 inches 
high. The species flowers from nearly all the axils, and is 
therefore much more copiously floriferous than any other of the 
V. Canadensis group. 
V. Neo-Mexicana. With the rootstock and the habit of 
V. Canadensis, the stems quite as stout, nearly as tall, rather 
more sparsely leafy, the leaves smaller, none broader than long, 
the lowest round cordate and cuspidately acutes, the upper from 
cordate to ovate, acuminate, mostly glabrous beneath, above 
scaberulous not only along the veins, but over the whole surface: 
peduncles short, never equalling the leaves; sepals lanceolate, 
broader than in V. Canadensis and with a not indistinct short 
rounded auricle; petals as in V. Canadensis but firmer, appar- 
ently altogether dull-white without change in age or in drying. 
Near Santa Fe, New Mexico, A. A. Heller, n. 3645; but also, 
in smaller form in the Mogollon Mountains, by myself, 20 April, 
1880. 
V. MURICULATA. Size of the last but more slender, the leaves 
much thinner, the lowest on elongated slender petioles, more 
subreniform cordate, delicately and closely puncticulate on both 
faces, but the dots on the upper faces, especially of the canline 
and uppermost leaves, developing each a short stiff hair, thus 
rendering the surface muriculately seaberulous: peduncles few 
and near the summit only, very short: sepals lanceolate, show- 
ing very distinct and invariably 2-lobed anricles, the lobes 
rounded, entire: corolla smaller than in V, Canadensis, not 
