234 PITTONIA. 
outline, scarcely compressed, very saliently 8 to 10-ribbed 
and deeply channeled between the ribs, the persistent style 
and stigma little curved, rather short, barely (or scarcely) 
one-third the length of the achene. 
Type from Stein’s Mountain, Oregon, at the head of Wild 
Horse Creek, by W. C. Cusick, 14 July, 1898; but a sheet 
of specimens from near Colby, Butte Co., California, by 
Mrs. Austin, 1896, appears to be the same. Species with 
peculiarly and beautifully cut foliage; an ally of T. Fendleri, 
though with very different achenes. 
¥Rumex ELLIPTICUS. Allied to R. altissimus, not as tall, 
the elliptic foliage more elongated, the panicle more ample, 
all the verticils crowded; pedicels jointed at the very base: 
valves of the fruiting calyx larger, of more rounded outline 
(from round-ovate to round-deltoid) and obtuse, none grain- 
bearing, all reticulate-venulose, the veins becoming obsolete 
toward the thin margin. 
In fields and along river banks at Roswell, New Mexico, 
5 August, 1900, F. S. Earle. The real R. altissimus has 
always one valve with a large full grain, one with a rudi- 
mentary grain, and the third with no trace of a grain. 
^RuwEx HEsPERIUS. Allied to R. altissimus, but low and 
slender, very leafy, the panicle small, small-fruited: leaves 
elliptie-lanceolate, very acuteoracuminate, wavy-margined or 
even almost crisped: pedicels jointed at the very base: valves 
of the fruiting calyx from quite exactly and sharply deltoid 
to subreniform-deltoid, as broad at base as long, none grain- 
bearing, all distinctly though not strongly venulose, seldom 
obviously reticulate. 
Bottom lands near Bingen, Washington, 31 Oct., 1893, W. 
N. Suksdorf; the specimens distributed for R. altissimus, but 
the species very distinct. 
