CATALOGUE. - Bei 
ZyGapENus GLaucus, Nutt—Colorado (950). Also from the Mogollon 
Mesa of Arizona a form corresponding well with the description and with 
other specimens, save in the shape of the gland, which extends across the 
lobes of the perianth, but has sometimes no upward heart-shaped divisions 
whatever (103), Loew. The shape of the gland, I am convinced, is quite 
too inconstant to serve as a specific test. A specimen from Anticosti Island 
has exactly the gland of Z. Fremontii, Torr., and yet is in all other respects 
a good Z. glaucus. 
ZYGADENUS ELEGANS, Pursh (Fl. N. Am. vol. 1, p. 241).—1-2° high, 
slender, upper leaves few, one or two somewhat elongated but not exceed- 
ing the stem; lower leaves narrow (4-6” wide), equal to or exceeding the 
stem; pedicels in the developed flower 8-12” long, slender, exceeding the 
narrowly lanceolate, thin, veined bracts; flowers ‘‘white” or yellowish- 
white, 8-10” in diameter ; divisions of perianth oblong, obtuse, longer than 
the stamens; racemes often paniculate at base; oblong ovules in two rows, 
20-25 in each cell. In my specimens of this species, the glands are usually 
deeply and obtusely two-lobed, with the lobes entire and the veins indis- 
tinctly seen. In a specimen of Z. chloranthus, Rich. (for which species I at 
first took this), from Fort Yukon, Alaska, the glands are less deeply lobed, 
with the lobes truncate and distinctly toothed, and the veins quite plainly 
seen. Not only do these shapes and divisions differ in the same species, 
but often markedly in the same flower. 
By Pursh, the flower is said to be white, the petals acute, and the 
gland cinnabar-colored, in which points my specimens certainly do not agree 
with the description. Mr. Watson, on comparing this with the plants in the 
Cambridge herbarium, names it as above; and I do not hesitate to accept 
his determination —Mogollon Mesa, Arizona, Loew (103) ; Willow Spring, 
Arizona, at 7,195 feet elevation (243). 
Zyoapenus Nutrauiu, Gray.—Apex, Colorado (944). 
ers our eastern J. viride, Ait., as differing from V. album, L., “ only in the green herbaceous perianth, . 
the segments perhaps rather less attenuate at base, the panicle more open and with longer branches.” 
The Oregon form (probably the same with which Durand contrasted his V. Californicum in Plant. Prot- 
ten. Calif. p. 103) Mr. Watson decides to be V. Eschscholtzii, Gray. 
Comparing the specimen (395) from Mount Graham with an eastern J. viride, Ait., I find the lat- 
ter to have much longer (relatively) and more delicate filaments, and the unopened anthers to bo just 
a little retuse at the apex, giving them, when fully opened, the appearance of a slightly four-lobed disk. 
