CATALOGUE. 20 
ArripLex* patuta, L., var. Hastata, Gray, Colorado (262, and 259 
in part); var. LITTORALIS, Gray, Colorado (259 in part). 
ATRIPLEX EXPANSA, Watson (Proc. Amer. Acad. ix, p. 116)—Annual, 
erect, much branched; leaves almost sessile, thin, ovate-triangular, or sub- 
hastate at base, lower ones opposite; fruiting bracts nearly sessile, broadly 
cuneate or roundish, distinctly reticulate or muriculate and pale below, 
herbaceous and irregularly toothed along the free, herbaceous margins, 
united to above the middle; the interrupted staminate spikes slender and 
naked above-——A common straggling species growing abundantly on the 
alkaline flats of the San Luis Valley, Colorado (278). 
ArripLex Wo.rn, Watson, /. ¢. p. 112.—Annual, low, scurfy-pubes- 
cent, branching, reddish; leaves linear, entire, thickish, margins slightly 
revolute ; ‘androgynous axillary clusters of flowers very small”; fruiting 
bracts #’’ long and as broad, united to the top; upper lateral teeth thick, 
slightly truncate, middle one smaller and somewhat acute; styles short.—San 
Luis Valley, Colorado (277).—Puiate XXIV. Natural size. Fig. 1. Stami- 
nate flower, about 12-15 diameters. 2. Pistillate flower, about 10 diameters. 
3. Pistil, about 10 diameters. 4. Section through figure 2. Figs. 5, mature 
fruit; 6, vertical section of same; 7, annular embryo; all enlarged about 10 
diameters. 
ATRIPLEX CONFERTIFOLIA, Watson (Obione confertifolia, in King’s Re- 
port, v, 289).—Nevada and Utah. 
ATRIPLEX HYMENELYTRA, Watson (Obione hymenelytra, Torr. in King’s 
Report, v, p. 290).—Nevada. 
ATRIPLEX CANESCENS, James (Obione canescens, Moq.).—This is the 
982 in vol. v, King’s Report, p. 289, but not 981 of same place. It differs 
from the latter, which is A. Nuttallii, Watson, in having the indurated, 
fruiting bracts united to the apex, contracted above to a narrow orifice and 
pedicelled, and not muriculate; the fruiting bracts of A. Nuttallii, Watson, 
being united to above the middle, the orifice hardly contracted, and the 
sides usually muriculate-toothed, and fruit mostly sessile. See Watson, 
Revis. Chenopod./. c. p.120.—Colorado (268). Specimens from New Mexico, 
* ATRIPLEX.—“ Bracts compressed, more or less united: testa double ”—Warson, Revision of N. 
Am. Chenopod. J. ¢. 
