CATALOGUE. 
285 
very irregular and but 1-2-winged or wingless ; seed Ih" long. — Distinguished 
especially by its broad scarious involucre and its not indurated nor crested 
frtdt; varying considerably in pubescence, tlic present specimens having 
rather more than usual. From Northern Arizona and New Mexico to Salt 
Lake Valley, the Platte, and Council Bluffs, Iowa. Foot-hills near Salt Lake 
City and sandy shore of Stansbury Island; 4-5,000 feet altitude; May, 
June. (965.) 
Abkonia TUKBINATA, Torr., in Herb. Annual, viscid-pubescent; stems 
^-1° long, prostrate or subascending ; leaves i-l^' long, broadly ovate or ob- 
long, glabrous or slightly pubescent on the margin, conhile, Iriincate, or some- 
times cuneate at base, obtuse or rarely acute, sometimes sparingly sinuate- 
dentate, usually exceeding or about equaling the petioles; iK'dimelcs usually 
elongated and exceeding the leaves ; involucral bracts 2-6" long, mostly 
linear-lanceolate, acuminate ; flowers numerous, 6-8" long, pinkish ; lind) 
5-parted, 4" broad ; stamens unequal ; fruit 3-4" long, thin-coriaceous, the 
narrow hollow wings crested above in the perfect fruit with transverse disks; 
seed 1" long. — Body of the fruit not at all thickened and figid, as in ^. um- 
bellata and A. meUifera, the wings frequently more or less aborted, l)ut in the 
normal form straight and equal, each terminated by a circular disk. From 
New Mexico and Arizona to Southern California (!) and Nevada. It is 1710 
and 601 Wright, and 93 Wislizenus, from New Mexico ; was colh.'cted by 
Emory and Dr. Palmer in Arizona, and by Stretch and Dr. Torrey (455) in 
. Western Nevada. Fremont's specimens from the Mohave River are probably 
the same. It may be the A. speciosa of Buckley, from Fort Belkna]), New 
Mexico, but the description is too meager for the identification of the s})ecies. 
Carson and Humboldt Valleys, Nevada; May-August. Plate XXX f. I^g. 
1. A flowering stem; natural size. Fig. 2. Flower, laid open. 3. 
Fruit, divided longitudinally and showing the seed. Fig. 4. Traiisv(M-s(3 sec- 
tion of the wings. Fig. 5. Terminal disks; all cnhiri^^cd two dinmcicrs. 
Fig. 8. Transverse section of seed. Fig. 9. Embryo ; both enlarged eight 
diameters. Figs. 6, 7. Fruit of A. umhellata; enlarged iuo diainctf-rs. (966.) 
Abronia cycloptera. Gray. Sill. Jour., n. s., 15.319. {A. micranthn, 
Torr. Fran. Rep. 96.) Annual, more or less glandular-pubescent, scarcely 
at all viscid; stems 2'-2° long, ascending; leaves oblong, ovate, or ovate- 
lanceolate, usually more or less cuneate at Ijase, obtuse, the blade 1-2' long, 
coarse-pubescent at least upon the margins and veins beneath; peduncles 
