324 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
I have separated this plant from <4. fragrans because of its less erect habit. 
more glabrous leaves inclined to be semicordate at the base, rather smaller 
flowers, and much smaller and narrower bracts. Some of the plants referred 
here have much narrower bracts than the type, often narrowly lanceolate, 
Type U. S. National Herbarium no. 901296; cotype in the herbarium of the 
Missouri Botanical Garden: collected “on sands” at Estelline, Texas, May 25, 
1904, Reverchon 4282. 
Other specimens examined: 
TEXAS: Mitchell County, 1882, Reverchon 1345: Big Springs, 1908, Tracy 
S078; Wichita County, 1880, /. Ball: istelline, 1908, Reverchon 3686n, 
IHXPLANATION OF PLATE XLI.—Scee under preceding species. 
39, Abronia robusta Standley, sp. nov. PLaTE XLII. 
Perennial; stems erect, GO cm. high or less, very thick and stout, as much as 
15 mm. in diameter, covered with an exceedingly dense short-hirsute pubescence : 
plant very leafy; leaf blades ovate, 4 to 8 em. long, 2 to 5 em. broad, obtuse or 
acute, cordate or trunente or broadly rounded at the base, densely puberulent 
on both surfaces or sometimes almost glabrous above; petioles thick, as long as 
or longer than the lower blades, those of the upper leaves shorter than the 
blades; peduncles § to 11 cm. long, stout, hirsute: bracts 6, puberulent, scarious, 
lanceolate, acuminate, 7 mm. long and 2 or 8 mm. wide: flowers numerous in 
rather dense heads, 2 em. long, their tubes almost glabrous; fruits biturbinate, 
the outer ones of the head strongly so, the inner less markedly so, narrow, 
5 to Timm, Jong and 3 mm. wide, with a stout beak above; the outer fruits 
merely ridged, the inner with narrow, thick wings or ridges, these not more 
than 1 mm. wide, 
Nearest A. fragrans, but more robust, its bracts nurrower, its stem densely 
hirsute. The type material in the herbarium of the Missouri Botanical Garden 
consists of 4 sheets collected on sand hills near Monahans, Ward County, Texas, 
May 10, 1901, by H. Eggert. This is the most densely pubescent Abronia that I 
have seen. 
EXPLANATION OF PLATE XLIL-—Fig. 1, a, plant of Abronia robusta ; b, fruit of same. 
a, Seale 4: b, seale 2. 
40. Abronia fendleri Standley, sp. nov. PLATE XLII. 
Apparently perennial: stems stout, erect, 30 or 40 em. high, densely hirsute 
throughout; leaf blades rather broadly lanceolate, rather obtuse or acute at the 
apex, unequally and rather broadly cuneate at the base or subcordate in young 
Plants, 25 to 50 mm. long and 12 to 20 mm. wide, sparingly puberulent on both 
surfaces, especially on the veins: petioles of the lower leaves as long as the 
blades, those of the stem leaves shorter, hirsute; peduncles 2h to 60 min. long, 
hirsute, stout: bracts elliptical, scarious, 12 to 15 mim. long and 5 to 8 mm, 
wide, acute or sometimes cuspidate ; flowers many, 2 cm. long, with a limb about 
3mm. wide, tubes densely puberulent : fruit harrowly turbinate, 9 mm. long and 
© mun. wide, with a very small body and 4 or 5 narrow wings which are 2.5 mm. 
wide, thin, rounded above, and projecting considerably above the body; the 
outline of the fruit harrowly obcordate, the beak short and small, hispidulous 
on beak and top of wings: seed 2 mun. long, dark brown, linear in outline. 
The fruit of this plant is quite unlike that of A. fragrans, to which the species 
is most closely related: the pubescence, too, is more dense. Type in the 
herbarium of the Missouri Botanical Garden, collected at Santa Fe, New 
Mexico, May 19, 1847, Fendler 739, growing in “moist places near fields, ete.” 
A sheet of the same collection in the National Herbarium was labeled “A. 
