192 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
The type collection was originally determined as H. luteus Nutt., but that 
is a smaller plant with smaller heads and more leafy stems. Our plant sug- 
gests H. arenosus, but that, too, has smaller heads and lower, more leafy stems. 
Picradeniopsis dealbata (A. Gray) Wooton & Standley. 
Bahia dealbata A. Gray, Mem. Amer. Acad. n. ser. 4: 99, 1849. 
Bahia absinthifolia deatbata A. Gray, Pl. Wright. 1: 121. 1852. 
Hymenoxys brachyactis Wooton & Standley, sp. nov. 
Perennial or possibly biennial, from a thick tap-root; stems solitary, very 
stout, simple at the base, with a few erect, corymbose branches above; basal 
leaves long-petiolute, once or twice pinnatifid into numerous narrowly linear 
segments; cauline leaves very numerous, all once or twice pinnatifid into linear 
or filiform divisions, the lower leaves with very numerous divisions, the upper 
with but few; heads numerous, 6 mm. in diameter, on short, slender, glabrous 
peduncles; involucres glabrous, 5 mm. high, the outer bracts lanceolate, acute, 
strongly keeled, united for nearly half their length, the inner ones very obtuse, 
short-acuminate, tomentose on the margins; rays pale yellow, cuneate-obovate, 
much shorter than the involucral bracts, usually not more than half as long; 
disk flowers bright yellow, sparingly glandular; achenes villous with pale tawny 
hairs; palee of the pappus long-attenuate, two-thirds as long as the disk 
corollas. 
Type in the U. S. National Herbarium, no. 690242, collected near East View, 
August 4, 1906, by E. O. Wooton. 
The plant has the size and habit of H. rusbyi, but it has very different leaves 
and heads. Its most striking characteristics are its tall, stout, simple stems, 
its finely divided Artemisia-like foliage, and the numerous small, angled heads. 
Hymenoxys cockerellii Wooton & Standley, nom. nov. 
Hymenoxys chrysanthemoides jugta Cockerell, Bull. Torrey Club 31: 508. 
1904. 
This seems to be a distinct species, differing conspicuously enough from 
H. chrysanthemoides, as orginally pointed out by Professor Cockerell. Ordi- 
narily, in raising a subspecies to specific rank we should not think of changing 
the subspecific name unless it were preoccupied. There is, however, so far 
as we know, no precedent for the use of a preposition as a specific name, 
nor do we think it desirable or even permissible that one be established. 
Hymenoxys mearnsii (Cockerell) Wooton & Standley. 
Hymenoxrys chrysanthemoides mearnsii Cockerell, Bull. Torrey Club 31: 506. 
1904. 
A common species of southern New Mexico, ranging from the southwest 
_ eorner as far east as the Pecos Valley. It is the smallest of our annual forms. 
Tetraneuris formosa Greene, sp. nov. in herb. 
Perennial from a thick root; caudices cespitose, thickened; basal leaves 
oblanceolate-spatulate, 60 cm. long and 9 mm. broad or smaller, obtuse, green, 
sparingly silky-pubescent on both surfaces, glandular-punctate; peduncles about 
20 cm. long, slender, bearing 2 or 38 small leaves near the base, rarely branch- 
ing, pubescent with few loosely appressed hairs; heads large, the involucres 
12 mm. broad and 7 or 8 mm. high; bracts oblong, obtuse, densely silky-villous; 
rays large, extending 15 mm. beyond the involucre, 7 or 8 mm. broad, with 3 
rounded teeth at the apex, conspicuously veined; achenes villous; palee of 
the pappus ovate, with long, abruptly acuminate tips. 
Type in the U. S. National Herbarium, no. 498042, collected on dry hills near 
Kingston, Sierra County, at an altitude of 1,980 meters, August 22, 1904, by 
O. B. Metcalfe (no, 1285). : 
