WOOTON AND STANDLEY—NEW PLANTS FROM NEW MEXICO. 1938 
A specimen collected in the Magdalena Mountains in June, 1881, by G. R. 
Vasey appears to be the same, although it has more densely pubescent leaves 
and stems. 
The species is related to 7. leptoclada, but has very much longer rays and 
larger heads and is a taller plant. The pappus scales are broader and not 
so acute. 
Tetraneuris pygmaea (Torr. & Gray) Wooton & Standley. 
Actinella depressa pygmaea Torr. & Gray, Mem. Amer. Acad. n. ser. 4: 100. 
1849. 
The type came from the Raton Mountains of New Mexico. We have speci- 
mens from the Sandia Mountains that we take to be the same plant. It is 
similar to 7’. depressa, but the leaves are densely sericeous instead of villous, 
the heads are not nearly so large as in that species, and the rays are shorter 
than the involucre instead of equaling it. 
Artemisia albula Wooton, nom. nov. 
Artemisia microcephala Wooton, Bull. Torrey Club 25: 455. 1898, not Hillebr. 
1888. 
Artemisia petrophila Wooton & Standley, sp. nov. 
Low shrub, 30 to 40 cm. high, the lower branches spreading, bearing numerous 
very slender, mostly simple, erect ones; stems densely tomentose; the lower 
leaves, i. e. those of the older thicker branches, cuneate, 2 to 3 cm. long, 
densely white-sericeous, tridentate at the apex, the teeth oblong or oblong- 
lanceolate, obtuse; leaves of the upper slender branches oblanceolate to linear- 
oblong, entire, obtuse or acutish, white-sericeous, rather distant, never crowded ; 
inflorescence of very narrow panicles, the lateral branches not more than 2 cm. 
long, slender; heads homogamous, few-flowered, solitary or in small clusters, 
sessile or pedunculate, the peduncles soon recurved; involucre campanulate, 2.5 
mm. broad, the bracts few, in about two series, oblong, obtuse, densely tomentose. 
Type in the U. S. National Herbarium, no. 686323, collected on a dry sand- 
stone mesa at the north end of the Carrizo Mountains, July 28, 1911, by Paul C. 
Standley (no. 7355). 
ADDITIONAL SPECIMENS EXAMINED: NEW Mexico—Dry hills near Farmington, 
alt. 1,650 meters, July 17, 1911, Standley 7084. Arizona—Moki Reservation, 
1896, Hough 58. ‘ . 
This low shrub is similar to Artemisia tridentata, especially in herbarium 
specimens. Even here, however, it may be distinguished by its broader inflores- 
cence, recurved peduncles, campanulate heads, and rather distant, mostly entire 
leaves. In the field the two are very unlike. A. tridentata isa densely branched 
shrub usually a meter high, growing on the plains, while this is a low plant with 
slender, open, never dense branches, growing on the hills, usually among rocks. 
Senecio metcalfei Greene, sp. nov. in herb. 
Perennial, multicipitous, from a rather stout, ascending, somewhat woody 
rootstock; stems scapiform, 20 cm. high or mostly less, stout, glabrous or with 
very scanty tomentum; leaves numerous, erect or somewhat spreading, less 
than half as long as the stem, rather thick and firm, dull green, oblanceolate or 
narrowly spatulate, obtuse, mostly entire or some with 2 or 3 low, incon- 
spicuous teeth, glabrous except the very youngest, these with a scanty tomen- 
tum, narrowed at the base into a petiole as long as the blade or shorter; leaf 
blades 45 mm. long and 15 mm. wide or smaller; stems almost naked but with 
a few much reduced leaves; heads few, on short peduncles, campanulate, mostly 
about 9 mm. long or smaller; peduncles mostly naked; bracts linear or linear- 
