WOOTON AND STANDLEY—NEW PLANTS FROM NEW MEXICO. 147 
in a moist canyon (Turkey Canyon) on the west side of the San Luis Moun- 
tains. It is the largest seen, measuring 225 cm. in circumference one meter 
above the ground. The trunk is of about the same size for 6 meters, when it 
divides into 3 branches of nearly equal size. The height was estimated at 
about 18 meters. There are several tyees in the neighborhood which approach 
this one in height.” 
The tree also occurs in southeastern Arizona. Possibly the Mogollon Moun- 
tain specimens mentioned above are true Acer grandidentatum. 
MALVACEAE. 
Malvastrum micranthum Wooton & Standley, sp. noy. 
Stems numerous, stout, erect, 20 em. high or less, much branched above, the 
branches ascending, densely and finely stellate-pubescent; leaves mostly about 
12 mm. long, rarely as much as 18 mm., 3-cleft, the divisions all of about the 
same length, most of them deeply 3-lobed, the lobes oblong-oblanceolate, entire, 
rounded at the apex, densely stellate-pubescent beneath, sparingly so above; 
flowers few, only 3 to 5, approximate at the end of each branch; pedicels stout, 
8 mm. long; calyx 3 to 4 mm. high, the lobes ovate-lanceolate, acute, longer than 
the tube; petals orange, 8 mm. long or shorter; fruit depressed ; ecarpels 9 or 
10, finely stellate-pubescent, not cuspidate, semioblong, aintly reticulate on 
the inner surface: seeds solitary, filling the carpel. 
Type in the U. S. National Herbarium, no. 561154, collected by E. O. Wooton 
near Tiznitzin, August 4, 1904 (no. 2673). 
ADDITIONAL SPECIMENS EXAMINED: Mountains southeast of Patterson, August 
16, 1900, Wooton. 
A very distinct species because of its small flowers and small, peculiarly 
divided leaves. 
Sphaeralcea arenaria Wooton & Standley, sp. nov. 
A low perennial, 80 em. high or less, from a thick, woody root; stems slender, 
erect or spreading, much branched in age, densely stellate-pubescent with a 
rather grayish, close pubescence ; petioles one-third as long as the blades or less; 
blades lanceolate, subhastate, rather obtuse, broadly cuneate or rounded at the 
base, about 25 mm. long, densely and finely grayish stellate pubescent on both 
surfaces; flowers axillary. solitary; leaves of the inflorescence but little re- 
duced; pedicels slender, 5 to 10 mm. long; calyx 7 or 8 mm. high, the lobes 
lanceolate, acute, densely stellate-pubescent ; petals obovate, emarginate, 12 mm. 
long, orange red; carpels numerous, 2-ovuled, 1-seeded, 5 or 6 mm. high, with a 
slender beak more than 0.5 mm. long, smooth above, reticulate below, densely 
stellate-pubescent on the back. 
Type in the U. 8. National Herbarium, no, 380390, collected by E. O. Wooton 
on the White Sands, Otero County, July 17, 1897 (no. 165). Altitude, 1,200 
meters. 
ADDITIONAL SPECIMENS EXAMINED: Albuquerque, Herrick; Providencia Lake, 
July 3, 1900, Wooton; mesa west of Organ Mountains, August 26, 1899, Wooton; 
near Suwanee, August 1, 1906, Wooton; White Sands, August 51, 1904, Wooton 
2662: between Tularosa and Mescalero Agency, June 22, 1895, Wooton. 
A common plant of the sandy mesas of southern New Mexico, coming into 
flower usually in late summer. It is low, with many spreading branches. It is 
similar to Sphaeralcea subhastata, but is finely instead of coarsely pubescent, 
and has thinner, mostly less lobed leaves, and the flowers are on long and 
slender pedicels rather than short, stout ones. 
