WOOTON AND STANDLEY—NEW PLANTS FROM NEW MEXICO. 155 
thick, sharply angled, the angles furnished below the top with stout, divaricate, 
hooked processes, the beak of the capsule stout, the whole finely puberulent. 
Type in the U. S. National Herbarium, no. 45766, collected at Socorro, in 
May, 1881, by G. R. Vasey. 
The stout, hooked beak on the wings distinguish this from all our other 
species; otherwise it is similar to Lavauria flava. 
Lavauxia taraxacoides Wooton & Standley, sp. nov. 
Caudex short and thick; leaves 20 to 30 cm. long, narrowly oblanceolate, 
deeply pinnatifid near the base into narrow, acute, distant lobes, the terminal 
portion merely slightly toothed, long-petioled, glabrous; calyx tube 18 to 20 cm. 
long, slender, glabrous; sepals 85 mm. long, glabrous; petals 35 to 40 mm. 
long; capsules oblong, 25 mm. high, acute at the apex, narrowly winged, 
glabrous or slightly puberulent. 
Type in the U. 8S. National Herbarium, no. 563856, collected in James Canyon 
of the Sacramento Mountains, July 6, 1899, by E. O. Wooton. 
ADDITIONAL SPECIMENS EXAMINED: Tularosa Creek, August 18, 1899, Wooton; 
White Mountain Peak, August 1, 1901, Wooton; James Canyon, June 26, 1899, 
Wooton; White Mountains, alt. 3,000 meters, August 16, 1897, Wooton 664. 
A species readily distinguished by its large leaves and flowers and by its 
lack of pubescence. 
Oenothera irrigua Wooton & Standley, sp. nov. 
Probably a biennial, 2 meters high or less, with very numerous stout, spread- 
ing branches; stems stout, terete, densely and finely canescent, also with 
numerous short, spreading hairs; basal leaves not seen, the cauline ones nar- 
rowly elliptic-lanceolate, 14 en’. long and 2 cm. wide or less, acute, narrowed to 
the base, sessile or on short, winged petioles, obscurely repand-denticulate, 
rather densely appressed-pubescent on both surfaces, grayish green; inflores- 
cence a short, dense raceme; ovary densely strigose; calyx tube rather stout, 
35 to 45 mm. long, strigose; sepals about 40 mm. long, separate when reflexed, 
the tips connivent in bud, 5 to 8 mm. long; petals 385 mm. long, yellow, drying 
purplish red; pistil slightly exserted; mature capsules not seen, but the im- 
mature ones columnar, densely silky-strigose, much exceeded by the floral 
leaves. 
Type in the U. S. National Herbarium, no, 561366, collected in the Mesilla 
Valley, Dona Ana County, in June, 1906, by E. O. Wooton and Paul C. Stand- 
ley. Altitude about 1,150 meters. The plant is very abundant along the banks 
of irrigating ditches and in moist cultivated fields. 
ADDITIONAL SPECIMENS EXAMINED: Mesilla Valley, July 25, 1907, Wooton & 
Standley; Farmington, August 8, 1904, Wooton 2732; Albuquerque, October 18, 
1894, Herrick; Aztec, July 1, 1895, Grigin; Mesilla Valley, [vah Afead,. 
. Aplant similar to O. hookeri, but much larger and more abundantly branched, 
and with very different pubescence. 
Oenothera macrosiphon Wooton & Standley, sp. nov. 
Perennial, 50 cm. high or less, with slender, weak, decumbent branches; 
stems several from each root, branched, hirsute, the hairs rising from 
papille, also minutely cinereous, but sparingly so; cauline leaves lanceolate or 
elliptic-lanceolate, 7 to 9 cm. long, 25 mm. wide or less, undulate, acute, 
cuneate at the base or rounded to a short, winged petiole, sparingly repand- 
denticulate, finely appressed-pubescent, hirsute along the veins, the leaves of 
the inflorescence slightly reduced; flowers few; calyx tube 15 to 19 cm. long, 
2 mm. thick, sparingly pilose; sepals 50 to 60 mm. long, the subulate tips 5 
mm. long or more; pistil and stamens included; petals 50 to 55 mm, long, deep 
