WOOTON AND STANDLEY—NEW PLANTS FROM NEW MEXICO. 159 
10 lobes linear, acute, glabrous, 5 to 6 mm. long; tube of the corolla very 
short, the lobes obovate, 8 or 9 mm. long, acute; capsules glabrous, 7 or 8 
mm. high. 
Type in the U. 8S. National Herbarium, no. 45767, collected in the Organ 
Mountains in August, 1881, by G. R. Vasey. 
ADDITIONAL SPECIMENS EXAMINED: La Luz Canyon, August 27, 1901, Wooton; 
Duck Creek Flats, 1903, Metcalfe 770. 
The type was distributed as VM. scoparia Engelm., but that has fewer, shorter 
calyx lobes. The species is more closely related to J/. scabra, but differs in 
being glabrous throughout instead of scabrous. 
GENTIANACEAE, 
Dasystephana rusbyi (Greene) Wooton & Stamdley. 
Gentiana rusbyi Greene; A. Gray, Syn. FI. 2': 406. 1878. 
APOCYNACEAE. 
Apocynum angustifolium Wooton, sp. noy. 
Stems slender, tall, much branched, the branches strongly ascending, glabrous ; 
leaves narrowly oblong-lanceolate, 7 to 10 cm. long, 1 to 2 cm, wide, glabrous, 
bright green on both surfaces, acute or rather abruptly acute, mucronate, acute 
at the base or the lowest rounded, all at least short-petioled, the upper with 
petioles 5 mm. long; cymes few, densely flowered, on slender peduncles 8 to 5 em. 
long; bracts small, linear-lanceolate, attenuate, somewhat scarious; calyx 1.5 mm. 
long or less, glabrous, the lobes lanceolate, acute; corolla greenish white, 3 to 
3.5 mm. long, narrow, with short, erect lobes; follicles slender, 9 to 12 cm. long, 
3 to 4 mm. in diameter, glabrous. 
Type in the U. 8. National Herbarium, no. 564822, collected in the Gila 
River bottom near Cliff, Grant County, June 13, 1903, by O. B. Metcalfe (no. 
182). Altitude 1,350 meters. 
ADDITIONAL SPECIMENS EXAMINED: Mimbres, alt. 1,650 meters, July 1, 1904, 
Metcalfe 1070; Lower Plaza, July 25, 1900, Wooton; Eagle Creek, 1899, Turner 
129. . 
A very distinct species of the cannabinum group, distinguished by its narrow, 
bright green leaves, nearly all of them acute at the base. 
Apocynum viride Wooton & Standley, sp. nov. 
Plant 1 meter high or more, with numerous erect, slender, glabrous branches ; 
leaves narrowly elliptic-oblong, bright green, glabrous, 6 to 10 cm, long, 15 to 
30 mm. wide, acute or abruptly short-acuminate, rounded or acutish at the base, 
on slender petioles 3 mm. long or less; cymes few, compact, 80 to 385 mm. wide, 
many-flowered, on slender peduncles 15 to 30 mm. long; bracts linear, thin; calyx 
1 to 1.5 mm. wide, glabrous, with lanceolate, acute lobes; corolla 2 to 3 mm. 
long, pinkish, glabrous, with short, erect lobes, 
Type in the U. S. National Herbarium, no. 499829, collected at Gilmores 
Ranch on Eagle Creek in the White Mountains, Lincoln County, August 25, 
1907, by E. O. Wooton and Paul C. Standley (no. 3451). Altitude 2,220 meters. 
ADDITIONAL SPECIMENS EXAMINED: Farmington, alt. 1,550 meters, 1911, Stfand- 
ley 6970; Cedar Hill, alt. 1,900 meters, 1911, Standley 8003; Las Vegas, July, 
1881, Vasey; near Pecos, alt. 2,010 meters, 1908, Standley 5044; Reserve, July 
9, 1906, Wooton; Fresnal, July 21, 1899, Wooton; Sapello Creek, August 22, 
1900, Wooton; Gilmores Ranch, July 27, 1901, Wooton. 
Similar to A. cannabinum L., but differing in its narrow, bright green, 
glabrous leaves, aS well as in other minor characters. 
