STANDLEY——-ALLIONIACEAE OF THE UNITED STATES. 357 
involucres rotate and somewhat enlarged when mature, 5-lobed; perianth short 
funnelform, almost campanulate, with 3 distinct stamens; fruit ellipsoidal], 
smooth or very obscurely tubercled, glabrous. 
1, Allioniella oxybaphoides (A. Gray) Rydb. Bull. Torr. Club 29: 687. 1902. 
Quamoclidion oxrybaphoides A. Gray, Am. Journ. Sci. IT. 15: 320, 1855. 
Mirabilis oryubaphoides A, Gray, Bot. Mex. Bound. 178. 1859. 
Oxybaphus wrightii Hemsl. Biol. Centr. Am. 3:3. 1882. 
Allionia orybaphoides Kuntze, Rev. Gen. Pl, 5338. 1891. 
Type locality, east of E] Paso (Texas). 
Specimens eramined: 
New Mexico: Organ Mountains, 1897, Wooton 587; Bear Mountain, near 
Silver City, 1908, Metcalfe 696; Gray, 1898, Skehan 103; Kingston, 
1904, Metcalfe 1459; 10 miles west of Santa Fe, 1897, Heller; Santa Fe, 
1881, Engelmann; Santa Fe Creek Valley, 1847, Fendler 746. 
ARIZONA: Mesa west of Buckskin Mountains, 1894, Jones 6060; near Par- 
tridge Spring, 1901, Leiberg 5904. 
CoLtorapo: Trail Glen, 1901, /. Clements 60; Manitou Springs, 1881, Hingel- 
nann,; Grape Creek Valley near Canyon City, 1881, Hngelmann; Wil- 
liams Canyon, 1875, Patterson; Webster Canyon, 1872, Redfield 554; 
Canyon City, 1873, Greene. 
Uran: Dirty Devil River below Rabbit Valley, 1875, Ward 417. 
jin. Allioniella oxybaphoides glabrata (Heimerl) Standley. 
Mirabilis orybaphoides glabrata Heimer], Ann, Cons. et Jard. Genev. 5: 180, 
1901, 
From the type this variety differs slightly, perhaps even too slightly to war- 
rant its separation as a variety, in having the stem glabrous below and only 
- slightly puberulent above. The following collections may perhaps be placed 
here: 
New Mexico: Capitan Mountains, 1900, Harle 399, type collection; Gallinas 
Mountains, 1904, Wooton 2825. 
Contorapo: Buena Vista, 1897, Crandall 2119. 
Texas: Gaudme, 1881, Harvard, 
ARIZONA: Northeastern Arizona, 1896, Hough 91. 
7. QUAMOCLIDION Choisy. 
Quamoclidion Choisy in DC. Prod. 137: 429. 1849. 
Perennial herbs, erect, branched, glabrous or pubescent; leaves opposite, 
entire, thick, petioled or sessile; flowers mostly large, several together sur- 
rounded by a gamophyllous, calyx-like involucre; perianth showy, corolla-like, 
with a tube of medium length, which is expanded into a wide or rather narrow, 
erect, or spreading limb; stamens 5, exserted; fruit hard, smooth, ellipsoidal 
to almost spherical, glabrous. 
The genus was founded by Choisy upon two species: The first, which is to 
be taken as the type, he called Q. nyctagineum, of which Mirabilis triflora 
Benth. was said to be a synonym; the second species was called Q. angulatum, 
and was referred doubtfully to the genus. Doctor Rydberg, in his treatment 
of the Rocky Mountain Allioniaceae. placed Orybaphus laevis Benth. in the 
genus, a plant which differs so widely from the type species in several respects 
that it has been placed in a new genus in this work, 
