Mirabilis oxybaphoides (A. Gray) A. Gray

Stems decumbent to prostrate, often tangled in other vegetation, 2-12 dm, herbaceous, puberulent in lines or throughout, glandular or not. Leaves spreading; petiole 0.5-3.5 cm; blade broadly deltate or ovate, 1.5-8 × 1-7.5 cm, fleshy, base cordate, apex usually acute or acuminate (rounded), surfaces glabrous or pubescent, and then often glandular. Inflorescences loosely and narrowly cymose; involucres solitary or clustered at ends of branches, or solitary in axils, 5-9 mm, lobes triangular, base 50-70% of height. Flowers 3 per involucre; perianth purplish to pale pink (white), 0.5-0.9 cm. Fruits olive, dark brown and black-mottled, or evenly black, sometimes faintly marked with 5 shallow grooves, broadly obovoid to nearly spheric, 2.5-3.5 mm, smooth or slightly rugose. 2n = 60.

Ariz., Colo., Nev., N.Mex., Okla., Tex., Utah; Mexico (Chihuahua, Coahuila, Nuevo León).

Flowering spring-fall.

Brush or boulders, banks in woodlands, moist areas; 1400-2600m.

Quamoclidion oxybaphoides A. Gray, Amer. J. Sci. Arts, ser. 2, 15: 320. 1853; Allionia oxybaphoides (A. Gray) Kuntze, Allioniella oxybaphoides (A. Gray) Rydberg

Allioniella oxybaphoides (A. Gray) Rydb. Bull. Torrey Club
29: 687. 1902.
Quamoclidion oxybaphoides A. Gray, Am. Jour. Sci. II. 15: 320. 1853.
Mirabilis oxybaphoides A. Gray, in Torr. Bot. Mex. Bound. Surv. 173. 1859.
Oxybaphus Wrightii Hemsl. Biol. Centr. Am. Bot. 3: 3. 1882.
Allionia oxybaphoides Kuntze, Rev. Gen. 533. 1891.
Mirabilis oxybaphoides glabrata Heimerl, Ann. Cons. Jard. Geneve 5: 180. 1901.
Allioniella oxybaphoides glabrata Standley, Contr. U. S. Nat. Herb. 12: 357. 1909.
Plants ascending or decumbent, from a thick fleshy root, much branched, usually forming dense clumps 4—12 dm. in diameter, the branches slender, green or whitish, densely viscidvillous with short hairs, or rarely glabrate, the internodes elongate; petioles slender or stout, 1-4 cm. long, viscid -villous or glabrate; leaf-blades deltoid-cordate or deltoid, often broadly so, 1.5-7 cm. long, 1.5-6 cm. wide, usually cordate at the base and broadly short-decurrent, sometimes truncate, acute to attenuate at the apex, often abruptly so, entire or undulate, thin, bright-green, viscidvillous, especially when young, or glabrate, ciliate; inflorescence cymose or axillary, the cymes few-flowered, leafy; peduncles slender, solitary, usually longer than the involucres, viscid-villous; involucres about 5 mm. long at anthesis and 1-1.5 cm. broad in age, viscid-villous, the lobes narrowly or broadly triangular, acute or attenuate, very unequal, usually longer than the tube; perianth 7-10 mm. long, sparsely pilose or glabrate, the limb 6-8 mm. broad; fruit ellipsoid or subglobose, 2.5-3 mm. long, olivaceous, marked with small elongate black spots or slightly elevated transverse ridges.
Type locality: Hast of El Paso, Texas.
Distribution: Dry stony or brushy hillsides, southern Colorado and Utah to Arizona and western Texas.

Allioniella oxybaphoides (A. Gray) Rydb. Bull. Torrey Club
29: 687. 1902.
Quarnoclidion oxybaphoides A. Gray, Am. Jour. Sci. II. 15: 320. 1853.
Mirabilis oxybaphoides A. Gray, in Torr. Bot. Mex. Bound. Surv. 173. 1859.
Oxybaphus Wrightii Hemsl. Biol. Centr. Am. Bot. 3: 3. 1882.
Allionia oxybaphoides Ktuitze, Rev. Gen. 533. 1891.
Mirabilis oxybaphoides glabrata Heimerl, Ann. Cons. Jard. Geneve 5: 180. 1901.
Allioniella oxybaphoides glabrata Standley, Contr. U. S. Nat. Herb. 12: 357. 1909.
Plants ascending or decumbent, from a thick fleshy root, much branched, usually forming dense clumps 4r-12 dm. in diameter, the branches slender, green or whitish, densely viscidvillous with short hairs, or rarely glabrate, the internodes elongate; petioles slender or stout, 1-4 cm. long, viscid -villous or glabrate; leaf-blades deltoid-cordate or deltoid, often broadly so, 1.5-7 cm. long, 1.5-6 cm. wide, usually cordate at the base and broadly short-decurrent, sometimes truncate, acute to attenuate at the apex, often abruptly so, entire or undulate, thin, bright-green, viscidvillous, especially when young, or glabrate, ciliate; inflorescence cymose or axillary, the cymes few-flowered, leafy; peduncles slender, solitary, usually longer than the involucres, viscid-villous ; involucres about 5 mm. long at anthesis and 1-1.5 cm. broad in age, viscid-villous, the lobes narrowly or broadly triangular, acute or attenuate, very unequal, usually longer than the tube; perianth 7-10 mm. long, sparsely pilose or glabrate, the limb 6-8 mm. broad; fruit ellipsoid or subglobose, 2.5-3 mm. long, olivaceous, marked with small elongate black spots or slightly elevated transverse ridges.
Type locality: East of El Paso, Texas.
Distribution: Dry stony or brushy hillsides, southern Colorado and Utah to Arizona and western Texas.