Colorado Four O'clock

Quamoclidion froebelii (Behr) Standley, Contr. U. S. Nat
Herb. 12: 359. 1909.
Oxybaphus Froebelii Behr, Proc. Calif. Acad. 1: 69. 1855.
Mirabilis multi flora pubescens S. Wats. Bot. Calif. 2: 2. 1880.
Mirabilis Froebelii Greene, Bull. Calif. Acad. 1: 124. 1885.
Mirabilis multi flora Froebelii M. B. Jones, Contr. West. Bot. 10: 49. 1902.
Quamoclidion Froebelii glabratum Standley, Contr. U. S. Nat. Herb. 12: 360. 1909.
Mirabilis Froebelii glabrata Jepson, Fl. Calif. 458. 1914.
Plants erect or ascending, 3-6 dm. high, much branched, the branches stout, densely shortvillous and viscid throughout, or rarely glabrate; petioles stout, 0.3-3 cm. long; leafblades broadly deltoid-ovate, reni form-orbicular, rounded-ovate, or oblong-ovate, 4-10 cm long, 2-7.5 cm. wide, rounded to broadly cordate at the base and short-decurrent, rounded to acute at the apex, often abruptly acute or apiculate, thick and succulent, pale-green, densely shortvillous or puberulent and viscid on both surfaces or rarely glabrate ; peduncles numerous, 0.4-3.5 cm. long, solitary in the lower axils and cymosely clustered at the ends of the branches, the cymes usually very leafy, the subtending leaves often much reduced and bractlike; involucre campanulate, usually 6-8-flowered, 2.2-3.5 cm. long, densely shortvillous and glandu-
lar-puberulent, the 5 lobes equaling or usually shorter than the tube, triangular to ovateoblong, acute or obtuse; perianth purplish-red, 3.5-4.5 cm. long, short-villous and viscid outside, the tube 4-8 mm. in diameter, expanded into a shallowly 5-lobed limb 2-2.5 cm. broad; stamens equaling or slightly exceeding the perianth; fruit elliptic-oval in outline, narrowed at both ends, about 8 mm. long and 6 mm. in diameter, olive mottled with brown, marked with 10 vertical light-colored lines, smooth, glabrous.
Type locality : Near Warner's Ranch, southern California.
Distribution: In dry sandy soil, western Nevada, southeastern California, and northern Lower California.

Quamoclidion froebelii (Behr) Standley, Contr. U. S. Nat
Herb. 12: 359. 1909.
Oxybaphus Froebelii Behr, Proc. Calif. Acad. 1: 69. 1855.
Mirabilis multiflora pubescens S. Wats. Bot. Calif. 2: 2. 1880.
Mirabilis Froebelii Greene, Bull. Calif. Acad. 1: 124. 1885.
Mirabilis multi flora Froebelii M, E. Jones, Contr. West. Bot. 10: 49. 1902.
Quamoclidion Froebelii glabratum Standley, Contr. U. S. Nat. Herb. 12: 360. 1909.
Mirabilis Froebelii glabrata Jepson, Fl. Calif. 458. 1914.
Plants erect or ascending, 3-6 dm. high, much branched, the branches stout, densely shortvillous and viscid throughout, or rarely glabrate; petioles stout, 0.3-3 cm. long; leafblades broadly deltoid-ovate, reniform-orbicular, rounded-ovate, or oblong-ovate, 4-10 cm long, 2-7.5 cm. wide, rounded to broadly cordate at the base and short-decurrent, rounded to acute at the apex, often abruptly acute or apiculate, thick and succulent, pale-green, densely shortvillous or puberulent and viscid on both surfaces or rarely glabrate; peduncles numerous, 0.4-3.5 cm. long, solitary in the lower axils and cymosely clustered at the ends of the branches, the cymes usually very leafy, the subtending leaves often much reduced and bractlike; involucre campanulate, usually 6-8-flowered, 2.2-3.5 cm. long, densely shortvillous and glandular-puberulent, the 5 lobes equaling or usually shorter than the tube, triangular to ovateoblong, acute or obtuse; perianth purplish-red, 3.5-4.5 cm. long, shortvillous and viscid outside, the tube 4—8 mm. in diameter, expanded into a shallowly 5-lobed limb 2-2.5 cm. broad; stamens equaling or slightly exceeding the perianth; fruit elliptic-oval in outline, narrowed at both ends, about 8 mm. long and 6 mm. in diameter, olive mottled with brown, marked with 10 vertical light-colored lines, smooth, glabrous.
Type locality: Near Warner's Ranch, southern California.
Distribution : In dry sandy soil, western Nevada, southeastern California, and northern Lower California.