Part 3, 1918] ALLIONIACEAE 227 
viscid-pilose with fulvous hairs, bearing numerous reduced sessile bractlike leaves; involucres 
few, short-pedunculate, 3-flowered, at anthesis 4-6 mm. long, densely viscid-pilose with short 
fulvous hairs, the lobes broadly ovate or ovate-orbicular, rounded or acutish at the apex; 
perianth sparsely pilose; fruit obovoid, 4-5 mm. long, puberulent, the angles narrow, smooth, 
the sides rugulose. 
TYPE LOCALITY: Swallow’s, between Pueblo and Canyon City, Colorado. 
DISTRIBUTION: Vicinity of the type locality. 
19. Allionia nyctaginea Michx. Fl. Bor. Am. 1: 100. 1803. 
Allionia ovata Pursh, Fl. Am. Sept. 97. 1814. 
Calymenia nyctaginea Nutt. Gen. 1: 26. 1818. 
Oxybaphus nyctagineus Sweet, Hort. Brit. 1: 334. 1826. 
Calyxhymenia paniculata Desf. Cat. Hort. Par. 390. 1829. 
Allionia cucullata Fisch. Mey. & Avé-Lall. Ind. Sem. Hort. Petrop. 9: 55. 1843. 
Oxybaphus glabrifolius minor Choisy, in DC. Prodr. 132: 431. 1849. 
Oxybaphus Cervantesit grandifolius Choisy, in DC. Prodr. 13?: 433. 1849. 
Oxybaphus floribundus Choisy, in DC. Prodr. 13?: 433. 1849. 
Oxybaphus cucullatus Choisy, in DC. Prodr. 13?: 434. 1849. 
Oxybaphus nyctagineus latifolius A. Gray, in Torr. Bot. Mex. Bound. Surv. 174. 1859. 
Oxybaphus nyctagineus oblongifolius A. Gray, in Torr. Bot. Mex. Bound. Surv. 174. 1859. 
Allionia floribunda Kuntze, Rev. Gen. 533. 1891. 
Mirabilis nyctaginea MacM. Metasp. Minn. Valley 217. 1892. 
Allionia nyctaginea ovata Morong, Mem. Torrey Club 5: 146. 1894, 
Mirabilis nyctaginea oblongifolia Heimerl, Beitr. Syst. Nyct. 23, excluding description. 1897. 
Mirabilis oblongifolia Heimerl, Ann. Cons. Jard. Genéve 5: 181, excluding description. 1901. 
Allionia oblongifolia Small, Fl. SE. U. S. 407, excluding description. 
Allionia latifolia Standley, Contr. U.S. Nat. Herb, 12: 350. 1909. 
Allionia foliosa Standley, Contr. U.S. Nat. Herb. 13: 409. 1911. 
Stems numerous from an elongate, somewhat fleshy root, erect or decumbent, stout, 
3-12 dm. high, simple or sparsely branched below, green or glaucescent, glabrous or bifariously 
puberulent; petioles slender, 1-3 cm. long, glabrous or sparsely puberulent; leaf-blades mostly 
deltoid or ovate-deltoid, sometimes ovate-cordate, ovate, or ovate-oblong, 4-12 cm. long, 
1.5-9 cm. wide, cordate to rounded at the base, acute to attenuate at the apex or rarely 
rounded, entire or subsinuate, thin, bright-green, glabrous, usually ciliolate; inflorescence 
sometimes wholly of axillary involucres but usually cymose, the cymes small and dense, leafy, 
the branches alternate, slender, pilose; involucres on slender elongate peduncles, 3-flowered, 
5—6 mm. long in anthesis, in age 10-17 mm. long, puberulent or short-pilose near the base, 
the lobes short, rounded or obtuse, often apiculate, glabrous, long-ciliate; perianth about 10 
mm. long, glabrous or very sparsely villous, white or-pale-pink, the limb 12-15 mm. broad; 
stamens 3-5, exserted; fruit obovoid, 5 mm. long, dark-brown or olivaceous, densely short- 
pilose, the angles broad, more or less rugulose, the sides rugulose or finely tuberculate; seed 
broadly obovoid, 3 mm. long, pale-brown. 
TYPE Locality: Banks of the Tennessee River. 
DIstRIBUTION: Montana to Wisconsin, southward to Colorado, Texas, and Alabama; Oaxaca; 
frequently adventive in the eastern United States. 
ILLUSTRATIONS: Britt. & Brown, Ill. Fl. f. 1416; ed. 2. f. 1729; Iowa Geol. Surv. Bull. 4: f. 68. 
20. Allionia Grayana Standley, sp. nov. 
Oxybaphus nyctagineus latifolius A. Gray, in Torr. Bot. Mex. Bound. Surv. 174, in part. 1859, 
Allionia nyctaginea latifolia Coult. Contr. U. 8. Nat. Herb. 2: 352, in part. 1894, 
Allionia latifolia Standley, Contr. U. S. Nat. Herb. 12: 350, excluding synonym. 1909. 
Stems erect, 3-12 dm. high, simple or sparsely branched below the inflorescence, glauces- 
cent, glabrous below or bifariously puberulent; petioles slender or stout, 0.5-2 cm. long, the 
uppermost leaves often sessile; leaf-blades deltoid or rounded-deltoid, sometimes broadly 
ovate, 2.5-5.5 cm. long, 1.5-3.5 cm. wide, subcordate, truncate, or rounded at the base, rounded 
or very obtuse at the apex or rarely acute, entire or subundulate, subcoriaceous when dry, 
often glaucescent beneath, sparsely pilose or glabrous, often ciliolate; inflorescence cymose- 
paniculate, usually much branched, the branches slender, mostly opposite, viscid-pilose, usually 
bearing numerous reduced bractlike leaves; involucres numerous, 3-flowered, slender-peduncu- 
late, 4-5 mm. long in anthesis, 10-14 mm. long in fruit, densely viscid-pilose, the lobes rounded- 
ovate, commonly rounded at the apex but sometimes acutish; perianth about 10 mm. long, 
