Part 3, 1918} ALLIONIACEAE 225 
tuberculate or composed of distinct tubercles, the sides also tuberculate; seed obovoid, 3.5 mm. 
long, pale yellowish-brown. 
TYPE LocaLity: South Carolina. 
DISTRIBUTION: Meadows and hillsides, South Carolina and Georgia to Tennessee, Kansas, 
and Texas. 
ILLUSTRATIONS: Britt. & Brown, Ill. Fl. f. 1417; ed. 2, f. 1727. 
14. Allionia lanceolata Rydb. Bull. Torrey Club 29: 691. 1902. 
Allionia sessilifolia Osterhout, Bull. Torrey Club 32: 611. 1905. 
Stems few or solitary, erect or ascending, 4-10 dm. high, stout, simple or sparsely branched 
below the inflorescence, sparsely puberulent or glabrate below, short-pilose above with mostly 
viscid hairs, the internodes short or elongate; leaf-blades sessile or on very stout petioles 4 mm. 
long or shorter, lanceolate or lance-ovate, 3.5-10 cm. long, 1-4 cm. wide, usually rounded at 
the base but sometimes obtuse or acute, gradually narrowed to the obtuse or acutish apex, 
entire or subsinuate, bright-green, or glaucescent beneath, glabrous or sparsely short-pilose, 
usually ciliolate; inflorescence paniculate, much branched, the branches slender, opposite, 
shortly viscid-pilose; involucres slender-pedunculate, about 4 mm. long at anthesis, in age 
about 1 cm. long, densely viscid-pilose, the lobes oval, rounded at the apex; flowers usually 3 
in each involucre, the perianth about 8 mm. long, sparsely pilose, pink; stamens 5, exserted; 
fruit obovoid, 5 mm. long, dark-olivaceous, finely hirtellous, the angles narrow, smooth, the 
sides rugose or short-tuberculate; seed obovoid, 2.5-3 mm. long, brownish-stramineous. 
Type LocaLity: Estes Park, Larimer County, Colorado. 
DistRiBuTION: Southern Wyoming and northern Colorado. 
15. Allionia aggregata (Ortega) Spreng. Syst. 1: 384. 1825. 
Calyxhymenia aggregata Ortega, Dec. 81. 1798. 
Mirabilis aggregata Cav. Ic. 5: 22. 1799, 
Calymenia aggregata Pers. Syn. Pl. 1: 37. 1805. 
Oxybaphus aggregatus Vahl, Enum. 2: 41. 1806. 
Allionia albida Coult. Contr. U. S. Nat. Herb. 2: 352, in part. 1894. Not A. albida Walt. 1788. 
Mirabilis pseudaggregata Heimer!, Ann. Cons. Jard. Genéve 5: 183. 1901. 
Mirabilis pseudaggregata subhirsuta Heimerl, Ann. Cons. Jard. Genéve 5: 184. 1901. 
Mirabilis pseudaggregata eglandulosa Heimerl, Ann. Cons. Jard. Genéve 5: 184. 1901. 
Allionia trichodonta Standley, Contr. U. S. Nat. Herb. 12: 354. _ 1909. 
Allionia pseudaggregata Standley, Contr. U. S. Nat. Herb. 12: 356. 1909. 
Allionia pseudaggregata subhirsuta Standley, Contr. U. S. Nat. Herb. 12: 356. 1909. 
Allionia hirsuta aggregata A. Nelson; Coult. & Nels. Man. 173, in part. 1909. 
Oxybaphus pseudaggregatus Weatherby, Proc. Am. Acad. 45: 425. 1910. 
Stems few or numerous, stout, erect or decumbent, 1.5-10 dm. high, sparsely branched 
or simple below the inflorescence, usually glabrous below but sometimes bifariously puberulent 
or short-pilose, glabrate, puberulent, or short-pilose above with mostly viscid hairs, or rarely 
sparsely hirsute, the internodes usually elongate; leaf-blades sessile or on very short stout peti- 
oles, linear-lanceolate, lanceolate, lance-obleng, or lance-ovate, 1.2-10 cm. long, 0.3-3 cm. 
wide, acute to long-attenuate at the base, gradually narrowed to the acute or obtuse apex, 
entire or sinuate, thick and succulent, green, or glaucescent beneath, glabrous or sparsely 
hirsute or short-pilose, often ciliate; involucres usually all axillary in young plants, in mature 
plants arranged in an ample cymose inflorescence, this sparsely branched, the branches slender, 
alternate, viscid-pilose, bearing few or numerous reduced bractlike leaves, the involucres 
slender-pedunculate, viscid-pilose, at anthesis 4-5 mm. long, in age 6-9 mm. long, the lobes 
ovate or oval, acutish or rounded; flowers usually 3 in each involucre, the perianth 8-10 mm. 
long, sparsely pilose, pink; stamens 3-5, exserted; fruit broadly obovoid, 3.5-5 mm. long, 
brownish or olivaceous, short-hirtellous, the angles broad, smooth or nearly so, the sides 
rugose or short-tuberculate; seed oval or obovoid, 2.5-3 mm. long, pale yellowish-brown. 
TYPE Locality: Mexico. . 
DISTRIBUTION: Western Texas and Chihuahua to the State of Mexico. 
ILLUSTRATIONS: Ortega, Dec. pl. 11; Cav. Ic. pl. 437, 
16. Allionia coahuilensis Standley, Contr. U. S. Nat. Herb. 12: 347. 
1909. 
Allionia Greggii Standley, Contr. U. S. Nat. Herb. 12: 348. 1909. 
Oxybaphus coahuilensis Weatherby, Proc. Am. Acad. 45: 425. 1910. 
