2. Allionia ┴lbida Walt. Pale Umbrella-Wort

Fig. 1727

Allionia albida Walt. Fl. Car. 84. 1788.

Oxybaphus albidus Choisy in DC. Prodr. 13: Part 2, 434. 1849. A. bracteata Rydb. Bull. Torr. Club 29: 690. 1902. A. lanceolata Rydb. Bull. Torr. Club 29: 691. 1902. A. chersophila Standley, Contr. Nat. Herb. 12: 354.

1909.

Stem erect, furrowed or striate, 4-sided below, 1°-3° tall, glabrous or short-pubescent above, or pubescent to the base, the peduncles and branches commonly glandular and viscous. Leaves lanceolate or oblong-lanceolate, 3-veined from the base, glabrous, pubescent or ciliate, the upper sessile, sometimes bract-like, the lower short-petioled; involucre much enlarged in fruit, pubescent, ciliate, becoming whitish and purple-veined; perianth pink, white or lilac; fruit with hispid ribs, roughened in the furrows.

South Carolina to Tennessee, South Dakota and Colorado, Florida, Louisiana and Texas. Consists of numerous races, differing in pubescence and width of leaves. May-Aug.

2 Allionia Lbida Walt Pale Umbrella Wort 692 Allionia Lbida Walt Pale Umbrella Wort 70

3. Allionia Hirs¨ta Pursh. Hairy Umbrella-Wort

Fig. 1728

Allionia hirsuta Pursh, Fl. Am. Sept. 728. 1814. Oxybaphus hirsutus Choisy in DC. Prodr. 13: Part 2, 433. 1849. Calymenia pilosa Nutt. Gen. 1: 26. 1818. Allionia pilosa Rydb. Bull. Torr. Club 29: 690. 1902.

Stem slender, 1°-3° tall, erect, angled and striate, glandular-pubescent and pilose, especially at the nodes, occasionally glabrate toward the base. Leaves lanceolate or linear-lanceolate, obtuse at the apex, sessile or the lowest sometimes short-petioled, pubescent, 1' - 3' long; branches and petioles very pubescent; inflorescence usually contracted; stamens often 5; fruit narrowly obovoid, the ribs obtuse, pubescent, sometimes with low intermediate ribs in the furrows.

In dry soil, Illinois to Saskatchewan, Wisconsin, Oklahoma and New Mexico. July-Aug.

4. Allionia Nyctaginea Michx. Heart-Leaved Umbrella-Wort

Fig. 1729

Allionia nyctaginea Michx. Fl. Bor. Am. 1: 100. 1803. Oxybaphus nyctagineus Sweet, Hort. Brit. 429. 1830. Allionia nyctaginea ovata Morong, Mem. Torr. Club 5: 146.

1894. Allionia ovata Pursh, Fl. Am. Sept. 97. 1814.

Stem angled, often 4-sided below, rather slender, glabrous or but slightly pubescent, 1°-3° tall. Leaves broadly ovate to oblong, 2'-4' long, 1' - 3' wide, acute at the apex, cordate, rounded, truncate or narrowed at the base, ail petioled except the small bract-like uppermost ones, glabrous or nearly so; peduncles and pedicels commonly pubescent; pedicels 6" long or less; involucre shorter than the flowers; perianth red; stamens 3-5, exserted; style exserted; fruit oblong or narrowly obovoid, very pubescent.

In dry soil, Illinois to Manitoba, Louisiana, Texas and Colorado. Adventive further east. May-Aug.

Allionia comÓta Small, of Texas, Arizona and New Mexico, differs in being viscid-hirsute; it is reported from Nebraska, perhaps erroneously.

4 Allionia Nyctaginea Michx Heart Leaved Umbrella  714 Allionia Nyctaginea Michx Heart Leaved Umbrella  72

5. Allionia CÓrletoni Standley. Carleton's Umbrella-Wort

Fig. 1730

Allionia Carletoni Standley, Contr. U. S. Nat. Mus. 12: 355. 1909.

Stem stout, simple or branched, softly pubescent to the base, about 3o high. Leaves ovate to lanceolate, thick, acutish at the apex, narrowed or rounded at the base, 2"-3' long, 1 1/4' wide or less, puberulent on both sides, short-petioled or almost sessile; inflorescence paniculate; involucres about 8" broad, softly pubescent, their lobes obtuse, ciliolate, their stalks 4"-5" long; fruit oblong, narrowed to both ends, glabrous, 2 1/2" long, prominently ribbed.

Kansas and Oklahoma. June-July.