fruit orbicular, black or green with black stripes, 6-10 mm. in diameter. 



In seepage areas, wet meadows, sandy woodlands, shores and prairies, reported 

 from Okla. {Waterfall), in N. M. (Colfax, Grant and Taos cos.) and Ariz. 

 (Apache, Cochise, Coconino, Graham and Pima cos.), May-July; Nfld. to B.C., 

 s. to w. Va., O.. Ind.. 111., Mo., Kan., N.M., Ariz, and Calif. 



10. Streptopus Michx. Twisted-stalk 



Seven species of temperate North America and Eurasia. 



1. Streptopus amplexifolius (L.) DC. 



Perennial herb; rootstock short, stout, horizontal, covered with thick fibrous 

 roots; stem erect, usually branching below the middle, 4-10 dm. high, glabrous; 

 leaves ovate to lanceolate, 5-15 cm. long, 2.5-5 cm. wide, acuminate at apex, 

 cordate-clasping at base, glabrous, glaucous beneath; peduncles 2.5-5 cm. long, 

 1- or 2-fiowered; flowers 8-12 mm. long, greenish-white; perianth segments nar- 

 rowly lanceolate, acuminate, widely spreading or recurved above; anthers subulate- 

 pointed; stigma entire, obtuse to truncate; berry oval, 10-18 mm. long. 



In moist or wet woods, reported from Okla. {Waterfall), in mts. of N. M. 

 (San Miguel and Taos cos.) and Ariz. (Apache Co.), June-July; Alas, and 

 Lab. s. to Pa., N. M., Ariz, and Calif. 



11. Trillium L. Trillium. Wake-robin 



Perennial scapose herbs with subterranean or creeping tuberlike rhizomes, rarely 

 producing rhizomatal leaves; scapes 1 or 2 (very rarely 3 or more), each with a 

 whorl of 3 large foliaceous bracts subtending a solitary perfect flower at the sum- 

 mit; flowers pedicellate or sessile, 3-merous (occasionally 2-, 4-, or irregularly 

 parted), with the perianth in 2 distinct series; sepals distinct, usually green, some- 

 times suffused with purple adaxially; petals distinct, white, pink, yellow, greenish 

 or purple; anthers linear, adnate to the sides of connective or terminal; ovary 

 sessile, 3- or 6-angled or -winged; stigmas 3, sessile or on a distinct style; berry 

 3-locular, few- to many-seeded, indehiscent. 



About 40 species in temperate wooded regions of North America and eastern 

 Asia. Segregated with three closely allied genera by some authors as the family 

 Trilliaceae. 



1. Flowers pedicellate; corolla white or pink; gynoecium with a distinct style 



1. T. texaniim. 



1. Flowers sessile; corolla purple or yellowish-green; gynoecium with sessile 



stigmas 2. T. recurvatum. 



1. Trillium texanum Buckl. Fig. 337. 



Scapes 1-3 dm. tall; bracts sessile or abruptly narrowed into short petioles, 

 narrowly lanceolate to elliptic-lanceolate or oblong, obtuse to rounded, upper sur- 

 face somewhat farinose by the presence of numerous stomates, (3-) 4-6 (-8) cm. 

 long, (1-) 1.3-2 (-3) cm. wide; flowers on erect pedicels (2.5-) 3-4 (-4.5) cm. 

 long; sepals spreading, lanceolate, green, usually larger than the petals; petals 

 spreading, narrowly lanceolate to lanceolate, acute, often with a short claw, white, be- 

 coming pink and finally reddish with age, (1.5-) 2-2.5 (-3) cm. long, 7-10 (-14) 

 mm. wide; stamens 10-14 mm. long, the anthers slightly longer than the white or 

 pale-green filaments, the connectives often purple; gynoecium about as long as 

 the stamens, with a distinct style about as long as the ovary and stigmas equal to 

 or longer than the style; berry triangular-ovoid, sharply 6-ridged at base of per- 

 sistent style, 8- to 15-seeded. 



Extremely rare in low moist woods, bogs and stream banks in Tex. [Cass, 

 Houston and Panola (type locality) cos.], Mar.-May; replaced in Ark. and s.w. 



659 



