168 CONVALLARIACEAE 



1. U. canadense (Desf.) Greene. Stem slender, 1-3-leaved (usually 2- 

 leaved), 5-18 cm. high, glabrous; leaves ovate or ovate-lanceolate, 2-8 cm. long; 

 berry pale red, speckled, about 4 mm. thick. Moist woods and thickets: Lab. 

 N.C. S.D. Mack. Boreal Submont. My-Jl. 



2. U. dilatatum (Wood) Howell. Stem 2-3-leaved, 2-4 dm. high, glabrous; 

 leaf-blades broadly cordate, acuminate, 5-10 cm. long and nearly as broad; 

 berry red, globose, about 6 mm. thick. Maianthemum bifolium dilatatum Wood. 

 Swampy places: Alaska Calif. Ida. Canadian Rockies. Submont. Mont. 

 Je-Au. 



3. STREPTOPUS Michx. TWISTED-STALK. 



Caulescent perennial herbs, with horizontal rootstocks. Leaves many- 

 nerved, broad, sessile or clasping. Flowers racemose on 1-3-flowered, extra- 

 axillary peduncles. Sepals and petals much alike, greenish or purplish, each 3, 

 distinct, with spreading or recurved tips. Petals keeled. Stamens 6, hypo- 

 gynous; filaments flattened, very short; anthers sagittate, opening by lateral 

 slits. Ovary 3-celled; stigmas 3-lobed or entire; ovules in 2 rows in each cavity. 

 Berry oval or globose; seeds numerous. 



Plant branched; pedicels geniculate; berry white. 1. S. amplexifolius. 



Plant simple; pedicels not geniculate; berry red. 2. S. curvipes. 



1. S. amplexifolius (L.) DC. Stem 3-10 dm. high, flexuose-branched; 

 leaves ovate or ovate-lanceolate, glabrous and glaucous, 5-13 cm. long; perianth 

 campanulate, greenish white, 8-12 mm. long; sepals and petals lanceolate, 

 attenuate; berry globose-ellipsoid, 8-12 mm. long. Damp woods: Greenl. 

 N.C.N.M. Ore. Alaska; Eu. Submont. Subalp. Je-Au. 



2. S. curvipes Vail. Perennial, with a rather slender rootstock; stem simple, 

 1-3 dm. high; leaves sessile, oval to oblong-lanceolate, 3-8 cm. long, acuminate; 

 perianth pale purple or rose-colored; sepals and petals lanceolate, 5-7 mm. long, 

 minutely glandular- pubescent inside; berry globose, 7-9 mm. thick. Open 

 woods: B.C. Ore. Alaska. Submont. Mont. Je-Jl. 



4. KRUHSEA Regel. 



Caulescent perennial herbs, with rootstocks. Leaves broad, sessile or slightly 

 clasping, several-nerved. Flowers usually solitary, inserted opposite the leaves. 

 Flowers rotate; petals and sepals with greenish reflexed tips. Stamens 6; filaments 

 very short; anthers 2-lobed. Ovary 3-celled, becoming a berry. Style none. 



1. K. streptopoides (Ledeb.) Kearney. Stem glabrous, 5-15 cm. high; 

 leaves 4-8, bright green, ovate-lanceolate, acute, 3-5 cm. long; pedicels recurved, 

 1 cm. long or less; sepals and petals deeply wine-colored at the base, with yellow- 

 ish green tips; fruit globose, bright red at maturity. . Smilacina streptopoides 

 Ledeb. Streptopus ajanensis Tiling. S. brevipes Baker. Kruhsea Tilingii 

 Regel. Woods: B.C.; Siberia. Mont. My. 



6. DISPORUM Salisb. 



Caulescent branched perennial herbs, with rootstocks. Leaves broad, many- 

 nerved, sessile or clasping, often oblique. Flowers terminal, solitary or in small 

 subumbellate clusters, drooping. Sepals and petals each 3, whitish or greenish 

 yellow, narrow, distinct. Stamens 6, hypogynous; filaments filiform, or some- 

 what flattened; anthers extrorse. Ovary 3-celled; stigmas entire or 3-cleft; 

 ovules 2 or more in each cavity. Fruit thick, juicy, (in ours) bright red or orange. 



Stigma 3-cleft; fruit deeply lobed, obtuse, papillose. 1. D. trachycarpum. 



Stigma entire; fruit acutish, not papillose, but often pubescent. 2. D. oreganum. 



1. D. trachycarpum S. Wats. Stem 3-6 dm. high, more or less flexuose, 

 more or less pubescent; leaves sessile, ovate or oval to ovate-lanceolate, 3-9 cm. 

 long, short-acuminate; perianth narrowly campanulate, ochroleucous, 10-15 

 mm. long; fruit depressed-globose, deeply 3-lobed, 8-10 mm. thick. Prosartes 

 trachycarpa S. Wats. D. majus Britt., in part. Canons and hillsides: Man. 

 N.M. Ariz. B.C. Plain Subalp. My-Je. 



