368 MELANTHACEiE. 



3, U. grandifiora Smith : leaves perfoliate, elliptic or ovate-elliptic, acute j 

 perianth smooth within ; anthers without awns. U. perfoliata,y ax. major 

 Mich. U. lanceolata Willd. 



Woods and hill sides. Can. to Car. W. to Miss. May, June. %. — Stem 

 12 — 15 inches high, with one or two forks near the summit. Flowers much 

 larger than in either of the preceding and of a brighter yellow. 



Large-flowered Bellwort. 



4. U. sessilifolia lAnn. : leaves sessile, ovate-lanceolate, somewhat glau- 

 cous beneath; segments of the perianth flat, smooth inside; anthers obtuse. 



Shady woods. Can. to Car. May. %. — Stem 8 — 12 inches high, forked 

 near the summit. Flowers 1 — 2 on a slender axillary peduncle, pale-yellow. 



Sessile-leaved Bellwort. 



8. PROSARTES. Z?o%.— Prosartes. 

 (From the Greek Trpoo-aipraw, to hang upon ; in allusion to the suspended ovules.) 

 Perianth 6 -leaved, campanulate-spreading ; the leafets with a 

 nectariferous pit, or saccate at base. Stamens 6 ; the filaments 

 inserted at the base of the perianth. Ovary 3 -celled, with 2 

 ovules suspended from the summit of each cell. Style single. 

 Stigmas 3, short, recurved. Berry ovoid, 3-celled. 



P. lanuginosa Don. : leaves ovate-oblong, acuminate, clasping, ciholate, 

 minutely pubescent beneath; pedicels in pairs; leafets of the perianth 

 linear-lanceolate ; style smooth. Slreptopus lanuginosus Mich. Uvularia 

 lanuginosa Pers. 



Woods. Western N. Y. to Car. May. 71 —Stem 12—18 ii;ches high, with 

 2 — 3 forks near the summit. Flowers yellowisii-green, on pubescent pedicels. 



Pale-flowered Prosartes. 



9. STREPTOPUS. iliicA.— Twisted Stalk. 



(From the Greek arpenTos, twisted, and Trovs,foot ; in allusion to a twist in the 

 pedicels.) 



Perianth 6 -leaved, campanulate at base ; the three inner 

 leaves carinate. Stamens 6, inserted at the base of the leaves. 

 Anthers sagittate, longer than the filaments. Style single, ta- 

 pering. Stigmas simple, obtuse. Berry globose, 3-celled. 



1. )S. roseus Mich. : leaves ovate-oblong, clasping, serrulate-ciliate on 

 the margin, green on both sides ; pedicels scarcely twice as long as the 

 flower, slightly geniculate near the middle ; anthers 2-cleft at the summit. 

 Uvularia rosea Pers. 



Woods and swamps, on mountains. Can. to Car. W. to Mich. May, June. 

 %. — Stem 12 — 18 inches high, di- or tri-chotomous at the upper part. Flowers 

 rose-colored, 1—^2 on filiform nodding axillary pedicels. Rose Twisted Stalk. 



2. S. amplexifolius D. C. : leaves oblong-ovate, closely clasping, glau- 

 cous beneath, the margin naked ; pedicels elongated, distorted and genicu- 

 late above the middle; anthers acuminate, entire, S. distortus Mich. Uvu- 

 laria ampiexifolia Linn. 



Shady woods and swamps. Can. to Penn. May, June. %■. — Stem about 2 



