OP ARTS AND SCIENCES. 277 



2. V. intermedium, Chapman. Apparently very similar to the 

 last : leaves narrower : panicle more open and slender : pedicels 

 slender, 3 or 4 lines long, about equalling the flowers : perianth 

 pubescent : fruit unknown. — Flora, 489. Middle Florida. 



* * Stem stout, very leafy, the leaves broad-elliptical and sheathing : flowers 



yellowish-green or whitish, the segments serrulate or entire : ovary gla- 

 brous: capsule oblong-ovate, acute, many-seeded. 



3. V. viride, Ait. Stem 2 to 7 feet high : leaves acute, the upper- 

 most lanceolate and acuminate : branches of the simple panicle slender 

 and more or less drooping : bracts foliaceous, lanceolate, usually nearly 

 equalling the flowers : perianth greenish, adnate to the attenuate base 

 of the capsule ; segments oblanceolate, ciliate-serrulate, 4 to 6 lines 

 long : stamens 2 or 3 lines long : capsule an inch long. — Bigel. Med. 

 Bot. 2. 121, t. 33. Melanthium braeteolare, Desr. Helonias viride, 

 Ker, Bot. Mag. t. 1096. V. parvijlorum, Bong. V. Eschscholtzii, 

 Gray. Georgia to Canada, and thence to Washington Territory and 

 Alaska. 



4. V. Californicum, Durand. Similar : upper leaves lanceolate, 

 but rarely acuminate : branches of the sometimes compound panicle 

 ascending: bracts ovate-lanceolate, submembranous, usually little ex- 

 ceeding the pedicels : perianth-segments broader, obtuse, whitish with 

 greener base, often denticulate above, 3 to 8 lines long, slightly adnate 

 to the capsule : stamens 3 to 5 lines long : capsule an inch long or 

 more. — Journ. Philad. Acad. 3. 1 03. V. album, auth. Colorado and 

 Wyoming to N. California and Oregon. 



* * * Stem stout and leafy ; leaves oblong to lanceolate, mostly sheathing : 



perianth-segments fimbriate, somewhat biglandular : capsule obovate, 

 obtuse, few-seeded. 



5. V. fimbriatum, Gray. Leaves narrowed at base, 6 to 18 

 inches long by 2 to 6 wide or more, acute or acuminate : branches of 

 the panicle spreading : bracts ovate : perianth-segments rhombic-ovate, 

 3 to 5 lines long : capsule depressed and somewhat emarginate, 4 lines 

 long: seeds oblong, scarcely winged. — Proc. Amer. Acad. 7.391. 

 California (Mendocino County). 



41. STENANTHIUM, Gray. 



1. S. angustifolitjm, Gray. Stem leafy, 3 or 4 feet high, 

 very slender : leaves 2 or 3 lines broad : panicle elongated, nearly 

 simple, very open ; branches slender and flexuous : flowers polygamous 

 or subdicecious, nearly sessile or the fertile on short pedicels ; peri- 



