KEY. 241 



their petioles sheathing its base. Perianth white, or bluish- 

 white. Filaments subulate. Pod obovate. Seeds numerous. 



Erythronixim albidum, Nutt. 



740. Perianth about 1 inch long. Filaments shorter 

 than the long linear anthers. Pod 6- to many-seeded. Style 

 deeply 3-clef t. Flowers pale yellow, commonly solitary (rare- 

 ly in pairs). Peduncles terminal, at length lateral, by the 

 growth of the branches. Leaves sessile, or clasping-2)er- 

 Ibliate. Uvularia. 



Perianth half an inch long. Filaments filiform, 

 much longer than the linear-oblong, blunt anthers. Berry 

 3- to G-seeded. The 3 stigmas of the style short. Leaves 

 rounded or cordate at the base, ovate-oblong, taper-pointed, 

 closely sessile. Flowers solitary, or mostly in pairs, greenish- 

 yellow. Herb downy. Prosartes lanuginosa, Don. 



y^l. Cells of the pod 1-seeded. Leaves mostly hairy; 



grass-like, flat. Xjuzula. 



Cells of the pod many-seeded. Leaves never hairy, 



channelled, or semiterete, or wanting, and in their place 



sheaths only. (710) Juncus. 



74S. (729.) Filaments woolly; anthers linear. Sepals 

 linear, lanceolate, yellow. Pod cylindrical-oblong, pointed 

 with the style, which is terminated by a simple stigma, 

 many-seeded. Seeds furnished Avith a long bristle-form 

 tail at each end. Rhizome creeping, with linear, equitant 

 leaves, and a scape, C-18 inches high, bearing a single 

 raceme. Narthecium Americanunij Kei-. 



Filaments not woolly. Leaves not equitant . . . 743 



743. The 3 inner sepals of the lily-like perianth each 

 with a tooth on each side, at the base. Leaves 2, elliptical- 

 lanceolate, pale green, spotted with purplish, and dotted, a 

 little above the ground. Style club-shaped; stigmas united. 

 Flower pale yellow, at least 1 inch long, drooping. Scape 

 G-9 inches long. 



(739) Erythronium Americanum, Smith. 

 Sepals without teeth 744 



744. Flowers very large, 2-4 inches long, orange-color, 

 or scarlet, spotted with purple. Perianth funnel-form, or bell- 

 shaped; sepals each with a nectariferous, linear furrow at the 



