T6 PRIMTJLACEJEL 



PRIMTJL \CFJE. 



Leaves all radical: nodding flowers on a naked scapo in a bracteate umbel 1 



Leaves radical or crowded on tufted stems, cuneate-spatulate, 5-7-toothed at apex. ... 2 



Leaves in a whorl at top of stem, bracts below: corolla rotate, rose to white. . . 3 



Leaves all or mostly opposite: flowers axillary. 



Flowers small, yellowish, in close clusters; corolla rotate 4 



apetalous, solitary, purplish or white 5 



solitary: corolla rotate on slender pedicel. 6 



Leaves all or mostly alternate: flowers solitary, minute 7 



flowers in paniculate racemes, very small 8 



1. DODECATHEON, Linnzeus. 



* Short filaments united to form with the closely connivent antliers a dark colored beak sur- 

 mounting the short corolla tube. 

 Capsule obtuse, splitting at or from the apex into valves. 



Leaves from narrowly to broadly spatulate: capsule oblong or longer 1 



Leaves obovate or oval, short, base cuneate: capsule globular 2 



Capsule cylindraceous; apex not splitting, but coming off as a lid 3 



* Short distinct filaments included in the corolla throat, only the anthers txserted: leaves 

 oval or ovate to oblong, not tapering at base 4 



1. D. Jefireyi, Moore. Often very large: capsule exceeding calyx. 



2. D. ellipticum, Nutt. Leaves to 2 inches long: calyx minutely glandular. 



3. D. Henderson!, Gr. Like the last except the thin-walled exserted capsule. 



4. D. frigidum, C. & S. var. dentatum. Leaves commonly repand or dentate. 



2. PRUTOXA, Linnaeus. 



1. P. suffrtitescens, Gr. Scape 2 to 4 inches long: umbel of several red-purple 

 flowers. 



3. TRIENTALIS, Linnaeus. 



1. T. Europaoa, L. Flowers on slender pedicels among the leaves. Our plants are,' 

 Var. latifolia, Torr., with leaves mostly acute, to 4 inches long, and 

 Var. arctica, Ledeb., with obtuse or retuse leaves an inch long or less. 



4. LYSIMACHIA, Tournefort. 

 1. L. thyrsinora, L. Leaves lanceolate: small teeth between corolla lobe*. 



6. GLAUX, Tournefort. 

 1. G. maritima, L. Succulent, pale green, 3 or 4 inches high, leafy. 



