PRIMUIiACEA. 141 



PRIMULACEJS. 



eves all radical : nodding flowers on a naked scape in a bracteate umbel 1 



'. -eaves radical or crowded on tufted stems, cnneate-spatnlate, 5-7-toothed at apex. ... 9 



Leaves in a whorl at top of stem, bracts below: corolla rotate, rose to white 8 



Leaves all or mostly opposite: flowers axillary. 



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



apetalons, solitary, purplish or white 6 



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, Linnaeus. 



* Short Jilanents united to farm with the closely connivcnt anthers a dark colored beat sur- 

 mounting the short corolla tube. 

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



Leaves from narrowly to broadly spat ul ate: 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 8 



' Short distinct filaments included in the corolla throat, only the anthers exserted: leaves 

 oval or ovate to oblong, not tapering at base 4 



1 D. Jeffrey!, 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. 

 *. D. frigidum, C. & S. var. deutatum. Leaves commonly repand or dentate. 



2. PRIMULA, Linnaeus. 



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

 flowers. 



8. TRIENTALJS, .Linnaeus. 



1. T. Europaea, L. Flowers on slender pedicels among the leaves. Oar plants are< 

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

 Var. arc tic a, Ledeb., with obtuse or retuse leaves an inch long or less. 



4. LYSIMACHIA, Tournefort. 

 1. I*, thyrsiflora, L. Leaves lanceolate: small teeth between corolla lobes. 



6. GLAUX, Tournefort. 

 i Q. maritima, L. Succulent, pale green, 3 or 4 inches high, leafy. 



