X6 PRIMULACEiE. 



PRIMULACEiE. 



Learea an ndioxi]: nodding flowers on a naked scape in a bracteate nmbel 1 



Leavea 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. . • ^ 8 



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, Linnaeus, 



• Short filaments united to form, with the closely connivent anthers a dark colored beak sur- 



mountinj 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 throaty only the anthers exseried: leaves 



oval or ovate to oblong, not tapering at base 4 



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



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



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

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



2. PRIMnLA, Linnaeus. 

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

 flowers. 



3. TRIENTALIS, Linnaeus. 

 1, T. Europsea, L. Flowers on slender pedicels among the leaves. Our planta arej 

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

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



4. liYSTMACHLA., Tournefort. 

 1. L. thyrsiflora, L. Leaves lanceolate: small teeth betweeu corolla lobea. 



5. GLATJX, Tournefort. 

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



