KEY TO THE SPECIES 59 



1. Vaccinium csespitosum Michx. (Dwarf Blueberry). Usually in dense 

 patches in moist woods. Stems dwarf, bushy-branched, 2-2 dm. high, branchlets 

 terete ; leaves from oblong-cuneate to obovate, minutely serrate, green, smooth 

 and reticulate veined ; flowers solitary in the axils ; berry blue, glaucous, about 6 

 mm. in diameter. Berry delicious. 



2. Vaccinium erythrococcum Eydb. (Red Blueberry). In dense patches 

 often of large extent. Freely branched from near the base, about 2 dm. high ; 

 the branches crowded, erect, slender, green, angled, sparsely leafy ; leaves small, 

 from ovate to narrowly oblong, 5-10 mm. long, glabrous and veinj' ; flowers small, 

 sub-globose, pinkish- white, nearly sessile ; berries finally dark red. In the 

 mountains. 



L. PRIMULACEiE (Peimeose Family) 



Herbs with simple leaves, regular sympetalous flowers, 5 

 stamens opposite the corolla-lobes, a single style, a 1-celled 

 ovary with ovules on a free central axis, and fruit a pod. 



* Scapose ; leaves clustered at the base ; flowers in umbels. 



1. Primula. Corolla-tube longer than the calyx ; style slender. 



2. Androsace. Corolla-tube shorter than the calyx ; style short. 



3. Dodecatlieon. Petals reflexed ; stamens monadelphous, forming a slender 

 projecting cone. 



* * Stems leafy ; flowers axillary. 



4. Steironema. Tall and leafy ; flowers large ; corolla rotate. 



5. Glaux. Small, with fleshy leaves ; corolla wanting. 



1. PRIMULA (Primrose) 



Herbs with flowers in an umbel, a 5-toothed calyx, a funnel-form or salver- 

 form corolla with 5 included stamens inserted opposite its lobes. 



1. Primula Americana Eydb. (American Primrose). Scape 1-3 dm. high, 

 mealy when young ; leaves more or less mealy, from oblong to spatulate, with 

 short, winged petioles ; bracts of the umbel linear-lanceolate, nearly equaling the 

 pedicels of the flowers but much shorter than the pedicels in fruit ; corolla lilac, 

 its tube scarcely longer than the calyx, lobes obcordate. Wet meadows. 



2. Primula Parryl Gray (Ii.l-smelling Primrose). Scapes stout, 2-5 dm. 

 high ; leaves large, succulent, spatulate to oblanceolate, 1-3 dm. long ; flowers 

 large and showy, 5-12, with glandular calyx, and rose-colored corolla with yellow 

 eye. Frequent on the margins of sub-alpine streams. 



3. ANDROSACE 



Small annuals or perennials with involucrate umbels of small white 5-merous 

 flowers, salver-form corolla and turbi-ate or globose capsules. 



1. Androsace diffusa Small (Spreading Androsace). Annual, pubescent ; 

 leaves rosulate, oblanceolate to spatulate, serrate or toothed, sessile or with short, 

 winged petioles ; scapes spreading, 8-8 cm, high ; the pedicels of the umbel very 

 unequal ; calyx turbinate-campanulate, with triangular teeth equaling or surpass- 

 ing the white or pink corolla. Open woods and in canons. 



