PRIMULACEAE. 
261 
Order 40. PRIMULALES. 
Family 105. PRIMULACEAE Vent. Primrose Family 
Corolla present. 
Corolla-lobes erect or spreading; stamens distinct. 
Corolla salverform or funnelform, its lobes imbricated; stamens included; 
plants scapiferous; leaves basal. 
Corolla-tube equalling or exceeding the calyx; style filiform; flowers 
conspicuous. i. Primula. 
Corolla-tube shorter than the calyx; throat constricted ; style very short; 
flowers minute. 2. Androsace. 
Corolla rotate, its lobes convolute or involute in the bud; stamens exserted ; 
plants leafy-stemmed. 
Flowers axillary, solitary; corolla-lobes broad, curved around the stamens ; 
staminodia conspicuous. 3. Steironema. 
Flowers in axillary short spikes; corolla-lobes long and linear; tube very 
short; staminodia tooth-like. 4. Naumburgia. 
Corolla-lobes reflexed ; stamens more or less inonadelphous; plants scapiferous. 
5. Dodecatheon. 
Corolla wanting; calyx with 5 petaloid lobes ; flowers solitary, sessile in the axils 
of the opposite stem-leaves. 6. Glaux. 
1. PRIMULA L. Primrose. 
Bracts of the involucre more or less gibbous at the base; lobes of the corolla 
deeply 2-cleft, i. e., at least one-fourth their length; leaves densely mealy 
beneath. 1. P. americana. 
Bracts of the involucre not gibbous below; lobes of the corolla merely emarginate 
or notched, rarely entire; leaves not mealy. 
Plant less than 1 dm. high, i-few-flowered; flowers less than 2 cm. long. 
2. P. angustifolia. 
Scape 1.5-5 dm. high, many-flowered; flowers over 2 cm. long. 
3. P. Parryi. 
1. Primula americana Rydb. (P. farinosa Hook.; not L.) In swamps and 
wet meadows from Ass. and Alb. to Colo.—Alt. about 8000 ft.—Near Lake 
John, North Park; Gunnison. 
2. Primula angustifolia Torr. On alpine peaks of Colo.—Alt. 9000-14,400 ft. 
—Saddle, Pike’s Peak; Marshall Pass; Gray’s Peak; Pike’s Peak; Berthoud 
Pass near Georgetown; West Spanish Peak; Sierra Blanca; headwaters of 
Clear Creek. 
3. Primula Parryi A. Gray. Along cool mountain streams from Mont, to 
Colo, and Ariz.—Alt. 9000-13,000 ft.—Bottomless Pit, Pike’s Peak; Berthoud 
Pass, near Georgetown; Cameron Pass; Tennessee Pass, 7 miles west of 
Leadville; tributaries of South Fork of Cache La Poudre River, Larimer 
Co.; Elk Mountains; Gray’s Peak; Slide Rock Canon; timber line above 
Cameron Pass; mountains south of Ward, Boulder Co.; Carson; summit of 
Mt. Garfield; headwaters of Clear Creek; Lake City; Caribou; Graymont; 
Beaver Creek; Berthoud Pass. 
2. ANDROSACE L. 
Perennials, cespitose and proliferous; corolla 5-8 mm. in diameter. 
1. A. carinata. 
Annuals, not cespitose-proliferous, or the last one may be perennial by rosettes; 
corolla 3-4 mm. wide. 
