Vol. ill.] 



BELLFLOWER FAMILY. 



253 



X- Corolla campanulate; flowers solitary, racemose, glomerate, or panicled. 

 Flower solitary at the end of the stem; arctic and alpine plants. 

 Corolla 4"-6" long; capsule-openings near the summit. 

 Corolla 6"-i2" long; capsule-openings near the base. 

 Flowers racemose, glomerate, or paniculate. 

 Corolla 7"-i5" long. 



Stem leaves linear, the basal orbicular, mostly cordate. 

 Leaves all ovate to lanceolate; plants pubescent or scabrous. 

 Flowers pedicelled in 1 -sided racemes. 

 Flowers sessile in terminal and axillary clusters. 

 Corolla 2" -5" long. 



Plant rough; style not exserted. 



Plant smooth, glabrous, slightly viscid; style long-exserted. 



X- -X- Corolla rotate; flowers spicate. 



i. C. uni flora. 



2. C. rotundifolia. 



2. C. rotundifolia. 



3. C. rapunculoides. 



4. C. glornerata. 



5. C. aparinoides. 



6. C. divaricata. 



7. C. Americana. 



Campanula unifldra L. 

 Bellflower. (Fi: 



Arctic Harebell or 

 3490.) 



Campanula uniflora L- Sp. PI. 163. 1753. 



Perennial, glabrous or nearly so; stem simple, i-flow- 

 ered, i f -6 f high. Leaves linear or linear-oblong, acute, 

 sessile, thickish, entire or sparingly dentate, 9 // -i8 // long, 

 or the lower and basal ones spatulate, obtuse and nar- 

 rowed into petioles; flower erect; calyx-tube turbinate, 

 glabrous or pubescent, shorter than or equalling the lobes; 

 corolla campanulate, 4 // -6 // long, blue; capsule cylindric 

 or club-shaped, about 6" long, erect, opening by valves 

 near the summit. 



Labrador and Arctic America to Alaska, south in the Rocky 

 Mountains to Colorado. Also in northern Europe and Asia. 

 Summer. 



2. Campanula rotundifolia L. 



Harebell. Blue Bells of Scotland. 



(Fig. 3491.) 



Campanula rotundifolia L- Sp. PI. 163. 1753. 

 Perennial by slender rootstocks, glabrous 

 or nearly so; stems erect or diffuse, often sev- 

 eral from the same root, simple or branched, 

 6 / -3 high. Basal leaves nearly orbicular or 

 broadly ovate, usually cordate, slender-peti- 

 oled, % f -l' wide, dentate or entire, often 

 wanting at flowering time; stem leaves linear 

 or linear-oblong, acute, mostly entire, sessile, 

 or the lower narrowed into short petioles and 

 somewhat spatulate; flowers several or nu- 

 merous, racemose (rarely solitary), drooping 

 or spreading, slender-pedicelled; calyx-lobes 

 subulate,spreading, longer than the short-tur- 

 binate tube; corolla blue, campanulate, 7"- 

 I2 // long; capsule obconic or ovoid, pendulous, 

 ribbed, opening by short clefts near the base. 



On moist rocks and in meadows, Labrador to Alaska, south to New Jersey, Pennsylvania, Illi- 

 nois, Nebraska, in the Rockv Mountains to Arizona and in the Sierra Nevada to California. Also 

 in Europe and Asia. Other English names are Thimbles, Lady's Thimble, Heath or Witches' Bells, 

 Round-leaved Bellflower. June-Sept. 



Campanula rotundifolia Langsdorfiana (A. DC.) Britton, Mem. Torr. Club, 5: 309. 1894. 



C. linifolia var. Langsdorfiana A. DC. Prodr. 7: 471. 1839. 



C. rotundifolia var. alpina Tuckerm. Amer. Journ. Sci. 45: 27. 1843. 



Flower commonly solitary, erect, nearly or quite 1' long; calyx-lobes nearly filiform, spreading 

 or defiexed. Summits of the White Mountains of New Hampshire; Quebec to Labrador and Arctic 

 America. 



Campanula rotundifolia velutina DC. Fl. France, 6: 432. 1815. 



Stem and leaves pubescent or canescent. Sand hills, Burt L,ake, Michigan (according to Gray). 



