470 BOTANY. 



pink, 7-9" long, long-funnelform, 4-5 times exceeding the calyx, tlie proper tube usually much exserted, 

 the broad obovate lobes exceeding the stamens. — S. California. 



53. G. INOONSFICUA, Dougl. Lowest leaves 1-2-pinnatifid ; flowers becoming loosely panicled or 

 scattered, on slender pedicels ; corolla purplish, 2-3 times exceeding the calyx, not exserted or slightly 

 so, the lobes mostly exceeding the stamens. See page 270. 



* * * Flowers minute, very loosely panicled, on slender pedicels; corolla whitish, narrow-funnel- 

 form or subcampanulate ; stamens inserted nearly at the sinuses, shorter than the lobes ; ovules 

 many ; the close seed-coat without mucilage or spiricles. Low diffusely much-branched annuals, 

 with the radical leaves simply pinnatifld or incised. 



56. 6. LEPTOMBEiA, Gray. Obscurely glandular ; radical leaves slightly pinnatifid, the upper mostly 

 linear and entire ; flowers numerous ; corolla slender-funnelform, the tube becoming twice longer than 

 the calyx. See page 270, and Plate XXVI. 



57 G. MIORO.MBRIA, Gray. Lower leaves with oblong obtuse divaricate lobes, the upper Unear^ 

 entire ; pedicels long and capillary, scattered ; corolla oblong-campanulate, 1" long, little exceeding the 

 calyx. See page 271, and Plate XXVL 



* * * * Flowers scattered, on slender pedicels, rather large ; corolla blue or white, campanulate 

 or rotate ; anthers usually oblong ; calyx-lobes lanceolate-subulate, exceeding the tube. Low or 

 slender, diffuse. 



58. G. CAMPAJSTDLATA, Gray. Annual, 2-3' high ; lower leaves lanceolate, sparingly toothed, above 

 linear-lanceolate and sometimes entire ; corolla campanulate, moderately 5-lobed, the included stamens 

 inserted at the base. See page 271, and Plate XXVI. 



59. G. IKCISA, Benth. Annual, minutely puberuleut or glabrous, slender, 1-2^^ high, effusely pan- 

 icled; lower leaves lyrate, the upper narrower and incised or toothed, on the branchlets nearly linear 

 and entire ; pedicels filiform, rigid ; corolla rotate, almost 5-parted, the slender filaments inserted nearly 

 in the sinuses ; cells many-ovuled. — E. Texas to Mexico. 



60. G. EIGIDULA, Benth. Perennial, glabrous or viscid-glandular, diffusely branched, a span high ; 

 leaves pinnately or the upper nearly palmately parted, the lobes lanceolate, linear or slender-subulate; 

 corolla 9-16" broad, blue, rotate, 5-parted, with broad obovate lobes ; filaments slender, inserted in the 

 sinuses ; anthers linear or elongated-oblong ; cells several-ovnled. — Texas to Arizona and Mexico. 



POLEMONIUM. 



5 1. Corolla funnelform, exceeding the calyx, the tube usually elongated ; filaments barely hairy and 

 scarcely dilated at base. Viscid-glandular musk-scented dwarf perennials, with creeping root- 

 stocks and very small and numerous crowded leaflets. 



1. P. OONFEETUM, Gray. Tufted ; leaflets 3-5-cleft, segments round-oval to linear-oblong ; flowers 

 clustered, nodding, looser in fruit ; calyx-tube twice longer than the narrow-lobes ; corolla-tube exceed- 

 ing the calyx and 2-4 times longer than its own rounded lobes. See page 271. 



2. P. VISCOSUM, Nutt. More dwarf; leaflets entire, ovate or rounded, 1^" long; flowers looser, 

 subcorymbed ; calyx subcampanulate, lobes broadish, equaling the tube ; corolla-tube equaling the calyx, 

 not exceeding its own lobes. — ^N. Colorado, (Nuttall.) 



J 2. Corolla rotate-campanulate, moderately exceeding the calyx ; filaments dilated at base. Per- 

 ennials, with laxer infloresenoe ; leaflets entire, the upper often confluent. 



3. P. ciEuuLBUM, L. 1-3° high, leafy ; flowers numerous ; calyx cleft to the middle ; stamens or 

 style usually exsert ; cells 7-12-ovuled, several-seeded. See page 272. 



4. P. HUMiLB, Willd. Pubescent, mostly glandular ; stems a span high, 1-2-leaved ; flowers few, 

 subcorymbed, rather long-pedioelled ; calyx cleft beyond the middle ; cells 2-4-ovuled, 1-2-seeded. — 

 Arctic America and Alaska, and southward in the mountains to Colorado and California. 



5. P. KEPTANS, L. Nearly glabrous, not viscid, 1° high, branching, leafy ; leaflets 5-13 ; flowers few- 

 corymbed, nodding ; calyx-lobes shorter than the tube ; cells about 3-ovuled, usually l-seeded.— N. York 

 to Alabama and west to the plains. 



J 3. Corolla nearly rotate, shorter than the calyx ; filaments dilated at base, very sparingly pilose- 

 ciliate. A low annual ; leaflets entire. 



6. P. MiCRANTHTiM, Benth. Somewhat viscid-pubescent, diffusely branched, small and decumbent ; 

 leaflets 5-13 ; flowers scattered or solitary, white ; calyx deeply 5-cleft ; cells 2-3-ovuled. See page 272. 



