128 PENTANDR1A.— DIGYNIA. 



2: G. ockroleuca : stem subangular; leaves ovate- 

 lanceolate ; flowers in terminal subsessile fasci- 

 cles ; segments of the calyx linear-lanceolate ; 

 corolla campanulate-ventricose, 10-cleft ; seg- 

 ments acute, slightly connivent ; interior ones sub- 

 dentate, short. 



HAB. Fields and woods. Sept. U- Stem 1 ft. high, 

 subside. ; fl. large, yellowish-white. 

 3. G. Pneumonanthe : stem terete ; leaves linear-lanceo- 

 late, obtuse ; flowers few, terminal, (and axillary,) 

 subsessile ; segments of the calyx linear-oblong, 

 rather acute; corolla campanulate,5-cleft; segment* 

 acute ; interior plaits short, 1 -toothed. 



HAB. High mountains. U- Stem a foot high, very 

 smooth; fl. large, bright blue. 

 i. G. angustifolia : stem simple, slender, 1 -flowered; 

 leaves linear, spreading ; corolla infundibuliform, 

 5-cleft, with 5 interior lacerate segments. 



HAB. Sandy fields. Oct.— Nov. U. Stem 1 ft. high, 

 slend. ; leav. long ; fl. 2 in. long, azure-blue. 

 ~S. G. linearis : stem somewhat scabrous ; leaves linear- 

 lanceolate, undulate, ciliate, as are also the segments 

 of the calyx ; flowers sessile, in terminal crowded 

 fascicles ; corolla campanulate, 5-cleft ; segments 

 obtuse, with the interior folds denticulate. 



HAB. Mountains. U. Fl. middle-sized, blue ; seg. of 

 the cor. very short. 

 3. G. quinqueflora : stem quadrangular, branched ; 

 leaves ovate-lanceolate, acute, 3-nerved ; flower* 

 somewhat in fives, terminal and axillary, pedicellate; 

 corolla tubular-campanulate, 5-cleft ; segments se- 

 taceously acuminate ; calyx very short. 



HAB. Woods and hillsides. Sept. — Oct. £. Stem I 

 ft. high, rarely simp. ; fl. small, pale blue. 

 7. G. crinita : stem terete ; branches elongated, 1- 

 flowered ; leaves lanceolate, acute ; corolla half 

 4-cIeft ; segments incisely ciliate. 



HAB. Wet meadows. Oct.— Nov. $. Stem Win . 

 high, quadrang. above; fl. very large, blue. 



193. CUSCUTA. Dodder. Convolvuli. 



1. C. americana : flowers pedunculate, umbellate, j 

 cleft ; stigmas capitate ; corolla tubular-campanulate 

 with the border small and spreading. 



