530 ORDER 86. SCROPHULARIACEJ3. 



3 D. quercifolia Benth. Plant glabrous and glaucous, paniculate-branched ; Iva. 

 paler beneath, petiolate, lower ample, bipinnatifid,^ upper oblong lanceolate, pin- 

 natifid or entire ; ped. as long as the calyx segm. of the cal. lance-acuminate, longer 

 than its tube. Woods and thickets, X. Eng. to G-a. and Mich., common. St. tall, 

 purplish, covered with a glaucous bloom, 3 to 5f high. Lvs. 4 to 8' long, sinuate 

 or incised. Fls. large, and of a brilliant yellow, opposite and axillary, near the 

 top of the stem, forming a loose spike. Cor. trumpet-shaped, near 2' long. Aug. 

 (G. quercifolia Ph. G. glauca Eddy.) 



4 D. pedicularia Benth. Pubescent or nearly glabrous, branched ; Ivs. ovate 

 lanceolate, pinnatifid, with toothed or incised segments ; pedicels longer than the 

 .hairy calyx, segm. tooth or incised, equaling the top-shaped calyx tube. Dry- 

 hilly woods, Can. to Ga. and Ky., common. St. bushy, very leafy, 2 to 3f high, 

 sprinkled with a woolly pubescence. Lvs. 2 to 3' long, divided like those of the 

 Louse-wort. Cor. rather bell-shaped, 15" long, the cal. 5". Aug. (G. pedicu- 

 laria L.) 



5 D. pectinata Benth. Very hirsute ; Ivs. lanceolate, pectinate-pinnatifid, segm. 

 subdentate or incised; ped. shorter than the hairy calyx, segm. toothed, longer 

 than the cal. tube. Pine woods, Car. and Ga. Fls. as large aa in the last. Jl., 

 Aug. (G. pectinata Torr.) 



29. GERAR'DIA, L. (In honor of John Gerard, an English botan- 

 ist of the 16th century.) Calyx campanulate, briefly or narrowly 

 5-toothed ; cor. tubular, ventricous or subcampanulate, tube longer than 

 the 5 broad, entire unequal lobes ; sta. didynamous, in pairs, shorter 

 than the corolla, length unequal ; caps, obtuse, or briefly acuminate ; 

 seeds oo. American herbs, rarely suffruticous. Lvs. opposite. Fls. 

 axillary, solitary, purple or rose-color. 



1. OTOPIIYLLA. Calyx segments longer than its tube, 2 anthers much smaller No. 1 



2. GKRAKDIA proper. Calyx segments short, equal. Anthers all equal. () 



Corolla bilabiate, upper lip very short, erect. Peduncles longer than corolla No. 2 



Corolla lobes subequal, all spreading, throat usually hairy, (a) 



a Leaves almost none, opposite scales instead. Flowers large No. 8 



a Leaves all alternate, filiform. Flowers large, long-stalked No. 4 



a Leaves opposite. Peduncles not longer than the calyx Nos. 5, 6 



Peduncles much longer. Flowers large (about 9" long.) Nos. 7, 8 



Flowers small (about G" long).. .Nos. 9, 10 



1 Gr. auriculata MX. Scabrous, hirsute, subsimple ; Ivs. ovate-lanceolate, mostly 

 entire, upper auriculate at base ; fls. nearly sessile. Penn. to Iowa and La., 

 in low grounds. A rough, rigid plant, 12 to 18' high. Lvs. 1' to 18" long, ses- 

 sile, the floral with an oblong lobe or/ each side at base. Cor. dilated and spread- 

 ing at mouth ; lobes entire, rounded, purple, rarely white. Short stamens similar, 

 but twice smaller. Aug., Sept. 



2 G. Mettaueri. Glabrous, slender, diffusely branched ; Ivs. linear-filiform, 

 scarcely rough-edged ; ped. filiform many times longer than the calyx which has 

 short, triangular teeth ; cor. distinctly bilabiate, upper lip very short, emarginate, 

 straight, vaulted, fringe-ciliate, lower lip of 3 broad, spreading lobes. QL) Wet 

 sandy places, Middle Fla. (Dr. Mettauer). Sts. 1 to 2f high. Lvs. 5 to 12" long. 

 Ped. 6 to 12'' long. Fls. purple, with 2 yellow stripes in the spotted tube. 



P ? CLAUSA. Cor. tube dorsally compressed, throat closed by the inficxed upper 



lip. With the others. Fls. light purple, 

 y ? NUDA. Lvs. (except a few at the base) reduced to minute bracts, scarcely 



1" long; fls. all terminal, rather smaller (5" long,) light purple. 



3 G. aplrylla Nutt. Erect, with slender branches, leafless, with few, remote, 

 scarious scales or short bristle-like Ivs ; ped: bracteolate ; cal. truncate, with 

 minute, gland-like teeth ; caps, globular, exceeding the calyx. (T) N". Car. to 

 Fla. and La. in wet places, coastward. Plant 2 to 3f high, often simple, with few 

 flowers, or diffusely few-branched with many flowers. Fls. deep purple, middle 

 size, lobes subequal, pedicels short, i. e., the bractlets are near the flowers. Jn., Jl. 



4 G. filifolia Nutt. St. terete, diffusely branched; Ivs. filiform, terete, alternate 

 and much fascicled ; ped. alternate, much longer than the Ivs. ; cal. teeth short, 

 setaceously acute; cor. ample, smooth. Q St. Mary's, Ga. to Apalachicola, Fla. 



