526 OEDEB 86. SCROPHULARIACE^E. 



22. SYNTHHTRIS, Benth. (Gr. ovv, together, Ovpig, a door; sc. 

 valves closed.) Calyx 4-parted ; corolla subcampanulate, segments 4, 

 erect-speading or ; stamens 2, inserted into the tube of the corolla, 

 exserted ; anther cells parallel, distinct ; capsule compressed, obtuse or 

 emarginate, loculicidal, seeds plano-convex. 2 N. American, with a 

 thick root. Radical Ivs. petiolate, caulirie bract- like, on the scape-like 

 stem, alternate. Fls. racemed or spicate. 



S. Houghtoniana Benth. Hirsute, radical Ivs. ovate, subcordate at base, crenu- 

 late, obtuse ; scape erect, clothed with foliaceous bracts, dense-flowered above ; 

 cor. as long as the calyx, upper segment longer than the other very short ones. 

 Dry hills, Wis. (Lapham). Lvs. 2 to 3' by 1J to 2', on petioles about an inch 

 loug, some of the leaves often suborbicular. Bracts much smaller, ovate and 

 ovate-lanceolate, clasping. Scapo 9 to 12' high. Spiko elongated in fruit. 



23. DIGITALIS, L. FOX-GLOVE. (Lat. digitabulum, a thimble.) 

 Calyx 5-parted ; corolla campanulate, ventricous, upper lip rcflexed, 

 spreading, middle segment of the lower lip broadest ; capsule ovate, 2- 

 cclled, 2-valved, with a double dissepiment. Herbs or shrubs of Europe 

 and Asia. Lower Ivs. crowded, petiolate, upper alternate. Fls. in 

 showy racemes. Poisonous and medicinal. 



Corolla tnbo subglobons, scarcely longer than the lower lip Xos. 1, 2, 7 



Corolla tube campanukite, \ wico longer than the lower lip Nos. 3, 4, G 



Corolla tube subcylindric, twice longer tbuu thw lower lip JNo. 5 



1 D. orientalis Lam. St. and lance-linear Ivs. glabrous ; spike interrupted, 

 glanuular-villous pedicels very short ; cal. segments ovate-lanceolate, acute ; cor. 

 pubescent, lower segments oblong, obtuse. If By thin ia. Height 3f. Corolla 

 purplish, spotted. 



2 D. ferruginea. Lvs. oblong-lanceolate, very smooth ; rac. many-flowered; cat. 

 segments ovql- elliptical, obtuse; cor. limb subglobous, woolly, lower segment ovate. 

 i| in Greece, Armenia and Circassia. Corolla rust-colored, 16" long, lower lip 

 longest, densely bearded, f 



3 D. purpurea L. Lvs. oblong, rugous, petiolate, crenate; cal. segm. ovate ob- 

 long ; cor. obtuse, upper lip entire ; ped. as long as the calyx. Plant 2 to 3f 

 high, with large, rough, downy Ivs. Fls. numerous, in a long, simple spike, 

 large, crimson, often white, with eye-like spots within. Jl. \ f Eur. 



4 D. graiidiflora Allioni. Lvs. ovate or oblong-lanceolate, veiny, serrulate, 

 ampkxicaul ; rac. tomentous, lax ; cal. segments lanceolate, acute ; cor. ventricous- 

 campanulate, segments broader than long, lowest twice broader than the lateral. 

 If in Europe. Plant 2 3f high. Flowers !' long, yellow, varying to brown- 

 ish or orange, f 



5 D. hitea L. Very smooth ; Ivs. oblong or lanceolate, denticulate ; rac. 

 eecui id, many-flowered ; cal. segments lanceolate, acute; cor. glabrous, tube sub- 

 ventricous, lower segment half as long again as the rest. TJ. Europe. Stem 

 3f high. Flowers 8 10" long, yellow, varying to white, f 



6 D. Thapsi, with mullein-like Ivs. all radical and flat on the ground. 



7 D. leucophsea, with very largo, dense, leafy racemes of dusky white fls. f 

 and a few other species may bo found in gardens. There are also many hybrids, 

 difficult of course, to determine. 



24. VERON'ICA, L. SPEEDWELL. (Perhaps namea for St. Veronica?) 

 Calyx 4-parted ; corolla subrotate, deeply 4-cleft, lower segments mostly 

 narrow; stamens 2, inserted into the tube,. exserted ; sterjlc fil. ; cap- 

 sule compressed, 2-sulcate, often obcordate, 2-celled, few-seeded. 

 Herbs or shrubs (the following species herbs). Lvs. opposite. Fls. sol- 

 itary, axillary or in racjcmes, blue, flesh-colored or white. 



Tall, erect (IS' to 4f ). Fls. In dense, terminal spikes. Corolla tube elon-atecl Nos. 1, 13 



Low, weak (8 to 12'). Leaves opposite (at base). Corolla tube very short, (a) 



