526 Obdee 86.— SCEOPHULAEIACE;^. 



22. SYNTHY'RIS, Benth. (Gr. avv, together, 6vpi^, 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. — li N. American, with a 

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

 stem, alternate. Fls. racemed or spicate. 



S. Houghtoniana Benth. Hirsute, radical Ivs. ovate, suboordate at base, erenu- 

 late, obtuse ; scape erect, clothed with foliaeeous 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 IJ to 2', on petioles about an inch 

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

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



23. DIGITA^LIS, L. Fox-glove. (Lat. digitahulum, a thimble.) 

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

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

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

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

 showy racemes. Poisonous and medicinal. 



g CovoUa tube subglobons, Bcarcely longer tlian the lower lip Nos. jk 2, 7 



I Corolla tube campanultite, twice longer tbaii the lower lip Nos. 3, 4, 6 



§ Corolla tube Bubcylindric, t^ice louger tbau the lower lip Mo. 5 



1 D. orieutalia Lam. St. and lance-linear lvs. glabrous ; spike interrupted, 

 glandular-villous ; pedicels very short ; cal. segments ovcde-lanceolate, acute ; cor. 

 pubescent, lower segments oblong, obtuse. — If Bythinia. Height 3f. Corolla 

 purplish, spotted. 



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

 segments oval-eUiptical, obtuse ; cor. limb subglobous, woolly, lower segment ovate. 

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

 longest, densely bearded, f 



3 D. purpurea L. Lvs. oblong, rugous, petiolate, eremite; 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 lvs. Fls. numerous, in a long, simplo spike, 

 large, crimson, often white, with eye-hke spots within. Jl. j^ f Eur. 



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

 amplexicavl ; 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 1-J-' long, yellow, varying to brown- 

 ish or orange, -j- 



5 D. lutea L. Tery smooth ; lvs. oblong or lanceolate, denticulate ; rac. 

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

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

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



6 D. Th^psi, with mullein-like lvs. all radical and flat on the ground. 



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

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

 difficult of course, to determine. 



24. VEROK'ICA, L. Speedwell. (Perhaps namea for /Si. Verorma.) 

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

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

 sule compressed, 2-sulcate, often obcordato, 2-celled, few-seeded. — 

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

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



Tall, erect (IS' to 4f ). Fls. in dense, terminal spikes. Corolla tube elongated Nos. 1, IS 



Low, weak (3 to 120. ieavos opposite (at base). Corolla tube very short, (a) 



