526 Ordeb 86.— SCROPHULARIACE^. 



22. SYNTHY'RIS, Benth. (Gr. avv, together, Ovpiq, a door; 8c. 

 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. — 7i N. American, with a 

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

 stem, alternate. FIs. racemed or spicate. 



S. Houghtonidna Benth. Hirsute, radical Ivs. ovate, subcordate at base, orenu- 

 lato, obtus9 ; 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 IJ to 2', on petioles about an inch 

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

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



23. DIGITA'LIS, L. Fox-glovk. (Lat. digitahulum, a thimble.) 

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

 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. FIs. in 

 showy racemes. Poisonous and medicinal. 



S Corolla tube subglobous, scnrccly loiicrer than the lower lip Nos. 1. 2, 1 



§ Corolla tube campanulate, twice longer tlian tlie lower lip Nos. 3, 4, 6 



§ Corolla tube subcyliudric, twice longer than the lower lip No. 5 



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

 glandular- villous ; pedicels very short ; cat segments ovate-lanceolate, acute ; cor. 

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

 purplish, spotted. 



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

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

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

 longest, densely bearded f 



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

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

 high, with large, rough, downy Iva. FIs. numerous, in a long, simple spike, 

 large, crimson, often white, with eye-like spots within. Jl. :j: | Eur. 



4 D. grandiflora Allioni. Lvs. ovate or oblong-lanceolate, veimj, serrulaie, 

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

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

 i( in Europe. Plant 2 — 3f high. Flowers 1|' long, yellow, varying to brown- 

 ish or orange, f 



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

 seouiid, many-flowered ; cal. segments lanceolate, acute; cor. ghabrou?, tube eub- 

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

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



6 D. Thdpsi, with mullein-hke lvs. all radical and flat on the ground. 



7 D. leucoph^a, with very large, dense, leafy racemes of dusky whito fls., 

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

 difficult of course, to determine. 



24. VERON'ICA, L. Speedwell. (Perhaps namea for jS'i. Veronica.) 

 Calyx 4-pai'tod ; corolla subrotate, deeply 4-clcft, lower segments mostly 

 narrow ; stamens 2, inserted into the tube, exserted ; sterile 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 racemes, blue, flesh-colored or white. 



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



Low, weak (3 to ] 20- Leaves opposite (at base). Corolla tube very sJlort. (a) 



