^04 XCI. SCROPHULARIACEiE. Digitalis. 



H. MicRANTHEMoiDES. Nutt. (Herpestis micrantha. Ell.) 



Inundated banks, Del,, Nuttall. Stems a few inches in length, dichoto- 



mously branched. Leaves roundish-ovate, opposite, crowded, sessile, obscurely 



3-veined. Flowers axillary, solitary, minute. Aug. Sept. 



Tribe 6. SIBTHORPEiE. 



16. LIMOSELLA. 



Lat. liymts, mud ; the plant grows by the edge of puddles and muddy places. 



Calyx 5-cleft ; corolla shortly campanulate, 5-cleft, equal ; stamens 

 approximating in pairs ; capsule partly 2-celledj 2-valved, many- 

 seeded. — Minute^ aquatic herbs. Scape l-Jiowered. 



L. TENUiFOLiA. Nutt. (L. subulata. Ives and 1st edit.) Mudwort. 

 Acaulescent ; Ivs. linear, scarcely distinct from the petiole ; scape as long 

 as the leaves ; cor. segments oval-oblong, shorter than the calyx. — (l) R. I. ! 

 Mass. ! N. Y., Penn. A minute plant, an inch in height, growing on the 

 muddy banks of rivers. Leaves and flower-stalks radical. Flowers very small, 

 blue and white. Aug. 



Tribe 7. DIGITALEJE. 



Inflorescence centripetal, racemose. Leaves all alternate, the lower crowded, 

 petiolate. Benth. 

 17. SYNTHYRIS. Benth. 

 Calyx 4-parted ; cor. subcampanulate, segments 4, erect-spreading 

 or ; sta. 2, inserted into the tube of the corolla, exserted ; anth. 

 cells parallel, distinct; caps, compressed, obtuse or emarginate, locu- 

 licidal, seeds plano-convex. — %■ N. American^ with a thick root. Radi- 

 cal Ivs. petiolate, cauline bract-like.^ on the scape-like stem, alternate. Fls. 

 racemed or spicate. 



S. HouGHTONiANA. Beuth. (Gymnandra Houghtoniana. Torr. df- Gray, 

 in edit.) — Hirsute ; radical Ivs. ovate, subcordate at base, crenulate, 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., Lapkam! Leaves 2 — 3' by 1| — 2', on petioles about I' long, some of the 

 leaves often suborbicular. Bracts much smaller, ovate and ovate-lanceolate, 

 clasping. Scape 9—12' high. Spike elongating in fruit. 



18. DIGITALIS. 

 Lat. digitabulum, a thimble ; from the form of the flowers. 



Calyx 5-parted; corolla campanulate, ventricose, in 5 subequal 

 lobes ; capsule ovate, 2-celled, 2-valved, with a double dissepiment. — 

 Herbs or shrubs of Europe and Asia. Lower Ivs. crowded, petiolate, 

 upper alternate. Fls. in showy racemes. 



1. D. PURPUREA. Purple Foxglove. — Lvs. oblong, rugose, crenate ; cal. seg- 

 merits ovate-oblong; cor. obtuse, upper lip entire ; ped. as long as the calyx. — 

 Native of Europe. A well kno\\Ti, showy border flower of easy culture. It is 

 a biennial plant 2 — 3f high, with large, rough, downy leaves. Flowers nume- 

 rous, in a long, simple spike, large, crimson, often white, with beautiful eye- 

 like spots within. The whole plant is a violent and dangerous poison when 

 taken in considerable quantities, producing delirium, convulsions and death. 

 But in the hand of the judicious physician it becomes a valuable medicine, act- 

 ing as a sedative and diuretic. July, ij: f 



2. D. FERRUGiNEA. IroTi-colored Foxglovc. — i>y5. oblong-lanceolate, very smooth; 

 roc. many-flowered ; cal. segments oval-elliptical, obtuse ; cor. limb subglobose, 

 woolly, lower segment ovate. — % in Greece, Armenia and Circassia. Corolla ■ 

 rust-colored, 16" long, lower lip longest, denselv bearded, f 



