Lithospermum denticulatum, Lehm. (Pulmonaria Sibirica, Pursh. nec. Lin.) Stylus in nostris inclusus nec exsertus, reliqua congruunt. Limbus longitudine est tubi, qui Lithospermo pulchro est brevior.
Batschia longiflora, Pers.—B. canescens, Michx. (Anchuso Virginica, Lin.)
Both plants contain in the bark of their roots the same red dye as the officinal roots of the Alcanna tinctoria.
Pulmonaria Virginica, L.
RHINANTHACEÆ
Pentstemon grandiflorum, Nutt. (P. Bradburnii, Pursh.) Stamen sterile fert antheram parvam bilobam.
Pentstemon cristatum, Nutt. (P. erianthera, Pursh.)
Pentstemon viscidulum, N. ab. E. herbaceus, subtillissime subsquamuloso-pubescens, foliis lanceolatis amplexicaulibus inferioribus denticulatis, pedunculis fasciculatis, folia superiora superantibus, calycibus acuminatis corollisque glanduloso-pubescentibus fauce imberbi, filamento sterili ab apice ad medium aureo-barbato.
This plant is near to Pentstemon erianthera, but differs from that, and from the other species with which I am acquainted, by the glutinous pubescence of the flowers. These are wide, infundibuliform, and seem to have been of a dark red colour. My specimen is about a span high. This species has, perhaps, been already described among species of Pentstemon recently made known; I have not, however, been able to find any corresponding with it where I looked for it.
Pentstemon lævigatum, Nutt.