Imported into England and flowered by W. Thompson, of Ipswich. He writes of it as follows: "' Pentstemon Palmerii' of Asa Gray is a well marked species, allied to P. cobaea and P. Jamesii. It crows 4 feet high or more, developing secondary shoots from the base of the main stem. One does not often see so distinct a species, some of its more striking features being the dilated corolla, the elongated lobes of the lower Up, and the bearded sterile filament. The foliage, moreover, is bold in character and very glaucous, the stem leaves, especially those of the main stem, being strikingly connate."

The Florist also says of it: "The flowers are rather more than an inch long, the tube remarkably inflated above, and contracted just at the base, where it is set into the short, inconspicuous calyx. The color is a pale rosy lilac, with a purple stripe running down each of the lobes of the remarkably elongated and defiexed lower lip, while the upper lip is projected forwards and merely revolute at the edge. This novelty is very ornamental in character, as well as perfectly distinct, and will be welcomed in every garden where hardy perennials are cared for. It comes from the Sierra Nevada in California, at an elevation of 5000 to 6000 feet."