An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian . 15. Pentstemon angustifolius Beard-tongue. Fig. 3769. P. angustifolius Pursh, Fl. Am. Sept. 738. coeruleus Xutt. Gen. 2: 52. 1818. Glabrous and glaucous; stem slender, erect,leafy, 6-i5 high. Leaves all linear or linear-lanceolate, entire, the lower narrowed intopetioles, obtusish at tiie apex, the upper ses-sile, acute, i¥-2i long, ii-2 wide; t
An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian . 15. Pentstemon angustifolius Beard-tongue. Fig. 3769. P. angustifolius Pursh, Fl. Am. Sept. 738. coeruleus Xutt. Gen. 2: 52. 1818. Glabrous and glaucous; stem slender, erect,leafy, 6-i5 high. Leaves all linear or linear-lanceolate, entire, the lower narrowed intopetioles, obtusish at tiie apex, the upper ses-sile, acute, i¥-2i long, ii-2 wide; thyrsusnarrow, spike-like, mostly dense; bracts lan-ceolate, acuminate; pedicels very short; ca-lyx-segments linear-lanceolate, acuminate,2-3 long; corolla blue, or nearh^ long, the tube gradually enlarged, thelimb somewhat 2-lipped; sterile filamentbearded at the summit. In dry soil, western Nebraska to North Da-kota and Montana. May-July. 16. Pentstemon Haydeni S. Wats. Hay-dens Beard-tongue. Fig. 3770. P. Haydeni S. Wats. Bot. Gaz. 16: 311. 1891. Glabrous, not at all glaucous or slightly so;stem decumbent, simple or branched, leafy, l°-2°high. Leaves linear or elongated-lanceolate, en-tire, sessil
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
