This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol3", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
Perennial; stout, glabrous, 1°-2° high, simple leafy. Leaves ovate to lanceolate, 3-7-nerved, acu minate at the apex, narrowed or sometimes rounded at the base, 2'-4' long, rough-margined, the lowest oblong or obovate, smaller; flowers 1'-1 1/2' high in a terminal sessile cluster and commonly 1 or 2 in the upper axils, 2-bracteolate under the calyx calyx-lobes lanceolate or ovate, ciliolate, usually spreading; corolla oblong, club-shaped, blue, 0r occasionally white, nearly or quite closed, its lobes obsolete, the intervening appendages very broad light colored, opposite the stamens; anthers coher ing in a tube; capsule stipitate; seeds oblong winged.
In moist soil, Quebec to Manitoba, Georgia and Ne braska. Cloistered-heart. Bottle- or barrel-gentian Aug.-Oct.
Perennial; stem stout, terete, glabrous, simple, erect or ascending, 1°-3° high. Leaves ovate-lanceolate or oblong-lanceolate, smooth-margined, acuminate at the apex, subcordate. clasping or rounded at the base, 2'-5 long, 1'-2'wide; flowers several or numerous in a sessile terminal cluster and sometimes 1 or 2 in the upper axils, 1 1/2-2' high, 2-bracteolate under the calyx; calyx-lobes ovate, acute, smooth or minutely rough-margined, shorter than the tube, at length spreading; corolla campanulate-funnelform, open, greenish or yellowish white, its lobes ovate, acute or obtuse, twice as long as the erose-denticulate appendages; anthers cohering in a tube; capsule stipitate; seeds winged.
In moist soil, Ontario to Minnesota, Missouri, Virginia and Kentucky. Aug.-Oct.
Gentiana linearis Froel. Gent. 37. 1796.
Gentiana Saponaria var. linearis Griseb. in Hook. Fl.
Bor. Am. 2: 55. 1834. Gentiana rubricaulis Schwein. in Keating's Narr.
Long's Exp. 2: 384. 1824. Gentiana linearis var. lanceolata A. Gray, Syn. Fl. 2:
Part 1, 123. 1878.
Perennial; glabrous throughout; stem slender, terete, simple, 6'-2° high, leafy. Leaves linear or linear-lanceolate, smooth-margined, acute at both ends, 3-nerved, 1 1/2'-3' long, 2"-5" wide; flowers 1'-1 3/4 high in a terminal cluster of 1-5 and sometimes also in the upper axils; calyx-lobes linear or lanceolate, shorter than the tube; corolla erect, blue, oblong-funnelform, open, its lobes erect, rounded, 1"-2" long, slightly longer than the entire or 1-2-toothed appendages; anthers coherent in a tube, or at length distinct; capsule stipitate; seeds winged.
In bogs and on mountains, New Brunswick and Ontario to Maryland and Minnesota. Ascends to 5000 ft. in the Adirondacks. Aug.-Sept.