Aquatic and Wetland Vascular Plants of the Northern Great Plains
35. Gentianaceae, the Gentian Family
1. Gentiana L. -- Gentian2. Gentiana andrewsii Griseb. -- Closed gentian
Stems erect, single or few together, 1.5-6 dm tall, simple, glabrous. Leaves lanceolate to broadly elliptic-lanceolate, 4-9 cm long, 0.6-3 cm wide, smooth, acute at the tip, rounded to acute at the base. Flowers (1) few to many, clustered in upper leaf axils, 2.5-4.5 cm long; calyx tube obconic, 10-14 mm long, the lobes unequal, variable in shape, mostly lanceolate to ovate-lanceolate, less than 1/2 to as long as the tube; corolla tubular, remaining closed, the lobes low and indistinct, rounded, continuous with and slightly shorter than to about equaling the erose-margined, plicate membrane; anthers fused around the ovary at anthesis. Seeds as in the preceding except larger, 1.5-2 mm long. Aug--Sep. Wet meadows, low prairie and ditches; uncommon in the e part, rare in the c and w parts; (Que. to Man., s to NJ, NC, OH, MO and NE).
 Gentiana andrewsii. |
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