Aquatic and Wetland Vascular Plants of the Northern Great Plains
25. Saxifragaceae, the Saxifrage Family
2. Parnassia L. -- Grass-of-Parnassus1. Parnassia glauca Raf.
Plants with scapes 1-4 dm tall. Leaf blades rotund-ovate to ovate, 2-7 cm long, 1-5 cm wide, somewhat coriaceous, rounded to subacute at the tip, rounded to truncate or subcordate at the base, decurrent on the upper part of the petiole; bract-leaf usually present, clasping or not. Sepals oblong to oval, 2.5-5.5 mm long, herbaceous with a narrow hyaline margin, 3- to 7-nerved, rounded; petals oblong to oval, 9-18 mm long, 7- to 9-nerved; staminodes 3-parted from below the middle, shorter than to slightly exceeding the stamens. Jul--Sep. Calcareous fens and wet meadows; uncommon in e and c ND and e SD; (Que. and N.B. to Sask., s to VA, IN, IA and SD).
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