Difference between revisions of "Isoëtes nuttallii"
Amer. Naturalist 8: 215. 1874.
Common names: Nuttall's quillwort
Synonyms: Isoëtes suksdorfii Baker
Treatment appears in FNA Volume 2.
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|name=Isoëtes suksdorfii | |name=Isoëtes suksdorfii | ||
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name=Isoëtes nuttallii | name=Isoëtes nuttallii | ||
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|parent rank=genus | |parent rank=genus | ||
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|genus=Isoëtes | |genus=Isoëtes | ||
|species=Isoëtes nuttallii | |species=Isoëtes nuttallii | ||
Latest revision as of 20:22, 5 November 2020
Plants terrestrial or becoming so. Rootstock nearly globose, 2(–3)-lobed. Leaves deciduous, dull green to gray-green or yellow-green, pale toward base, spirally arranged, to 20 cm, ± rigid, gradually tapering to tip, often surrounded at base by several black scales to ca. 5 mm, spirally arranged, rigid, almost brittle. Velum covering entire sporangium. Sporangium wall unpigmented. Megaspores white, 360–600 μm diam., lustrous, ± smooth to tuberculate; girdle obscure. Microspores brown in mass, 20–30 μm, papillose. 2n = 22.
Phenology: Spores mature in late spring–early summer.
Habitat: Seasonally wet soil, temporary streams
Elevation: mostly 0–1500 m
Distribution
B.C., Calif., Oreg., Wash.
Discussion
Selected References
None.
Lower Taxa
None.