Isoëtes nuttallii
Amer. Naturalist 8: 215. 1874.
Common names: Nuttall's quillwort
Synonyms: Isoëtes suksdorfii Baker
Treatment appears in FNA Volume 2.
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.
... more about "Isoëtes nuttallii"
separating +
Nuttall's quillwort +
alternating +
vascular +
surrounding +
vascular +
obscure +
several +
Present +
septate +
longitudinal +
simple +
arranged +
straight +
deciduous +
brittle +
recurved;erect;spreading +
surrounding +
tapering +
rigid +
deltate;cordiform +
membranous +
exposed +
endosporic +
trilete +
white +
lustrous +
globose +
9-celled +
monolete +
brown +
papillose +
reniform +
textured +
brownish +
several +
fibrous +
hardened +
converging +
Amer. Naturalist +
1874 +
arising +
cormlike +
brown +
proliferous +
black +
several +
hardened +
multitailed +
unpigmented +
Isoëtes nuttallii +
Isoëtes +
species +
brown-streaked;completely brown +
terrestrial +
heterosporous +