Zizania palustris var. interior

(Fassett) Dore
Common names: Interior wildrice
Endemic
Synonyms: Zizania interior Zizania aquatica var. interior
Treatment appears in FNA Volume 24. Treatment on page 50.
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Illustrator: Sandy Long

Copyright: Utah State University

Plants 1-3 m. Blades 10-40+ mm wide. Pistillate part of inflorescences 10-40+ cm wide; branches ascending to widely divergent; lower pistillate branches with 9-30 spikelets.

Distribution

Ohio, N.Dak., Calif., Minn., Mich., Ala., Wis., S.Dak., Tenn., Iowa, Kans., Nebr., Ill., Ind., Mo., Ky., Man., N.B., N.S., Ont., P.E.I., Que., Sask.

Discussion

Zizania palustris var. interior grows on muddy shores and in shallow water, mainly in the north central United States and adjacent Canada. It resembles Z. aquatica in its vegetative characters, and Z. palustris var. palustris in its pistillate spikelets. Crossing experiments (Duvall and Biesboer 1988) suggest that hybridization between the two may occur. Isozyme data (Warwick and Aiken 1986) do not support the hypothesis that Z. palustris var. interior is a hybrid.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

narrowed +
Edward E. Terrell +
(Fassett) Dore +
1 (?) +  and 3 (?) +
scabridulous +
slender +
0 cm0 mm <br />0 m <br /> (10 cm100 mm <br />0.1 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
20 cm200 mm <br />0.2 m <br /> (60 cm600 mm <br />0.6 m <br />) +
not evident +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
pistillate +  and staminate +
spikelike +
Interior wildrice +
aerenchymatous +
20 cm200 mm <br />0.2 m <br /> (500 cm5,000 mm <br />5 m <br />) +
0 cm0 mm <br />0 m <br /> (300 cm3,000 mm <br />3 m <br />) +
Ohio +, N.Dak. +, Calif. +, Minn. +, Mich. +, Ala. +, Wis. +, S.Dak. +, Tenn. +, Iowa +, Kans. +, Nebr. +, Ill. +, Ind. +, Mo. +, Ky. +, Man. +, N.B. +, N.S. +, Ont. +, P.E.I. +, Que. +  and Sask. +
0 +  and 1/3 +
capillary +
sometimes longer +
sterile +, fertile +, sexual +, unisexual +  and bisexual +
round +  and compressed +
cylindrical +, oblong +  and ovoid +
subtending +
reduced +
uncinate +
solid +  and hollow +
aerenchymatous +
distributed +
coriaceous +, chartaceous +  and membranous +
0.6mm +  and 2.6mm +
0.3 cm3 mm <br />0.003 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
scarious +  and membranous +
annular +
inconspicuous +
scabrous +  and glabrate +
complex +  and simple +
concealed +  and prominent +
2 +  and 1 +
well-developed +
1-keeled +
membranous +
0.6mm +  and 2.6mm +
24cm +  and 60cm +
1 cm10 mm <br />0.01 m <br /> (20 cm200 mm <br />0.2 m <br />) +
dry +  and fleshy +
not prolonged +
with scattered hairs +  and glabrous +
not inflated +
pistillate +  and staminate +
0.8 cm8 mm <br />0.008 m <br /> (3.3 cm33 mm <br />0.033 m <br />) +
with lines +  and glabrous +
9 +  and 30 +
oblong +, lanceolate +, awned +  and acuminate +
0.6 cm6 mm <br />0.006 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
1mm +  and 2.6mm +
1 +  and 3 +
simple +  and compound +
2 (?) +  and 3 (?) +
triangular +  and dome--shaped +
Zizania interior +  and Zizania aquatica var. interior +
Zizania palustris var. interior +
Zizania palustris +
variety +
membranous +
stoloniferous +, rhizomatous +  and rooted +