Sagittaria latifolia

Willdenow

Sp. Pl. 4(1): 409. 1805.

Common names: Wapato common arrowhead duck-potato sagittaire latifoliee
Illustrated
Synonyms: Sagittaria latifolia var. obtusa (Muhlenberg) Wiegand Sagittaria latifolia var. pubescens (Engelmann) J. G. Smith Sagittaria ornithorhyncha Muhlenberg Sagittaria planipes C. Mohr Sagittaria pubescens Sagittaria viscosa
Treatment appears in FNA Volume 22.

Herbs, perennial, to 45 cm; rhizomes absent; stolons present; corms present. Leaves emersed; petiole triangular, erect to ascending, 6.5–51 cm; blade sagittate, rarely hastate, 1.5–30.5 × 2–17 cm, basal lobes equal to or less than remainder of blade. Inflorescences racemes, rarely panicles, of 3–9 whorls, emersed, 4.5–28.5 × 4–23 cm; peduncles 10–59 cm; bracts connate more than or equal to ¼ total length, elliptic to lanceolate, 3–8 mm, delicate, not papillose; fruiting pedicels spreading, cylindric, 0.5–3.5 cm. Flowers to 4 cm diam.; sepals recurved to spreading, not enclosing flower or fruiting head; filaments cylindric, longer than anthers, glabrous; pistillate pedicellate, without ring of sterile stamens. Fruiting heads 1–1.7 cm diam; achenes oblanceoloid, without abaxial keel, 2.5–3.5 × to 2 mm, beaked; faces not tuberculate, wings absent, glands (0–) 1 (–2); beak lateral, horizontal, 1–2 mm. 2n = 22.


Phenology: Flowering summer–fall.
Habitat: Wet ditches, pools, and margins of streams and lakes
Elevation: 0–1500 m

Distribution

V22 256-distribution-map.jpg

Alta., B.C., Man., N.B., N.S., Ont., P.E.I., Que., Sask., Ala., Ark., Calif., Colo., Conn., Del., D.C., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Nebr., N.H., N.J., N.Y., N.C., N.Dak., Ohio, Okla., Pa., R.I., S.C., S.Dak., Tenn., Tex., Vt., Va., W.Va., Wis., c, s Mexico, Central America (Guatemala), South America (Colombia), South America (Ecuador), South America (Venezuela)

Discussion

Sagittaria latifolia has been divided into numerous species and varieties. It was divided into two varieties, based upon the presence of pubescence over the entire vegetative plant (C. Bogin 1955; K. Rataj 1972). We have examined numerous specimens and found that many from the southeastern United States are pubescent; we believe that this character alone is insufficient for recognition of the varieties.

Selected References

None.

Lower Taxa

None.
... more about "Sagittaria latifolia"
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
oblanceoloid +
papillose +  and smooth +
Obtuse (?) +  and Acute (?) +
Robert R. Haynes +  and C. Barre Hellquist +
Willdenow +
attenuate;hastate or sagittate +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (30.5 cm305 mm <br />0.305 m <br />) +
hastate +  and sagittate +
2cm +  and 17cm +
not papillose +
cylindric +, elliptic +  and lanceolate +
equal to ¼ total length +  and more than +
Wapato +, common arrowhead +, duck-potato +  and sagittaire latifoliee +
Alta. +, B.C. +, Man. +, N.B. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Ala. +, Ark. +, Calif. +, Colo. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, Nebr. +, N.H. +, N.J. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Okla. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Tex. +, Vt. +, Va. +, W.Va. +, Wis. +, c +, s Mexico +, Central America (Guatemala) +, South America (Colombia) +, South America (Ecuador) +  and South America (Venezuela) +
0–1500 m +
u--shaped +
not tuberculate +
1 cm10 mm <br />0.01 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
cylindric +
pistillate +, staminate +, sessile +  and pedicellate +
0 cm0 mm <br />0 m <br /> (4 cm40 mm <br />0.04 m <br />) +
hypogynous +
not +, keeled +  and compressed +
Wet ditches, pools, and margins of streams and lakes +
decumbent +  and floating +
4.5 cm45 mm <br />0.045 m <br /> (28.5 cm285 mm <br />0.285 m <br />) +
4 cm40 mm <br />0.04 m <br /> (23 cm230 mm <br />0.23 m <br />) +
petiolate +  and sessile +
decumbent +  and floating +
submersed +, floating +  and emersed +
ascending +  and recurved +
10 cm100 mm <br />0.1 m <br /> (59 cm590 mm <br />0.59 m <br />) +
deciduous +
erect;ascending +
triangular +
6.5 cm65 mm <br />0.065 m <br /> (51 cm510 mm <br />0.51 m <br />) +
Flowering summer–fall. +
not radiating +  and arranged +
decumbent +  and floating +
persistent +
recurved;spreading +
sculptured +
herbaceous;leathery +
Illustrated +
Sagittaria latifolia var. obtusa +, Sagittaria latifolia var. pubescens +, Sagittaria ornithorhyncha +, Sagittaria planipes +, Sagittaria pubescens +  and Sagittaria viscosa +
Sagittaria latifolia +
Sagittaria +
species +
white;brown +
emersed +  and submersed +
glabrous +  and sparsely pubescent +
bracteolate +  and branching +