Sagittaria graminea

Michaux

Flora Boreali-Americana 2: 190. 1803.

Common names: Sagittaire a feuilles de graminees
Weedy
Treatment appears in FNA Volume 22.

Herbs, perennial, to 100 cm; rhizomes coarse; stolons absent; corms absent. Leaves submersed or emersed; submersed leaves phyllodial, angled abaxially, flattened adaxially, 6.4–35 × 0.5–4 cm; emersed with petiole triangular, 6.5–17 cm, blade linear to linear-oblanceolate, 2.5–17.4 × 0.2–4 cm. Inflorescences racemes or panicles, of 1–12 whorls, emersed, 2.5–21 × 1–8 cm; peduncles 6.5–29.7 cm; bracts connate more than to equal to ¼ total length, broadly subulate to lanceolate, 20–50 mm, coarse, not papillose; fruiting pedicels spreading, cylindric, 0.5–5 cm. Flowers to 2.3 cm diam.; sepals recurved to spreading, not enclosing flower; filaments dilated, shorter than anthers, pubescent; pistillate flowers pedicellate, without ring of sterile stamens. Fruiting heads 0.6–1.5 cm diam.; achenes oblanceoloid, without abaxial keel, 1.5–2.8 × 1.1–1.5 mm, beaked; faces not tuberculate, abaxial wings 0–1, entire, glands 1–2; beak lateral, erect, 0.2 mm.

Distribution

V22 296-distribution-map.jpg

N.B., N.S., Nfld. and Labr. (Nfld.), Ont., P.E.I., Que., Ala., Ark., Conn., Del., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Mass., Md., Mich., Minn., Miss., Mo., N.C., N.H., N.J., N.Y., Nebr., Ohio, Okla., Pa., R.I., S.C., S.Dak., Tenn., Tex., Va., Vt., W.Va., Wash., Wis., West Indies (Cuba)

Discussion

Seven varieties of Sagittaria graminea have been recognized, i.e., var. graminea, var. platyphylla Engelmann, var. teres (S. Watson) Bogin, var. weatherbiana Fernald, var. cristata (Engelmann) Bogin, var. chapmanii J. G. Smith, and var. macrocarpa (J. G. Smith) Bogin (C. Bogin 1955). We accept only one infraspecific rank, i.e., subspecies. Consequently, we have made the appropriate combinations. We accept all of the taxa accepted by Bogin at the varietal level. At specific level we accept Bogin’s var. platyphylla, var. teres, and var. cristata and at subspecific level his var. graminea, var. chapmanii, and var. weatherbiana.

Sagittaria graminea var. macrocarpa actually is synonymous with var. graminea (E. O. Beal 1960b). We therefore are following Beal in recognizing var. macrocarpa sensu Bogin as S. fasciculata. We also accept var. platyphylla, var. teres, and var. cristata at the specific level, leaving only three subspecies. These subspecies can be separated by the branching of the inflorescence and the length of pistillate pedicels.

Subspecies 3 (3 in the flora).

Selected References

None.

Key

1 Inflorescences panicles. Sagittaria graminea subsp. chapmanii
1 Inflorescences racemes. > 2
2 Pistillate pedicels 0.5–3 cm; phyllodia less than 1 cm wide Sagittaria graminea subsp. graminea
2 Pistillate pedicels 2.1–5 cm; phyllodia more than 1 cm wide Sagittaria graminea subsp. weatherbiana
... more about "Sagittaria graminea"
0.15 cm1.5 mm <br />0.0015 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
oblanceoloid +
1.1mm;1.5mm +
papillose +  and smooth +
Obtuse (?) +  and Acute (?) +
Robert R. Haynes +  and C. Barre Hellquist +
Michaux +
attenuate;hastate or sagittate +
0.2 cm2 mm <br />0.002 m <br /> (?) +
2.5 cm25 mm <br />0.025 m <br /> (17.4 cm174 mm <br />0.174 m <br />) +
linear +  and linear-oblanceolate +
0.2cm +  and 4cm +
not papillose +  and coarse +
cylindric +, broadly subulate +  and lanceolate +
more than to equal to ¼ total length +
Sagittaire a feuilles de graminees +
N.B. +, N.S. +, Nfld. and Labr. (Nfld.) +, Ont. +, P.E.I. +, Que. +, Ala. +, Ark. +, Conn. +, Del. +, Fla. +, Ga. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Maine +, Mass. +, Md. +, Mich. +, Minn. +, Miss. +, Mo. +, N.C. +, N.H. +, N.J. +, N.Y. +, Nebr. +, Ohio +, Okla. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Tex. +, Va. +, Vt. +, W.Va. +, Wash. +, Wis. +  and West Indies (Cuba) +
u--shaped +
not tuberculate +
pedicellate +  and pistillate +
0.6 cm6 mm <br />0.006 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
hypogynous +
not +, keeled +  and compressed +
1 (?) +  and 2 (?) +
decumbent +  and floating +
petiolate +  and sessile +
6.4cm;35cm +
flattened;angled +
0.5 cm5 mm <br />0.005 m <br /> (4 cm40 mm <br />0.04 m <br />) +
decumbent +  and floating +
2.5cm;21cm +
1 cm10 mm <br />0.01 m <br /> (8 cm80 mm <br />0.08 m <br />) +
ascending +  and recurved +
6.5 cm65 mm <br />0.065 m <br /> (29.7 cm297 mm <br />0.297 m <br />) +
deciduous +
triangular +
6.5 cm65 mm <br />0.065 m <br /> (17 cm170 mm <br />0.17 m <br />) +
not radiating +  and arranged +
Flora Boreali-Americana +
decumbent +  and floating +
2.5cm;21cm +
persistent +
recurved;spreading +
sculptured +
herbaceous;leathery +
Lophotocarpus +
Sagittaria graminea +
Sagittaria +
species +
white;brown +
emersed +  and submersed +
glabrous +  and sparsely pubescent +
bracteolate +  and branching +