Sagittaria teres

S. Watson in A. Gray et al.

in A. Gray et al.,Manual of Botany of the Northern United States (ed. 6) 555. 1890.

Common names: Quill-leaved sagittaria
Endemic
Treatment appears in FNA Volume 22.

Herbs, perennial, to 80 cm; rhizomes absent; stolons present; corms present. Leaves emersed or submersed, sessile, phyllodial, nearly terete; emersed, to 60 × 0.15–0.7 cm; submersed, 3.5–18.5 × 0.15–0.4 cm. Inflorescences racemes, of 1–4 whorls, emersed, 2.5–4 × 2.5–6 cm; peduncles 10–80 cm; bracts connate more than or equal to total length, subulate, 2–3 mm, delicate, not papillose; fruiting pedicels obliquely ascending, filiform, 1 cm. Flowers to 1.5 cm diam.; sepals recurved, not enclosing flower; filaments dilated, equaling anthers, pubescent; pistillate pedicellate, without ring of sterile stamens. Fruiting heads 0.6–1 cm diam.; achenes obovoid-cuneate, abaxially keeled, 2–3 × 1.2–1.5 mm, beaked; faces not tuberculate, wings absent, glands 1–2; beak erect to horizontal, 0.3–0.4 mm. 2n = 22.


Phenology: Flowering summer (Jul–Sep).
Habitat: Sandy pond shores and swamps of acid waters, mainly along Atlantic Coastal Plain
Elevation: 0–100 m

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Sagittaria teres"
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
keeled;obovoid-cuneate +
1.2mm;1.5mm +
papillose +  and smooth +
Obtuse (?) +  and Acute (?) +
Robert R. Haynes +  and C. Barre Hellquist +
S. Watson in A. Gray et al. +
attenuate;hastate or sagittate +
erect +  and horizontal +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
linear +  and obovate +
not papillose +
filiform +  and subulate +
equal to total length +  and more than +
Quill-leaved sagittaria +
Mass. +, N.J. +, N.Y. +  and R.I. +
0–100 m +
u--shaped +
not tuberculate +
glabrous +  and pubescent +
pistillate +, staminate +, sessile +  and pedicellate +
0 cm0 mm <br />0 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
hypogynous +
not +, keeled +  and compressed +
1 (?) +  and 2 (?) +
Sandy pond shores and swamps of acid waters, mainly along Atlantic Coastal Plain +
decumbent +  and floating +
2.5 cm25 mm <br />0.025 m <br /> (4 cm40 mm <br />0.04 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (6 cm60 mm <br />0.06 m <br />) +
3.5cm;18.5cm +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
decumbent +  and floating +
submersed +, floating +  and emersed +
ascending +  and recurved +
10 cm100 mm <br />0.1 m <br /> (80 cm800 mm <br />0.8 m <br />) +
deciduous +
terete +  and triangular +
Flowering summer (Jul–Sep). +
not radiating +  and arranged +
in A. Gray et al.,Manual of Botany of the Northern United States (ed. 6) +
decumbent +  and floating +
persistent +
sculptured +
herbaceous;leathery +
Lophotocarpus +
Sagittaria teres +
Sagittaria +
species +
white;brown +
emersed +  and submersed +
glabrous +  and sparsely pubescent +
bracteolate +  and branching +