Sagittaria cristata

Engelmann

Proceedings of the Davenport Academy of Natural Sciences 4: 29. 1883.

Endemic
Synonyms: Sagittaria graminea var. cristata (Engelmann) Bogin
Treatment appears in FNA Volume 22.

Herbs, annual or perennial, to 75 cm; rhizomes absent; stolons present; corms present. Leaves emersed, sessile, phyllodial, linear to lanceolate, flattened, 15–25 (–40) × 1.5–4 cm, or petiole triangular, 15–50 cm, blade linear to elliptic-lanceolate, 4–10 × 0.3–2 cm. Inflorescences racemes, of 3–6 whorls, 1.5 × 4 cm; peduncle 20–60 cm; bracts connate greater than or equal to ¼ total length, ovate, 4–10 mm, nearly scarious, not papillose; fruiting pedicels spreading, cylindric, 0.8–3 cm. Flowers to 0.8 cm diam.; sepals recurved to spreading, not enclosing flower; filaments dilated, exceeding anthers in length, pubescent; pistillate pedicellate, without ring of sterile stamens. Fruiting heads 1.2–2 cm diam.; achenes cuneate-obovoid, abaxially keeled, 2.5–3 × 1.4–1.8 mm, beaked; faces not tuberculate, wings 1, entire, glands absent; beak ascending to horizontal, 0.4–0.7 mm.


Phenology: Flowering summer (Jul–Aug).
Habitat: Sandy margins and bottoms of lakes, ponds, and swamps
Elevation: 100–1000 m

Distribution

V22 240-distribution-map.jpg

Ont., Ill., Iowa, Mich., Minn., Mo., Nebr., Wis.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Sagittaria cristata"
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
keeled;cuneate-obovoid +
1.4mm;1.8mm +
papillose +  and smooth +
Obtuse (?) +  and Acute (?) +
Robert R. Haynes +  and C. Barre Hellquist +
Engelmann +
attenuate;hastate or sagittate +
ascending +  and horizontal +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
4 cm40 mm <br />0.04 m <br /> (10 cm100 mm <br />0.1 m <br />) +
linear +  and elliptic-lanceolate +
0.3cm +  and 2cm +
not papillose +
cylindric +  and ovate +
equal to ¼ total length +  and greater than +
Ont. +, Ill. +, Iowa +, Mich. +, Minn. +, Mo. +, Nebr. +  and Wis. +
100–1000 m +
u--shaped +
not tuberculate +
1.2 cm12 mm <br />0.012 m <br /> (2 cm20 mm <br />0.02 m <br />) +
pistillate +, staminate +, sessile +  and pedicellate +
0 cm0 mm <br />0 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
hypogynous +
not +, keeled +  and compressed +
Sandy margins and bottoms of lakes, ponds, and swamps +
decumbent +  and floating +
1.5 cm15 mm <br />0.015 m <br /> (?) +
4 cm40 mm <br />0.04 m <br /> (?) +
25 cm250 mm <br />0.25 m <br /> (40 cm400 mm <br />0.4 m <br />) +
15cm;25cm +
flattened;linear;lanceolate +
1.5 cm15 mm <br />0.015 m <br /> (4 cm40 mm <br />0.04 m <br />) +
decumbent +  and floating +
submersed +, floating +  and emersed +
ascending +  and recurved +
20 cm200 mm <br />0.2 m <br /> (60 cm600 mm <br />0.6 m <br />) +
deciduous +
triangular +
15 cm150 mm <br />0.15 m <br /> (50 cm500 mm <br />0.5 m <br />) +
Flowering summer (Jul–Aug). +
not radiating +  and arranged +
Proceedings of the Davenport Academy of Natural Sciences +
decumbent +  and floating +
persistent +
recurved;spreading +
sculptured +
herbaceous;leathery +
Sagittaria graminea var. cristata +
Sagittaria cristata +
Sagittaria +
species +
white;brown +
perennial +  and annual +
emersed +  and submersed +
glabrous +  and sparsely pubescent +
bracteolate +  and branching +