Sagittaria brevirostra

Mackenzie & Bush

Rep. (Annual) Missouri Bot. Gard. 16:102. 1905.

Common names: Midwestern arrowhead
Synonyms: Sagittaria engelmanniana subsp. brevirostra (Mackenzie & Bush) Bogin
Treatment appears in FNA Volume 22.

Herbs, perennial, to 70 cm; rhizomes absent; stolons present; corms present. Leaves emersed; petiole terete-ridged, to 39 cm; blades sagittate, 5–20 × 2–8 cm, basal lobes equal to or less than remainder of blade. Inflorescences racemes or panicles, of 5–12 whorls, emersed, 25–30 × 6–15 cm; peduncles to 45 cm; bracts distinct or if connate, then less than ¼ total length, long-acuminate, 10–40 mm, firm, not papillose; fruiting pedicels spreading to ascending, cylindric, 1–2.5 cm. Flowers to 3.5 cm diam.; sepals recurved to spreading, not enclosing flower; filaments cylindric, longer than anthers, glabrous; pistillate pedicellate, without ring of sterile stamens. Fruiting heads (1.2–)1.5–2.5 cm diam.; achenes cuneate-obovoid, without abaxial keel, 2.1–3.1 × 1.4–2.2 mm, beaked; faces ??, wings 0–2, ± entire, glands absent; beak lateral, ascending apically, 0.4–1.7 mm. missing datum is whether faces are tuberculate or not; if datum is not easily available, change wording to near-original "faces with 0–2 wings."

Phenology: Flowering summer (Jul–Sep).
Habitat: Slightly basic to slightly acidic to alkaline waters of ponds, lakes, and swamps
Elevation: 100–�1800 m


V22 566-distribution-map.jpg

Sask., Ala., Ark., Calif., Colo., Ill., Ind., Iowa, Kans., Ky., La., Mich., Minn., Miss., Mo., Nebr., Ohio, Okla., S.Dak., Tex., Va., Wis.


Selected References


Lower Taxa

... more about "Sagittaria brevirostra"
Robert R. Haynes +  and C. Barre Hellquist +
Mackenzie & Bush +
Midwestern arrowhead +
Sask. +, Ala. +, Ark. +, Calif. +, Colo. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Mich. +, Minn. +, Miss. +, Mo. +, Nebr. +, Ohio +, Okla. +, S.Dak. +, Tex. +, Va. +  and Wis. +
100–�1800 m +
Slightly basic to slightly acidic to alkaline waters of ponds, lakes, and swamps +
Flowering summer (Jul–Sep). +
Rep. (Annual) Missouri Bot. Gard. +
Illustrated +  and Endemic +
Sagittaria engelmanniana subsp. brevirostra +
Sagittaria brevirostra +
Sagittaria +
species +