Alisma subcordatum
Medical Repository hexade 2, 5:354. 1808.
Common names: Southern water-plantain alisma subcorde
Illustrated
Synonyms: Alisma parviflorum Pursh Alisma plantago-aquatica var. parviflorum (Pursh) Torrey
Treatment appears in FNA Volume 22.
Herbs, to 6 dm. Leaves emersed, rarely floating, petiolate; blade ovate to elliptic, to 15 × 10 cm. Inflorescences to 1 m. Flowers chasmogamous; sepals 1.5–2.5 (–6) mm; petals white, 1–3 mm, margins slightly erose, apex mostly acuminate; anthers rounded, 0.4–0.6 mm; style curved, 0.2–0.4 mm, ¼ length ovary. Fruiting heads 2–4 mm diam; achenes obliquely ovoid, 1.5–2.2 mm, abaxially rounded, with 1 abaxial groove; beak ascending. 2n =14.
Phenology: Flowering spring–fall.
Habitat: Shallow ponds, stream margins, marshes, and ditches
Elevation: 50–1500 m
Distribution
N.B., Ont., Que., Ala., Ark., Colo., Conn., Del., D.C., 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., Mexico
Discussion
Selected References
None.
Lower Taxa
None.
... more about "Alisma subcordatum"
absent +
absent +
rounded;ovoid +
1.5mm;2.2mm +
2-loculed +
dehiscing +
rounded +
acuminate +
absent +
attenuate;rounded +
ascending +
delicate +
shorter +
lanceolate +
absent +
N.B. +, Ont. +, Que. +, Ala. +, Ark. +, Colo. +, Conn. +, Del. +, D.C. +, 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. + and Mexico +
u--shaped +
absent +
glabrous +
filiform +
hypogynous +
chasmogamous +
compressed +
absent +
Present +
whorled +
2-3-ribbed +
absent +
petiolate +
sheathing +
floating +
emersed +
basal +
translucent +
absent +
scapose +
whorled +
erect +
starlike +
ascending +
entire +
white +
deciduous +
delicate +
triangular +
1-loculed +
not radiating +
distinct +
basal +
absent +
15;20 +
parallel +
Medical Repository +
1808 +
scapose +
whorled +
erect +
flattened +
absent +
longitudinal +
not septate +
milky +
mature +
persistent +
herbaceous +
erect +
not sculptured +
Illustrated +
distinct +
absent +
6;9 +
absent +
curved +
lateral +
Alisma subcordatum +
Alisma +
species +
absent +
floating-leaved +
perennial +
glabrous +
2;10 +