Alisma lanceolatum
An Arrangement of British Plants (ed. 3) 2: 362. 1796.
Introduced
Treatment appears in FNA Volume 22.
Herbs, to 70 cm. Leaves emersed, petiolate; blade lanceolate, 6–23 × 1–4.5 cm. Inflorescences to 70 cm. Flowers chasmogamous; sepals 1.6–3 mm; petals purplish-pink, 4.4–6.5 mm, margins erose, apex acuminate; anthers ellipsoid, 0.6–1.1 mm; style curved, 0.4–0.6 mm, equaling ovary length. Fruiting heads 4–8 mm diam; achenes obovoid, 2–2.9 mm, with 1–2 abaxial grooves, beak erect. 2n = 26, 28 (Eurasian material).
Phenology: Flowering and fruiting summer–fall.
Habitat: Streams and marshes
Elevation: 0–500 m
Distribution
Introduced; Calif., Oreg.
Discussion
Selected References
Lower Taxa
None.
... more about "Alisma lanceolatum"
absent +
absent +
obovoid +
2mm;2.9mm +
2-loculed +
dehiscing +
ellipsoid +
acuminate +
absent +
attenuate;rounded +
erect +
lanceolate +
delicate +
shorter +
lanceolate +
absent +
u--shaped +
absent +
glabrous +
filiform +
hypogynous +
chasmogamous +
compressed +
absent +
whorled +
true +
2-3-ribbed +
absent +
petiolate +
sheathing +
emersed +
basal +
translucent +
absent +
equaling +
scapose +
whorled +
erect +
starlike +
ascending +
entire +
purplish-pink +
deciduous +
delicate +
triangular +
1-loculed +
not radiating +
distinct +
basal +
absent +
15;20 +
parallel +
An Arrangement of British Plants (ed. 3) +
1796 +
scapose +
whorled +
erect +
flattened +
absent +
longitudinal +
not septate +
milky +
mature +
persistent +
herbaceous +
erect +
not sculptured +
Introduced +
distinct +
absent +
6;9 +
absent +
curved +
lateral +
Alisma lanceolatum +
Alisma +
species +
absent +
floating-leaved +
perennial +
glabrous +
2;10 +