Difference between revisions of "Alisma"

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Alisma
Alisma plantago-aquatica
Alisma plantago-aquatica
Plant Info
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Liliopsida
Order: Alismatales
Family: Alismataceae
Genus: Alisma
L.

Species
A. gramineum

A. lanceolatum
A. plantago-aquatica
A. subcordatum
A. triviale
A. wahlenbergii

Alisma is a genus of plants in the Alismataceae or water-plantain family. The genus consists of aquatic plants with leaves either floating or submerged, found in a variety of still water habitats. The flowers are hermaphrodite, and are arranged in panicles, racemes, or umbels. Alisma flowers have six stamens, numerous free carpels in a single whorl, each with 1 ovule, and subventral styles. The fruit is an achene with a short beak.

The nineteenth century British art and social critic John Ruskin believed that the particular curve of the leaf-ribs of Alisma represented a model of 'divine proportion' and helped shape his theory of Gothic architecture.

Reference

  • Bjorkqvist, I., in Op. Bot. (Lund)17:1 - 128 (1967); 19:1 - 138 (1968)


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