Isoetes histrix

Taxobox
name = "Isoetes histrix"


image_width = 240px
regnum = Plantae
divisio = Lycopodiophyta
classis = Isoetopsida
ordo = Isoetales
familia = Isoetaceae
genus = "Isoëtes"
species = "I. histrix"
binomial = "Isoetes histrix"
binomial_authority = Bory

"Isoetes histrix" (Land Quillwort) is an aquatic pteridophyte native to the Mediterranean region, northwestern Africa, and the coasts of western Europe northwest to Cornwall. It occurs mainly in temporarily wet habitats, otherwise called vernal pools.

The leaves are 3-8 cm long, and summer-deciduous. It differs from "Isoetes durieui" by its large black scales between the leaves, though these are not always present, and a surface of megaspores with tubercles, whereas "I durieui" has a network of ridges.

References

* [http://rbg-web2.rbge.org.uk/cgi-bin/nph-readbtree.pl/feout?FAMILY_XREF=&GENUS_XREF=Isoetes&SPECIES_XREF=histrix&TAXON_NAME_XREF=&RANK= Flora Europaea: "Isoetes histrix"]