Isoetes histrix
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| Isoetes histrix Bory |
Isoetes histrix (Land Quillwort) is a quillwort native to the Mediterranean region, northwestern Africa, and the coasts of western Europe northwest to Cornwall. It occurs mainly in temporarily wet habitats (vernal pools).
The leaves are 3-8 cm long, and summer-deciduous. It differs from Isoetes durieui by its (not always present) large black scales between the leaves and a surface of megaspores with tubercles (I durieui has a network of ridges).
