Isoëtes

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Related to Isoetes: Lycopodium

Isoëtes

 

a genus of plants of the family Isoëtaceae. The plants are perennials that live underwater (aquatic forms) or in extremely wet areas (amphibious and terrestrial forms). There are approximately 70 species, distributed throughout the world. They are only rarely encountered in the tropics. The USSR has four species. The plants, which are 5–20 cm high, usually grow in groups or form small thickets. Two species, I. lacustris and I. setacea (formerly I. echinospora), grow on the sandy bottoms of lakes, creeks, and oxbows in the central and northern zones of the European USSR and, occasionally, in Siberia. Two other species grow in the Far East.

References in periodicals archive ?
Chromosomes counts for Isoetes from the Neotropics, particularly in the mountainous regions from Costa Rica to Argentina, have revealed variation in ploidy levels from 2n = 22 to 2n = 132 (Hickey, 1984; Hickey et al.
Britton offered that comment he had just begun his extensive and important studies of the lycophyte genus Isoetes (Isoetaceae) in the Southeast.
Collection of Isoetes on the Kamchatka Peninsula were conducted in September 2002 by O.
Isoetes melanopoda * Gray & Durieu [black-footed].
Although plants in the genus Isoetes (Isoetaceae) are easily overlooked among other vegetation, members of this group have long had the attention of botanists in North America (Engelmann, 1882).
microsporas de veinticuatro especies de Isoetes que crecen en Sud
Mean pH values in Dutch and Norwegian Isoetes stands are around 6, whereas pore water carbon dioxide concentrations are typically (much) higher than surface water concentrations (Table 1).
Huperzia haleakalae *** - X Huperzia mannii 05/15/1992 X X Huperzia nutans 03/28/1994 X X Huperzia stemmermanniae ** - X X Isoetes hawaiiensis - X Marsilea villosa * 06/22/1992 X X Microlepia strigosa var.
Publication of the treatment of the genus Isoetes for Flora of North America (Taylor et al.
Despite this, during the research six new taxa were discovered in the genera Cheilanthes, Isoetes, Ophioglossum, Pilularia, and Selaginella.