02599nas a2200253   4500008004100000245015300041210006900194260001200263300001400275490000800289520174100297653002202038653001702060653002302077653002102100653001702121653001802138653001902156653000802175653001302183100001402196700001802210856011702228       2005                        eng d00aA new species of Isoetes (Isoetaceae) from Turkey, with a study of microphyll intercellular pectic protuberances and their potential taxonomic value0 anew species of Isoetes Isoetaceae from Turkey with a study of mi  c2005///  a213 - 2280 v1473 aIsoetes anatolica sp. nov. is described from a population growing in seasonal ponds of a mountain near the southern coast of the Black Sea in Bolu, Turkey. It is a robust, amphibious quillwort, characterized by semiterete, carnose microphylls, semicircular foliar section, smooth cuticle, prominent cuticular pegs, stomata, several collenchymatous strands, abundant pectic filaments and connections in the cells of the translacunar diaphragms, incurved alae, well developed ligula, small carnose labium, no velum, well-formed bulliform megaspores and obscurely muriform microspores. Plants were investigated anatomically and a description with additional diagnostic characters is included. Morphological affinities with other species of the genus are discussed. Intercellular pectic protuberances (IPP) were studied in the cells of the translacunar diaphragms of the microphylls of several species of Isoetes including I. anatolica. The IPP were examined to determine if they could provide diagnostic characters. They were detected with TBO and analysed using light and scanning electron microscopy. Types of IPP and species bearing them were as follows: warts in I. adspersa, I. andina, I. boliviensis, I. duriei, I. engelmannii, I. lechleri, I. longissima, I. melanopoda, I. storkii, I. velata. ssp. velata, and I. velata ssp. asturicense; warts and filaments in I. brochonii, I. lacustris, and I. setacea, and connections in I. anatolica and I. malinverniana. IPP are lacking in I. boryana, I. echinospora, I. histrix and I. novogranadensis. Combination of type, density, and distribution of IPP promises to be a useful vegetative character in a genus in which diagnostic characters are scarce. © 2005 The Linnean Society of London.10aIsoetes anatolica10aLeaf anatomy10aPectic connections10aPectic filaments10aPectic warts10aPteridophytes10aSeasonal ponds10aSEM10ataxonomy1 aPrada, C.1 aRolleri, C.H.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-13844276026&partnerID=40&md5=fa39504c212fa1cc83a20ce72e22ce7b