01357nas a2200133   4500008004100000245007800041210006900119300001200188490000700200520094200207100001601149700001401165856004401179       2015                        eng d00aDisentangling Isoetes setacea and removing threats to Isoetes echinospora0 aDisentangling Isoetes setacea and removing threats to Isoetes ec  a811-8150 v643 aThe name Isoetes setacea has been applied to two different species, causing nomenclatural and taxonomic confusion. Some authors have rejected it on that account, yet it is currently used in a sense that is incompatible with its type. That type represents one of two similar species, I. echinospora and I. lacustris, which still today grow together at the type locality. An epitype is designated here, ensuring that I. setacea is sunk in synonymy under I. lacustris. A second name potentially threatening I. echinospora is I. tenella. It is currently regarded as a synonym of I. lacustris, but its type, a plate in Flora Danica, cannot be confidently identified, nor are there any specimens associated with it. Again, an epitype is designated to cement the current disposition of I. tenella and remove that second threat from I. echinospora. The correct name of the species generally misnamed I. setacea is I. delilei, here lectotypified.1 aGreuter, W.1 aTroia, A.  uhttps://isoetes.myspecies.info/node/22501649nas a2200193   4500008004100000245009000041210007000131260001200201300001200213490000700225520102500232653001501257653001201272653001401284653000901298100001401307700001801321856011601339       2002                        eng d00aPhylogeny of Isoëtes (Lycopsida): Resolving basal relationships using rbcL sequences0 aPhylogeny of Isoëtes Lycopsida Resolving basal relationships usi  c2002///  a83 - 890 v513 aThe phylogenetic relationships of Isoëtes (Isoëtaceae) were investigated by means of a cladistic analysis using plastid rbcL sequences and a representative sample of 18 species. The analysis supports a basal split in Isoëtes separating two main groups, one including aquatic species from South America (I. bradei and I. amazonica) and West Africa (I. kersii and I. schweinfurthii), and the other including aquatic, amphibious and terrestrial species representing all major continents. Higher level relationships remain unresolved, but supported groups do conflict with previous morphology-based hypotheses. Comparatively low levels of sequence divergence indicate that the use of more rapidly evolving regions will be required to resolve higher level relationships. The phylogenetically isolated nature of Isoëtes will in such analyses make standard outgroup comparisons problematic, and results presented here will in this respect prove important by providing support for choosing among alternative rooting options.10aIsoetaceae10aIsoetes10aPhylogeny10arbcL1 aRydin, C.1 aWikström, N.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-0036254372&partnerID=40&md5=f4c2dc2699e8c72b00c4dccdb1f20c1f01460nas a2200265   4500008004100000245007800041210006900119260001200188300001400200490000700214520065700221653001600878653001200894653001800906653001000924653002700934653001400961653001100975653001600986100001701002700002101019700001701040700002001057856011701077       2005                        eng d00aTwo new species of the genus Isoetes L. (Isoetaceae-Lycopsida) from India0 aTwo new species of the genus Isoetes L IsoetaceaeLycopsida from   c2005///  a109 - 1160 v543 aTwo new, primitive quillwort species, I. udupiensis and I. divyadarshanii, are described from peninsular India. Cytologically both species are diploid and unique for India in having 22 chromosomes without fragments. Megaspores of both species are monomorphic, whereas in the previously described species, they are di-to polymorphic. Isoetes udupiensis is unique in having deltoid-shaped megaspores and dominant microspory. The similarity in morphology of both species to subgenus Euphyllum and to the remaining Indian species of subgenus Isoetes, suggests that they may be connecting links between primitive and derived forms within the genus in India.10aChromosomes10aDiploid10aI. udupiensis10aIndia10aIsoetes divyadarshanii10aPhylogeny10aSpores10aSystematics1 aShukla, P.K.1 aSrivastava, G.K.1 aShukla, S.K.1 aRajagopal, P.K.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-15944372672&partnerID=40&md5=cad8ccfe64fc2bc9f7b174901a9b8153