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 Add this item to the list   821935 Original description
   
Remarks (public):Comments: This species is morphologically close to Juncorrhiza casparyana, which differs in having smaller spores with thinner spore walls [spores (12–)13.5–23(–28) µm in diam., spore walls (1–)2–4(–10) µm thick, Vánky 2012]. An extreme variability of spore sizes is also a characteristic feature of Juncorrhiza maritima. Phylogenetically, this species is, however, not related to Juncorrhiza casparyana but to J. aschersoniana; the latter differs in having smaller spores, that are ovoidal in shape, and in having thinner spore walls [spores ovoid to subglobose, (12.5–)14.5–21.5(–25.5) × (11–)12.5–17(–21.5) µm, spore walls 0.5–2.5 µm thick, Vánky 2012].
Distribution and ecology: The only known collection of Juncorrhiza maritima is from plants growing close to the sea shore, periodically saturated by sea water, in a halophyte grassland community (Juncetum gerardii). The host plant Juncus ranarius was in the past commonly considered synonymous with Juncus bufonius, but it is a distinct species growing in the coastal and inland saline environment in Eurasia, North Africa, and North America and considered as halophyte plant (Cope & Stace 1978). Assuming that Juncorrhiza maritima is host species specific it could be also considered as halophyte species. The species is currently known only from the type locality in Poland, but the literature reports of Juncorrhiza aschersoniana on Juncus ranarius (Vánky 2012), or Juncorrhiza casparyana on Juncus bufonius (Fineran 1978, Vánky & McKenzie 2002, Vánky 2012) could refer to the new species.
 
Description type:Original description 
Description:Associated with Juncus ranarius. Sori forming galls on the top of fine roots, galls cylindrical to irregularly fusiform, rarely bifurcated, moderately dark brown, except the white colour of the gall tips, 2–7 × 1–2 mm, filled with a pale yellowish brown, agglutinated mass of spores. Spores intracellular, globose or rarely slightly subglobose, extremely variable in size, (10–)10.5–30 × 10–28.5(–30) µm (including ornamentation), pale yellow to yellow, rarely golden yellow; wall two-layered, extremely variable in thickness, 1.5–9.0(–10.0) µm thick (including very thin inner layer, ca. 0.5 µm thick), spore profile undulate to tuberculate, spore surface verrucose to tuberculate as seen by LM, tuberculate as seen by SEM.
Type: Poland, Pomerania Province: Mechelińskie Łąki Reserve, ca. 31 km N of Gdańsk, 54°37'26''E, 18°30'34''E, alt. 0 m a.s.l., on Juncus ranarius (Juncaceae), 27 July 2006, leg. J. Piątek & M. Piątek (holotype: KRAM F-56780; type sequence including the ITS and D1/D2 LSU nuclear rDNA is available in GenBank: KP413062).
 
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