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Shkurko A.V.1, Mamontov Yu.S.1,2, Fedosov V.E.3,4 2022. On the morphological delimitation Of Sphagnum henryense // Arctoa. Vol. 31: 137–144 [in English].

1 – Tsitsin Main Botanical Garden of RAS, Moscow, Russia. E-mails: shen-ku@bk.ru; yur-mamontov@yandex.ru. ORCID: (ASh) 0000-0001-7682-9323; (YuM) 0000-0003-3851-0738
2 – Polar-Alpine Botanical Garden-Institute of the Russian Academy of Sciences, Akademgorodok, Fersmana Street, 18A, Apatity, Murmansk Province, 184209, Russia.
3 – Faculty of Biology, Lomonosov Moscow State University, Leninskiye Gory 1-12, Moscow, 119234 Russia. E-mail: fedosov_v@mail.ru; ORCID: 0000-0002-5331-6346
4 – Botanical Garden-Institute of the Far East Branch of Russian Academy of Sciences, Makovskogo Street, 142, Vladivostok, 690024 Russia

 

KEYWORDS: Sphagnum palustre, Sphagnum henryense, morphological variability, species delimitation, pore patterns

ABSTRACT. Sphagnum henryense (subg. Sphagnum) differs from S. palustre in having abundant small pores on the dorsal surface of branch leaves. Recently studies usually consider it as a doubtful species or even merely a synonym of S. palustre. We revealed S. palustre-like plants, with numerous small round pores very similar to those of S. henryense in collection from Russian Far East, South Kuril Islands. The morphometric studies of these plants, along with S. henryense from other regions of Asia and North America and S. palustre from the same areas and Europe revealed statistically reliable differences in three traits of pores in the hyaline cells on abaxial branch leaf surface: (1) number, (2) length, (3) length to width ratio, and significant differences in (4) branch leaf breadth and (5) number of pores in stem cortex cells, distinguishing the henryense-morphotype. Such morphotype are illustrated, discussed, and likely deserve a further studies.

 

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References

doi: 10.15298/arctoa.31.15