Marsupella pseudofunckii S.Hatt., J. Hattori Bot. Lab. 4: 63, 1950

Bakalin, Vadim, Choi, Seung Se & Park, Seung Jin, 2021, Revision of Gymnomitriaceae (Marchantiophyta) in the Korean Peninsula, PhytoKeys 176, pp. 77-110 : 77

Marsupella pseudofunckii S.Hatt., J. Hattori Bot. Lab. 4: 63, 1950 Figure 4

Type.

Japan, Echime Prefectura , Omogo, 27 July 1940, S. Hattori 5540 (holotype TNS [174467!])

Description.

Plants in loose mats, more or less rigid, erect to ascending, strongly distichous, brownish green to deep green, rarely brown with rusty, purplish or reddish tint near apices, strongly dilated to the perianth, 500.0-600.0 μm wide in normally developed part, with common depauperate plants (in shady and dry habitats) starting from 150.0 μm wide, near perianth much wider and reaching 1100.0 μm, 10.0-25.0 mm long. Rhizoids virtually absent with exception of leafless geotropic stolons, where common, obliquely spreading, separated or united into unclear fascicles. Stem branching ventral and (more commonly) lateral, as subfloral innovations and ventral leafless geotropic stolons that sometimes transform into normal branches; stem cross section transversely elliptic, differentiated into strata, outer layer with walls unequally thickened (but external wall thin), 12.0-25.0 μm along margin, trigones moderate, concave, scleroderm cells 10.0-13.0 μm in diameter, with strongly thickened walls and moderate in size, concave trigones, gradually transformed to inner tissue, cells in inner part 10.0-18.0 μm in diameter, walls thickened to almost thin, trigones moderate, concave. Leaves transversely inserted, not or barely sheathing stem in base, obliquely spreading, transversely oriented, evidently keeled-conduplicate with plane margin, keel straight to slightly arched or suddenly turned downward near the end, leaves contiguous to distant, rarely enclosed one to another, 220.0-430.0 μm long and 300.0-600.0 μm wide, obliquely transversely elliptic, divided by γ -shaped sinus descending to 1/4-1/3 of leaf length into two strongly unequal gibbous lobes with acute to obtuse or very rarely rounded apes. Cells in the midleaf 10.0-18.0 × 7.0-15.0 μm, walls thin, trigones moderate in size to large, triangle to convex, cuticle smooth; cells along margin 5.0-8.0(-10.0) μm, thin to (more commonly) thickened, trigones small to large, mostly concave, cuticle smooth; cells in lobe middle 7.0-15.0 × 6.0-12.0 μm, walls thin to thick, trigones moderate to large, triangle to convex. Dioicous. Androecia intercalary, spicate, with 2-3 pairs of bracts, sequential generations divided by 10 and more pairs of sterile leaves, 1-3-androus, stalk biseriate, 125.0-220.0 μm long, body nearly spherical, ca. 150.0 μm in diameter; bracts cupped to spoon-shaped, commonly with recurved margin. Perianth hidden within bracts or barely exerted, couple-shaped, ca. 150.0 μm long and 400.0 μm wide, perigynium well developed, 500.0-700.0 μm long, with two pairs of bracts; bracts sheathing perigynium and above incurved inward to the perianth if archegonia were fertilized, or obliquely spreading, if archegonia not fertilized.

Ecology.

Acidophilic meso- to hygrophyte taxon. The species occupies dry to moist cliffs, rarely wet rocks as well as stones near streams, in open to (more commonly) partly shaded places. It grows together with various Scapania and Cephaloziella or Marsupella tubulosa in wetter habitats. In dry to mesic and shady conditions, it is associated with Tetralophozia filiformis , Bazzania ovifolia , Cylindrocolea recurvifolia , Diplophyllum taxifolium , D. albicans , and Syzygiella autumnalis .

Distribution.

Temperate Montane East Asian species, aside from Korea known from China (Taiwan, Zheijiang (the report from the latter is based on Zhu et al. 1998)), Russian Far East (southern Sikhote-Alin only), and Japan. In Korea, Jeju-do, Chungchengnam-do, Gyeongbuk-do, Gyeongnam-do, Gangwon-do, and Jeollabuk-do ( Kim and Hwang 1991; Yamada and Choe 1997). This species is here newly recorded from Gyeongsangbuk-do Province.

Specimens examined.

Chungchengnam-do: Mt. Daedun , 36°08'02.9"N, 127°18'29.1"E, 343 m, 31 Mar 2009, S.S. Choi 3414 (JNU), Mt. Gyeryong , 36°21'06.9"N, 127°12'50.9"E, 290 m, 8 Jul 2009, S.S. Choi 4083 (JNU); Gangwon-do: Mt. Seorak , 38°06'02.8"N, 128°23'43.1"E, 840 m, 28 Aug 2009, S.S. Choi 4257 (JNU), Mt. Seorak , 38°06'35.7"N, 128°25'33.7"E, 1449 m, 21 Sep 2009, S.S. Choi 5146 (JNU), Mt. Seorak , 38°07'55.5"N, 128°25'42.3"E, 805 m, 14 Oct 2010, S.S. Choi 8655 (JNU); Gyeongsangbuk-do: Is. Ulleung, Mt. Mireuk , 26 Aug 2008, S.S. Choi site5-191 (JNU), Seonginbong, 22 Aug 2008, S.S. Choi site6-48 (JNU); Gyeongsangnam-do: Mt. Jiri , 35°20'02.4"N, 127°43'54.2"E, 1720 m, 15 Jun 2009, S.S. Choi 3772 (JNU); Jeju-do: Mt. Halla , 33°21'45.3"N, 126°32'08.9"E, 1916 m, 8 Aug 2010, S.S. Choi 7757 (JNU); Jeollabuk-do: Mt. Deogyu , 22 May 2008, S.S. Choi 545 (JNU), Mt. Jeoksang , 35°57'24.3"N, 127°41'86.3"E, 724 m, 18 Mar 2009, S.S. Choi 3416 (JNU), Mt. Naejang , 35°29'16.2"N, 126°53'46.3"E, 250 m, 16 Mar 2009, S.S. Choi 3482 (JNU); Jeollanam-do: Mt. Dureun, 5 Feb 2009, S.S. Choi 3057 (JNU), Mt. Jiri, 35°17'44.0"N, 127°31'59.0"E, 1421 m, 29 Apr 2009, S.S. Choi 3537 (JNU) .

Comments.

This is a distinctive species belonging to the group of Marsupella with conduplicate leaves. It may be mistaken for M. koreana (distinguishing characters given under that species) or (less probably) for M. yakushimensis . The latter and M. pseudofunckii share conduplicate leaves with not revolute margins, although being different in: 1) lobes are subequal in M. yakushimensis , but strongly unequal in M. pseudofunckii , 2) leaf margin of M. yakushimensis is commonly undulate and lobe ends turned away of the stem, whereas leaf margin in M. pseudofunckii is always plane and not reflexed away from the stem, 3) shoots of M. pseudofunckii are strongly dilated to the perianth, versus almost stable shoot width in M. yakushimensis , 4) the width of sterile shoots of M. pseudofunckii generally less than 0.6 mm, but in M. yakushimensis it commonly is more than 1.5 mm.

Figures

Figure 4. Marsupella pseudofunckii S. Hatt. A plant habit B, C leaves D female plant (fragment) E male plant (fragment) F cells along leaf margin G midleaf cells H stem cross section. Scale bars: a 1 mm (A); b 100 µm (F-H); c 1 mm (B-E). All from Choi 545 (JNU).