Plagiothecium ikegamii Sakurai

Plagiothecium ikegamii Sakurai View in CoL , Botanical Magazine (Tokyo) 62: 113, f. 3. 1949.

= Plagiothecium roeseanum var. alpinum Kern View in CoL , Jahresbericht der Schlesischen Gesellschaft für Vaterländische Cultur 91 (2 b): 64. 1914 ≡ Plagiothecium roeseanum fo. alpinum (Kern) Jedl., Spisy Vydávané Přírodovĕdeckou Fakultou Masarykovy University 308: 37. 1948 ≡ Plagiothecium alpinum (Kern) Jedl. View in CoL , Spisy Vydávané Přírodovĕdeckou Fakultou Masarykovy University 318: 5, 1950. Type: Italy, Felsritzen des Cruschettapasses an der Schweizer Grenze, 2300 m, 30 July 1913, F. Kern, PC 0132603!

= Plagiothecium roeseanum fo. rigidum Jedl., Spisy Vydávané Přírodovĕdeckou Fakultou Masarykovy University 308: 37. 1948. Type (authentic specimens cited in Jedlička 1961): Moravia, Jeseníky, Švýcárna, 1300 m, ster., J. Podpěra, H. M. B.; Brno, Bílovice, cfr., K. Doležal, H. U. B., as. P. denticulatum View in CoL ; Adamov, in conc. riv. Kateřinský, ster., J. Jedlička, H. J.; Slovakia, Vysoké Tatry, Štrbské Solisko, in Calamagrostideto villosae, solo granitico, 1385 m, ster., Krajina, H. U. P., sub P. denticulatum View in CoL (n. v.).

= Plagiothecium roeseanum fo. subdentatum Jedl. View in CoL , Spisy Vydávané Přírodovĕdeckou Fakultou Masarykovy University 308: 38. 1948 ≡ Plagiothecium subdentatum (Jedl.) Jedl. View in CoL , Spisy Vydávané Přírodovĕdeckou Fakultou Masarykovy University 318: 5. 1950. Type (authentic specimens cited in Jedlička 1961): Moravia, Jeseníky, ster. cum Desmatodon, Frank, H. P., Inter. p. Dalečín et Jimramov, 500 m, ster., J. Podpěra, H. P.; Carp. occid., Rožnov, s. m. Radhošt, versus Kluzov, ster., J. Podpěra, H. P.; Turcia, Salonichi, Kartaš-dagh, 1200 m, ster., J. Podpěra, H. P. (n. v.).

= Plagiothecium propaguliferum Broth. , in sched. Basis: Japan, Sendai, Y. Iishiba, July 1907, herb. J. Cardot, I. Thériot, PC 0132610!

= Plagiothecium apiculatum Sakurai , in sched. Basis: Japan, Niigata Pref., Toyanao, 2 Apr. 1942, Y. Ikegami 4256, MAK B 115140!

Type.

Japan, Etigo Prov., Mt. Renge, ad terram, ca. 2200 m, Y. Ikegami 11270, herb. K. Sakurai 16336, August 1949; Shinano Prov., Mt. Shirouma, 2500 m, N. Takaki in herb. K. Sakurai 16368, August 1949 (n. v.).

Description.

Plants medium-sized, yellowish-green; stems 2–4 cm long; leaves julaceous, concave, imbricate, symmetrical, more or less folded, 1.3–2.0 × 0.5–1.2 mm (Fig. 6 C View Figure 6 ); the apex denticulate; laminal cells 100–150 × 10–12 μm at midleaf (Fig. 6 D View Figure 6 ), cell areolation quite loose; decurrencies of 1–2 rows of rectangular to quadrate cells; capsule inclined.

Distribution.

Asia ( Japan); Europe ( Czech Republic, Italy), but the range of this taxon still requires research.