Phascum cuspidatum var. piliferum Hook. & Taylor

Phascum cuspidatum Hedw. var. piliferum (Hedw.) Hook. & Taylor MATERIAL EXAMINED. — Loc. 6, 38455/ A; Loc. 10, 38480; Loc. 15, 38524/ B; Loc. 22, 38578. All c. spor. REMARKS Because of the longly excurrent costa (often up to 1 mm), all specimens have been referred to var. piliferum, though the rectangular superficial ventral cells of the costa may indicate a closer relationship to var. cuspidatum (Flora Briofítica Ibérica III: 177ff.). Phascum cuspidatum has been included in the Red Data Book by Lanfranco (1989: “not recorded since 1876...”), and Frahm & Lüth (2008) found it twice (one cited as P. cuspidatum, the second as var. piliferum).尖叶藓毛状变种（Phascum cuspidatum Hedw. var. piliferum (Hedw.) Hook. & Taylor） 检视标本 — 采集地6：38455/A；采集地10：38480；采集地15：38524/B；采集地22：38578。所有标本均产生孢子体。 讨论：由于中肋（costa）长突出（常可达1毫米），所有标本均被归为该毛状变种，尽管中肋的腹面表层矩形细胞可能显示其与尖叶藓原变种（var. cuspidatum）的亲缘关系更近（《伊比利亚苔藓植物志（Flora Briofítica Ibérica）》第三卷：177页及后续部分）。Lanfranco（1989年："自1876年以来未有记录……"）将尖叶藓（Phascum cuspidatum）纳入《濒危物种红色名录》，而Frahm与Lüth（2008年）两次发现该物种（一次标注为P. cuspidatum，另一次标注为var. piliferum）。