20. Molendoa Lindb.   大丛藓属 da-cong xian shu

Utkast Eur. Bladmoss. 29. 1878.

 

Plants small to medium-sized to rather robust, (1.5–)3–15 cm high, bright green to yellowish green, in loose tufts. Stems erect, fragile, usually simple, rarely branched; triangular in cross section; central strand present. Leaves contorted-curved when dry, erectopatent when moist, broadly sheathing at the base, narrowly lanceolate above; costa stout, percurrent; upper leaf cells subquadrate to irregularly hexagonal, green, thick-walled, with several simple papillae; basal cells rectangular, smooth, usually hyaline. Dioicous. Setae elongate; capsules obovoid; opercula conic-rostrate, with a long, oblique beak, often persistent with columella; peristome teeth absent. Calyptrae cucullate, smooth. Spores spherical, yellowish brown, smooth or papillose.

 

1. Leaf apices blunt or rounded-obtuse; costa ending below the apex.................................... 2. M. schliephackei

1. Leaf apices acute or acuminate; costa percurrent or shortly excurrent............................................................. 2

2. Leaves sheathing at the base, lower margins serrulate............................................. 1. M. hornschuchiana

2. Leaves not sheathing at the base, margins entire throughout....................................................................... 3

3. Plants to 5 cm high; leaf apex gradually acute; costa percurrent to shortly excurrent; upper leaf cells with several distinct simple papillae............................................................. 3a. M. sendtneriana var. sendtneriana

3. Plants (0.5–)1–2 cm high; leaf apex abruptly acuminate; costa never excurrent; upper leaf cells with indistinct small papillae or sometimes smooth........................................ 3b. M. sendtneriana var. yunnanica