17. Hyophila Brid.   湿地藓属 shi-di xian shu

Bryol. Univ. 1: 760. 1827.

 

Plants small, to 10 mm high, green above, red to reddish brown or dark green below, in dense tufts. Stems erect, simple, rarely branched; central strand present or absent. Leaves usually rosulate, incurved or contorted when dry, oblong-elliptic to oblong-spatulate or oblong-lanceolate to lanceo-ligulate, blunt to rounded-obtuse or weakly apiculate at the apex; margins entire or serrulate; costa stout, percurrent to shortly excurrent; upper leaf cells small, quadrate to rounded-hexagonal, smooth or papillose; basal cells rectangular, smooth, hyaline. Dioicous or autoicous. Perichaetial leaves smaller than or similar to stem leaves. Setae elongate, straight; capsules erect, oblong-cylindrical; annuli differentiated, deciduous; peristome absent; opercula conic-rostrate, usually with long oblique beak. Calyptrae cucullate, smooth. Spores spherical, small, smooth.

 

1. Upper leaf margins serrulate to serrate................................................................................................................. 2

1. Upper leaf margins entire....................................................................................................................................... 3

2. Leaves oblong to oblong-spatulate, upper margins serrate; cells not papillose or slightly mammillose on the ventral surface.............................................................................................................. 1. H. involuta

2. Leaves ovate-ligulate, upper margins serrulate; cells mammillose on both surfaces......................... 4. H. propapgulifera

3. Leaf cells smooth.................................................................................................................................................... 4

3. Leaf cells mammillose to highly mammillose or papillose................................................................................ 5

4. Leaves oblong-elliptic, incurved when dry; upper leaf cells very thick-walled................... 2. H. javanica

4. Leaves spatulate, more or less plane when dry; upper leaf cells thin-walled................... 6. H. spathulata

5. Leaves oblong-elliptic, upper margins plane; upper leaf cells highly mammillose to papillose; gemmae global; dioicous.......................................................................................................................... 3. H. nymaniana

5. Leaves oblong-lanceolate to lanceo-ligulate, upper margins incurved; upper leaf cells mammillose on both surfaces; gemmae absent; autoicous..................................................................................... 5. H. setschwanica