19. Warnstorfia Loeske 范氏藓属 fan shi xian shu
Hedwigia 46: 310. 1907. Drepanocladus sect. Warnstorfia (Loeske) Broth., Nat. Pflanzenfam. I(3): 1034. 1908. Drepanocladus subgen. Warnstorfia (Loeske) Tuom., Ann. Bot. Soc. Zool.-Bot. Fenn. “Vanamo” 23: 10. 1949.
Plants medium-sized or rather large, green, yellowish green, or reddish brown, in loose mats. Stems prostrate or ascending, regularly or nearly pinnately branched; round in cross section, cortical cells thick-walled, small, in 1–4 layers; central strand weakly differentiated; pseudoparaphyllia foliose. Stem and branch leaves similar, erect to falcate-secund, polymorphous, ovate-lanceolate, long acuminate at apex; margins serrulate; costae single, ca. 2/3–3/4 the leaf length or subpercurrent to shortly excurrent; median leaf cells linear, curved; numerous apical cells differentiated, shorter, broader, hyaline; alar cells quadrate or rectangular, inflated, arranged in a single row extending close to costa at leaf base, sometimes auriculate. Dioicous or autoicous. Inner perichaetial leaves ovate-lanceolate; costae single. Setae reddish brown, curved; capsules horizontal, elongate-ellipsoidal; exothecial cells quadrate to rectangular, somewhat incrassate; cilia 2–3, as long as the segments, nodulose. Spores densely papillose.