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Polytrichales

3-332.11.00
3-332.13.00: PolytrichalesClades: Bryopsida; Algae; Cryptogamae; Viridiplantae; Plants.
IntroductionPolytrichales is a Order in Bryopsida.
Families: Oedipodiaceae, Polytrichaceae.
Botany: Protonema short-lived or persistent. Subterranean root-like “rhizome”. Central strand of hydroids and leptoids Costa complex (Polytrichum-type), often broad, with adaxial lamellae Dioicous, rarely autoicous. Perigonia often conspicuous (splash cups). Seta present. Capsule erect to horizontal, rounded or 2-4-angled; stomata present. Peristome of 16, 32 or 64 teeth, Capsule with epiphragm. Spores small (up to 60x106 per capsule). Calyptra mitrate or cucullate, hairy to glabrous often covering the capsule. Largest terrestrial mosses.

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