Bryophytes (Mosses, Liverworts, and Hornworts) • Earth.com

Aongstroem'S Sphagnum

(Sphagnum aongstroemii)

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Description

Plants medium-sized, brownish green to yellowish brown tinged with blue, in dense tufts. Stem cortex in 3-5 layers, hyaline cells thin-walled, without fibrils; central cylinder yellowish brown. Stem leaves 1.0-1.4 mm - 0.6-0.8 mm, ligulate, flat, broader at base, narrowed from the middle of leaves, rounded and slightly lacerate at the apex; borders differentiated, narrow above the middle, clearly widened below the middle, ca. 1/3 leaf width at base; hyaline cells divided in the upper parts of leaves, without fibrils and pores. Branches in fascicles of 3-5. Branch leaves ca. 1.5 mm - 1.0 mm, imbricate, loosely arranged, broadly ovate with broad, blunt and dentate apex, margins slightly involute; borders consisting of 1-3 rows of linear cells; hyaline cells linear-rhomboidal, with small, short-elliptic, ringed pores at the ends and at corners on the dorsal surface, pores enlarged near the leaf base; with a few medium-sized ringed pores in cell ends in the upper parts of leaves on the ventral surface, few to none near the base; green cells in cross section elliptic, centrally located, equally exposed on both surfaces. Dioicous. Spores deep brownish, papillose.

Taxonomic tree:

Domain:
Kingdom: Plantae
Phylum: Bryophyta
Class: Sphagnopsida
Order:Sphagnales
Family:Sphagnaceae
Genus:Sphagnum
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