Figure 1: Platygyrium growing under a tree
Figure 2: Close up of the arrangement of leaves
Figure 3: An individual leaf
Name: Platygyrium repens
Family: Hypnaceae
Common Name: Platydictya moss
Family: Hypnaceae
Common Name: Platydictya moss
Collection Date: September 14, 2011
Habitat: Growing in the soil underneath a tree
Location: The South Chagrin Reservation
Description: "Plants in flat, dark-, yellowish-, golden-, or brownish-green, glossy mats, branches ascending, usually bearing clusters of minute gemmae, capsules erect and symmetric, on logs, tree trunks, rocks, throughout eastern North America (Conrad and Redfearn, 1979)."
Collector: Kelcie Cuckler
Collector: Kelcie Cuckler
Key used: Conard, H.S. and P.L. Redfearn, Jr. 1979. How to Know the Mosses and Liverworts 2nd Edition, McGraw-Hill, Boston, Mass.
Keying Steps:
Introduction Key pg. 19
1a. Plant with stems and leaves,.. rhizoids multicellular,.. no elaters in capsule.. 2
2b. Plants not sphagnidae.. 3
3b. Plants not andreaeidae.. p.28 subclass bryidae
Key to Genera/Species
1b. Green, brown, yellow plants.. not in 2 or 3 layers.. 3
3b. Leaves inserted in 3 or more rows.. 7
7b. Plants with a peristome of more than 4 teeth.. 8
8b. Leaves well developed and persistent.. 9
9b. Capsule and leaves not as above.. 10
10b. Plants without a distinct stem, capsule with operculum.. 17
17b. Plants minute to large, capsules minute to exerted.. 20
20b. Leaves without photosynthetic outgrowths.. 28
28b. Plants don't only grow on organic matter.. peristome single or double.. 33
33b. Stems creeping or ascending, usually extensively branched, in interwoven mats.. 139
139b. Leaves smooth; more or less glossy.. 174
174b. Paraphyllia or multicellular propagula few or none, usually not seen, if numerous, then plants complanate.. 182
182b. Costa single and strong to short and/or double to absent.. 183
183b. Costa single, reaching the middle of the leaf or beyond to lacking, or short and/or double..184
184b. Costa lacking, or short and/or double.. 230
184b. Costa lacking, or short and/or double.. 230
230b. Plants terrestrial.., not in areas where subject to long periods of submergence in flowing water or growing in water.. 231
231b. Median leaf cells long to very long.. 239
239a. Leaves with one inflated cell at extreme basal angle, and many quadrate cells; tips of shoots crowded with gemmae.. (p.209) Platygyrium repens
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