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| Fig. 1 Grimmia apocarpa next to a quarter. |
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| Fig. 2 Grimmia apocarpa capsule with orange peristome teeth. |
Name: Schistidium crassipilum
Family: Grimmiaceae
Family: Grimmiaceae
Collection Date: Oct.16, 2011
Habitat: damp rock
Location: South Chagrin Reservation, Ohio
Description: Branched, erect, dark-green to black in color; bright red capsule seated in a nest of leaves, lacking a visible seta.
Collector: Jennifer Friedler
Collector: Jennifer Friedler
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. has stem and leaves; erect, ascending, prostrate, or hanging...2
2b. No hayline cells...3
3b. Green...pg. 28. Order Bryidae
Key to Families/Genera Bryidae pg. 28
1b. Green, one layer of cells...3
3b. Leaves in three or more rows...7
7b. No isodiometeric cells...8
8b. Leaves well developed and persistent...9
9b. Has a seta...10
10b. Distinct stem; has operculum...17
17b. Large plant...20
20b. No lamellae...28
28b. Not growing on rich organic soil, bones, or other organic matter...33
33a. Stems erect, tufted, sporophytes terminal...34
34b. No hyaline alar cells...36
36b. Cells smooth...83
83b. Plants growing on rock...85
85b. Larger mosses, stems > 4mm...91
91b stems in five ranks, stem not triangular with outer cells thin walled and colorless...92
92b. Leaves 1-5:1 length...111
111a. Leaves dense and blackish...112
112b. Walls of cells smooth...113
113b. Leaves without rhizoids...114
114b. Leaves imbricate when dry, ovate to linear-lanceolate, margins plane to narrowly recurved...pg 105 Grimmia
Key to Genus Grimmia pg. 105
1a. upper leaves without whitish hair points...2
2b. apex of most leaves acuminate or acute...3
3b. leaves1.5-3mm long...4
4b. on inland rocks...5
5a. most leaves acuminate from ovate base, capsule oblong, peristome orange...Grimmia apocarpa
“Plants in dense, dark green or brownish tufts, 1-3.5mm high on rocks, usually in dry , exposed places throughout most of North America (not Florida)” (Conrad 106).
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