Figure 1: Detail of Rhacomitrium heterostichum
Name: Rhacomitrium heterostichum
Family: Grimmiaceae
Collection Date: September 13, 2011
Habitat: Towards the bottom of tree trunk of a cool, shaded area
Location: South Chargrin Reservation
Description: Small, green leaves arranged spirally around stem. Small sporophytes, green or brown capsules lifted by reddish seta.
Collector: Jamie Frost
Key used: Conard, H.S. and P.L. Redfearn, Jr. 1979. How to Know the Mosses and Liverworts 2nd Edition, McGraw-Hill, Boston, Mass.
Collector: Jamie Frost
Key used: Conard, H.S. and P.L. Redfearn, Jr. 1979. How to Know the Mosses and Liverworts 2nd Edition, McGraw-Hill, Boston, Mass.
Introduction Key pg. 19
1a. Plants with stems and leaves; leaves equally spaced around the stem.... leaf cells isodiametric..... 2
2b. Plants not as above (not of Subclass 1. Sphagnidae).... 3
3b. Plants not as above (not of Subclass 2. Andreaeidae)... pg 28 Subclass Bryidae
Key to Families/Genera of Bryidaes pg. 28
1b. Green plants.... 3
3b. Leaves inserted in three or more rows though plants sometimes strongly flattened thus appearing in two rows.....7
7b. Leaves well developed and persistent.... 9
9b. Capsule and leaves not as above (not Diphyscium).... 10
10b. Plants with distinct stem; capsule when present with an operculum... 17
17b. Plants minute to large; capsules... exserted.... growing on...trees.... 20
20b. Leaves without filiform green photosynthetic outgrowths.... 28
28b. Plants not growing on rich organic soil, dung, bones, or other organic matter of animal origin.... 33
33a. Stems erect... generally in tufts... 34
34b. Leaves, especially the bases, not as above.... 36
36a. Leaf cells... bulging mammilose.... 37
37b. Leaf cells striolate.... 43
43b. Alar cells not enlarged and cleary differentiated.... 45
45a. Stems repeatedly branching, appearing... pleuricarpous; sporophytes borne at intervals.... 46
46a. Cells of leaf narrow with extremely wavy walls.... pg 110 Rhacomitrium
Key to Family Grimmiaceae - Genus Rhacomitrium
1b. Leaves with hyaline hair points.... 3
3a. Leaf cells smooth.... 4
4a. Hyaline hair point smooth to merely toothed.... Rhacomitrium heterostichum
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