Thursday, November 17, 2011

Specimen #9 Moss




Figure 1: Gametophyte & sporophyte of Hypnum cupressiforme




Name: Hypnum cupressiforme
Family:  Hypnaceae
Collection Date:  September 13, 2011
Habitat: Found among forest floor on dirt.
Location: South Chargrin Reservation
Description: Branching moss, green in color.  Leaves lack papillae and costa. Leaves very small, sporophytes persistent.
Collector: Jamie Frost


Key used: Conard, H.S, 1956. How to Know the Mosses and Liverworts Revised Edition, WM. C. Brown Company Publishers, Dubuque, Iowa.


Introduction Key pg. 22
1a. Plants with stem and leaves; erect, ascending..... 2
2a. Leaves equally spaced all around the stem, without midrib; margins entire; cells elongate. Sporophyte persisting for weeks or months. Class Musci.... pg. 23


Key to Musci pg. 23
1c.All the common mosses. Leaf cells in one layer.  Capsule opening by a operculum. Eubrya.... 9
9b. Stems creeping and branching.  Sporophyte borne on a very short branch, subtended by perichaetial leaves that are different from those of other branches. Pleurocarpi.... pg. 97

Key to Pleurocarpi pg. 97
1b. Leaves not at all papillose; more or less glossy... 34
34b. Paraphyllia few or none, usually not seen.... 41
41c. Midrib lacking... 95
95b. Terrestrial; xeric, mesic or hydric, not constantly submerged... 98
98b. Median leaf cells 5-20:1, that is, long to very long... 106
106c. With small quadrate alar cells... 128
128b. Leaves complanate... 130
130b. Leaves curved downward or backward.... 132
132a. Shoots flat, the leaves both complanate and falcate. Genus Hypnum... See 118b
118b. Leaves falcate-secund. Genus Hypnum.. 119
119a. Outer cells small and thick walled... 121
121b. Margins plane or more or less reflexed... 122
122b. Branching less precise to irregular... 123
123b. Not exactly as above... 124
124b. Leaves not cordate at base... 126
126a. Leaves entired; alar cells numerous, opaque.... Hypnum cupressiforme

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