Friday, November 18, 2011

Physcomitrella patens



Name: Physcomitrella patens
Common name:  n/a
Family: Funeriaceae
Collection Date
Habitat: On moist soil, under a tree, near Chagrin River
Location: South Chagrin Reservation
Description: minute, light green moss; leaves in three ranks
 Collector: Janie Lawson

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
1b.Plants with stems and leaves, leaves equally spaced around stem…Class III Musci…2
2b. Plants not having many spreading recurved branches and leaves with two types of cells…3
3b. Plants not in reddish brown tufts…Subclass Bryidae
 
Key to Families/Genera of Bryidae pg. 28
1b. Green plants; if empty cells occur only at base, apex, or margin of leaf...3
3b. Leaves in three or more rows, but sometimes flattened...7
7b. Plants with peristome of more than 4 teeth, gemmae when present not arranged in cup...8
8b. Leaves well developed and persistant...9
9b. Plants not having sessile, inclined, asymmetric, immersed capsule ...10
10b. Plants with or without a distinct stem; capsule when presnt with an operculum; may or may not be ephemeral....17
17a. Plants minute, almost stemless; ephemeral; growing on soil…18
18a. Outer cells of capsule wall lax and thin walled…Physcomitrella

Key to Family Funeriaceae- Genus Physcomitrella

 Physcomitrella patens

Small, inconspicuous plants with immersed capsules, on alluvial soil around lakes, ponds, and streams, Quebec, Ohio, Minnesota to Missouri and South Carolina.

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