Specimen #13   Marchantia polymorpha, Common Liverwort

 Figure 1: Showing close up image of the liverwort.

Figure 2: Showing a leaf of the liverwort and how thin the leaves are around the edges.

 

 

 

 

 

 

 

 

 

 

-          Name: Marchantia polymorpha

-          Common Name: Common Liverwort

-          Family: Marchantiacea

-          Collection Date: September 22, 2016

-          Habitat: Cliffside rock near a water source (river)

-          Location: South Chagrin Nature Reserve

-          Description: thallose-like liverwort, not sexual structures present

-          Keying Guide: How to Know the Mosses and Liverworts by Henry S. Conard

-          Intro Key: Class II—The Liverworts p. 239 1A Air pores visible without lens, each in a polygonal area, capsules borne on the underside of an umbrella-shaped receptacle, with spirally banned elaters among spores, walls of capsules with ring-shaped thickenings….8; 8A Thalli with open or half-cups of dish-shaped gemmae on the thallus, archegonia (and sporophytes) on the underside of long-fingered umbrellas with 4-9 fingers….9; 9A Gemmae cups round, fringed, female umbrellas 9-lobed, thalli with thin scales along the margin beneath, air pores eliptic…. P. 284 Marchantia; 1A Thallus about 1cm wide, without sclerenchyatous cells, gemmae cups with surface papillae, ventral scales in 6 or more rows…. Marchantia polymorpha