Specimen #2: Marchantia sp.

Marchantia sp. 

Figure 1. Marchantia with gemmae

 Figure 2. Pegged rhizoids of Marchantia

Figure 3. Pore of Marchantia

Figure 4. Air pores of Marchantia sp.

Phylum: Marchantiophyta

Family: Marchantiales

Genera: Marchantia sp.

Collection date: 10/10/2015

Collector: Caroline Kaylor Georskey

Habitat: This specimen was found in a silty and shady sidealk crack on the Hiram College Campus.
Description: This thalloid liverwort was found with gemmae splash cups (fig. 1). Under the microscope, pegged rhizoids and pores are apparent (fig. 2&3). 

Key used: Conrad, H. S. (1956). How to know the mosses and liverworts. Dubuque, Ia: WM. C. Brown Company Publishers.  

p. 22

1b Plants scale-like or ribbon-like, usually fork-branched and flat on the substrate, often in rosettes, without distinction of stem and leaf; green or purplish...

3b. Cells with numerous small chloroplasts. sporophyte a globular or slightly elongate capuse with or without a fragile watery stalk, lasting only a few days...

Hepaticae p. 156

1a. Plants growing flat, scale-like or ribbon-like, usually fork-branched, without distinction of stem and leaf, green or purplish...

2a. Plants opaque by reasons of air-space inside of it, often showing air-pores and polygonal markings. Rhizoids with pegs on the inside of the walls...

8a. Air pores visible without a lens, each in a polygonal area. Capsules borne on the under side of an umbrella-shaped receptacle, with spirally banded elaters among the spores. Wall cells of capsules with ring-shaped thickenings...

Marchantiaceae p. 158

9a. With open cups or half-cups of dis-shaped gemmae on the thallus...

10a Gemma cups round, fringed; female umbrellas 9-lobed; thallus with think scales along the margins beneath; air pores elliptic...

Genus Marchantia

For more information on Marchantia please review the following links:
http://www.vcbio.science.ru.nl/en/virtuallessons/hepatophyta/
http://2014.igem.org/Team:Cambridge-JIC/Marchantia/Background