Bryophyte Flora of North America

 

Characters or Character Groups and Sequence for Hepatics and Anthocerotes

Modified from "FNA Bryophyte Character Lists" (March 1993) on September 2014.

Note: Put all characters of one major organ in one sentence,

using semicolons to separate items.

NOTE: Do not cite chromosome numbers.

Lists of characters/character groups are available for the following groups:

HEPATICS

Leafy Hepatics

Simple Thalloid Hepatics

Complex Thalloid Hepatics

ANTHOCEROTES

HEPATICS

Leafy Hepatics

GAMETOPHYTE

Plants (gametophores)

dimensions (length x width)

habit (growth form)

color

female/male dimorphism

Stems

size (diameter)

branching types

;

transverse section features

epidermis

cortex

central strand

;

paraphyllia

;

rhizoids

position

color

morphology

Lateral Leaves

insertion

incubous

succubous

transverse

spacing

stature when dry (habit, set and curvature)

stature when wet (habit, set and curvature)

shape

dimensions (length x width) (length/width)

form (divided/entire)

;

lobe(s) (describe the following for each type of lobe if lobes are dimorphic)  (describe dorsal lobe first)

shape

dimensions (length x width)

contour

apex

base

margins

;

cells (describe the following for marginal, median and basal cells, if differentiated)

shape

dimensions (length x width)

surface features (smooth, papillate, verrucose, etc.)

wall thickness

trigones and intermediate thickenings

;

oil bodies (distribution, number, shape, surface, and color)

Ventral Leaves (Underleaves)

number per pair of lateral leaves

insertion

spacing

distant

contiguous

imbricate

contour (e.g., concave, convex)

shape

dimensions (length/width)

form (divided or entire; if divided describe shape, size, contour, apex, base, margins for each lobe, or type of lobe, and shape of sinus between lobes)

;

cells (describe the following for marginal, median and basal cells, if differentiated)

shape

dimensions (length x width)

surface features (smooth, papillate, verrucose, etc.)

wall thickness

trigones and intermediate thickenings

;

oil bodies (distribution, number, shape, surface, and color)

Asexual reproduction

presence/absence, frequency

type of propagules

position

associated stem/leaf modification

color of propagules

shape of propagules

size of propagules

number of cells

wall features

Sexual condition [= "Sexuality", e.g., autoicous, dioicous, etc.]

Androecia

position

shape

bracts (perigonial leaves)

number per androecium

shape

dimensions (length x width)

bracteole(s) (perigonial underleaves)

number per androecium

shape

dimensions (length x width)

antheridium (-a)

number

color

jacket cell arrangement

number of cell rows in stalk

Gynoecia

position

innovation(s)

branch type

conditions of development (e.g., "only with unfertilized gynoecia", etc)

number per gynoecium

;

bracts (perichaetial leaves)

number

shape

dimensions (length x width)

connation

;

bracteole(s) (perichaetial underleaves)

number

shape

dimensions (length x width)

adnation

;

leaf-derived protective structure (perianth)

exertion

shape

dimensions (length x width)

degree of fusion or parts

lobing

surface ornamentation

mouth

thickness (in cell layers)

;

stem-derived protective structure (shoot calyptra, perigynium, etc.)

shape

dimensions (length x width)

associated appendages

number of archegonia

number of archegonia

SPOROPHYTES

Foot

shape

dimensions (length x width)

collar

Seta

length

articulate/not-articulate

transverse section features (number of rows of cells in outer layer, number of cells in interior

Capsule

shape

dehiscence

number of wall layers

wall thickenings (describe for each differentiated layer)

position of thickenings

color

Elaters

attachment

shape

dimensions (length x width)

spiral(s)

number

color

Spores

shape and polarity

dimensions (length x width)

ornamentation

color

germination (precocious/not precocious)

 


 


Simple Thalloid Hepatics

GAMETOPHYTE

Plants (gametophores)

form (laminal thalloid or dissected thalloid)

dimensions (length x width)

habit

color

female/male dimorphism

Thalli (laminal thalloid forms)

length/width

midrib

margins

thallus thickness

anatomy (conducting strand)

;

rhizoids

position

color

morphology

;

slime papillae/appendages

Thalli (dissected thalloid forms)

Stems

size (diameter)

transverse section features

epidermis

cortex

central strand

;

rhizoids

position

color

morphology

Lobes/Lobules (describe the following for each type of lobe if lobes are dimorphic)

insertion

incubous

succubous

transverse

longitudinal

spacing

stature when dry (habit, set and curvature)

stature when wet (habit, set and curvature)

thickness (number of cell layers)

shape

dimensions (length x width) (length/width)

contour

apex

base

margins

;

cells (describe the following for marginal, median and basal cells, if differentiated)

shape

dimensions (length x width)

surface features (smooth, papillate, verrucose, etc.)

wall thickness

trigones and intermediate thickenings

;

oil bodies (distribution, number, shape, surface, and color)

Specialized asexual reproduction

presence/absence, frequency

type of propagules

position

associated stem/leaf modification

color of propagules

shape of propagules

size of propagules

number of cells

wall features

Sexual condition [= "Sexuality"]

Androecia

position

shape

scale(s)

number per androecium

shape

dimensions (length x width)

antheridia

number

color

jacket cell arrangement

number of cell rows in stalk

Gynoecia

position

thallus-derived protective structures (e.g., pseudoperianth/involucre)

number

shape

dimensions (length x width)

thickness

lobing

surface ornamentation

mouth

archegonial/thallus derived protective structures (e.g., shoot calyptra)

shape

dimensions (length x width)

thickness

surface features

associated appendages

number of archegonia

SPOROPHYTES

Foot

shape

dimensions (length x width)

collar

Seta

length

articulate/not-articulate

transverse section features (number of rows of cells in outer layer, number of cells in interior

Capsule

shape

dehiscence

number of wall layers

wall thickenings (describe for each differentiated layer)

position of thickenings

color

Elaters

attachment

shape

dimensions (length x width)

spiral(s)

number

color

Spores

shape and polarity

dimensions (length x width)

ornamentation

color

germination (precocious/not precocious)

Include as first sentence in ecology and range or distribution statement:

Months or season when capsules mature, or when mature spores are present


MARCHANTIIDAE

GAMETOPHYTE

Plants (gametophores)

dimensions (length x width)

habit

color

female/male dimorphism

Thalli

length/width

stature when dry

stature when wet

areolation

dorsal groove

median band

margins

thallus thickness

thallus anatomy (upper to lower surface)

;

upper epidermal cells

shape

dimensions (length x width)

wall thickness

trigones and intermediate thickenings

oil cells

pores

position

structure

;

internal air chambers

photosynthetic tissue

shape

dimensions (length x width)

wall thickness

trigones and intermediate thickenings

oil cells

;

lower epidermis

rhizoids

position

color

morphology

;

ventral scales

number of rows

shape

dimensions (length x width)

color

margins

appendages

oil cells

Specialized asexual reproduction

presence/absence, frequency

type of propagules

position

associated stem/leaf modification

color of propagules

shape of propagules

size of propagules

number of cells

length and width

wall features

Sexual condition [= "Sexuality"]

 

Androecia

position

shape

color

receptacle

shape

dimensions (length x width)

margin

lobe number (if lobed)

lobe shape (if lobed)

surface ornamentation

antheridiophore

length

rhizoid furrows

appendages

antheridia

position

number

color

involucre

color

length

Gynoecia

position

shape

color

receptacle

shape

dimensions (length x width)

margins

lobe number (if lobed)

lobe shape (if lobed)

surface ornamentation

archegoniophore

length

rhizoid furrows

appendages

archegonia

position

number

pseudoperianth

involucre

color

length

 

SPOROPHYTES

Foot

shape

dimensions (length x width)

collar

Seta

length

articulate/not-articulate

transverse section features (number of cell rows in outer layer, number of cells in interior)

Capsule

shape

color

number of valves

dehiscence

Elaters

attachment

shape

dimensions (length x width)

spiral(s)

number

color

Spores

form (e.g., monads, diads, tetrads)

shape and polarity

dimensions (diameter, or length x width)

ornamentation

color germination (precocious/not precocious)

Include as first sentence in ecology and range or distribution statement:

Months or season when capsules mature, or when mature spores are present


ANTHOCEROTES

GAMETOPHYTE

Plants (gametophores)

dimensions (length x width)

habit

color

female/male dimorphism

Thalli

length/width

midrib

margins

thallus thickness

anatomy (mucilage cavities)

rhizoids

position

color

morphology

slime papillae/appendages

Sexual condition [= "Sexuality"]

Androecia

position

shape

antheridia

number

color

jacket cell arrangement

number of cell rows in stalk

Gynoecia

position

archegonia

thallus derived protective structur3e (involucre)

SPOROPHYTE

Foot

shape

size

 

Capsules

shape

size

number or presence/absence) of valves

dehiscence

number of wall layers

stomates

columellae

Pseudoelaters

size

shape

Spores

color

shape and polarity

diameter

triradiate ridge

ornamentation (distal face, proximal face)

END