Transcript Plant Class Sp 2010/Lycopodiaceae Family Ashlyn K 7 April 2010x

Lycopodiaceae
Clubmoss Family
Lycopodiaceae
•
•
•
•
10-15 genera
350-400 species
Consists of a rhizome with adventitious roots
Small, creeping, terrestrial, vascular plants, which
lack flowers and reproduce sexually by spores. The
sporophyte consists of true roots, an aerial stem and
scale-like leaves
Lycopodium annotinum
Bristly clubmoss
-Horizontal stems grow up to 40”,
branching, creeping on ground, with
upright groups of branching stems
-Vertical stem stiff, erect; circular or
oval in cross-section; bristly with few
branches
- Leaves 1/3" long, pointing
downward
-Cones individual, slim and pointed,
yellow, 1 ½ “
Lycopodium clavatum
Running Clubmoss
• It is a spore-bearing vascular plant,
growing mainly along the ground
with stems up to 1 m long
• Stems have many branches, and
have small spirally-arranged leaves
-The horizontal stems produce roots
allowing the stem to grow indefinitely
along the ground
• Leaves are 3-5 mm long. The
branches bearing spore cones
turn erect, reaching 5-15 cm above
ground
• Cones are yellow-green, 2-3 cm long
and 5 mm broad
Lycopodium spp.
Club mosses
• Have horizontal branching
stems, both underground
and above
• These plants produce
spores in a cone like
structure at the end of the
stem. Once the spores
germinate, they develop
into a thallus which then
produce male and female
egg cells. This can take up
to twenty years to
complete.
Huperzia lucidula
Shining firmoss
• They grow 14-20 cm long,
sometimes up to 1 m long
• Leaves are 7-11 mm long,
narrow, shiny, and
evergreen. The edges are
irregularly toothed. The
sporangia (spore cases)
are in the upper leaves
• Roots of this plant grow
from a creeping,
branching, underground
rhizome
• Bright, vivid green color
Lycopodium dendroideum/hickeyi
Groundpines
• Spreads by
subterranean horizontal
stems, each upright
shoot appearing
somewhat like a small
individual tree.
• The lateral branches are
round, not flattened.
Diphasiastrum complanatum/digitatum
Northern & Wirey groundcedar
•
•
•
•
A creeping, evergreen,
rhizomatous clubmoss; has the
appearance of a miniature tree
Vertical stem
– branchlets regularly fanshaped, generally on a
horizontal plane, flat in cross
section, blade-like, their
undersides dull, pale, flat;
their uppersides green, flat,
shiny.
Horizontal stems are on or just
below the surface
Cones 2-4 per upright shoot, ½"1½" long; has elongated sterile tip
which occurs on about half the
specimens. Cone stalks are 1¾"-5"
long.
D
I
G
I
T
A
T
U
M
C
O
M
P
L
A
N
A
T
U
M
References
•
•
•
•
•
•
•
•
http://www.botany.hawaii.edu/faculty/carr/lycopodi.htm
http://www.rook.org/earl/bwca/nature/ferns/lycopodann-WIP.html
http://en.wikipedia.org/wiki/Lycopodium_clavatum
http://en.wikipedia.org/wiki/File:Lycopodium_clavatum_151207.jpg
http://cloudbridge.org/plants/lycopod-2.jpg
http://www.voyageurcountry.com/htmls/floweringplants/plants/clubmoss.html
http://upload.wikimedia.org/wikipedia/commons/thumb/7/75/Shining_firmoss.jp
g/735px-Shining_firmoss.jpg
http://www.uwgb.edu/biodiversity/herbarium/pteridophytes/lycden01.htm
• http://plants.usda.gov/java/profile?symbol=LYHI2
• http://www.ncwildflower.org/images/plants/Diphasiastrum_digitatum_pl
ant.jpg
• http://www.rook.org/earl/bwca/nature/ferns/diphasiastrumdi.html
• http://www.atlas-roslin.pl/foto/mr/mrdiphasiastrum_complanatum_s121_29.jpg