field botany – lecture 07 dr. donald p. althoff
DESCRIPTION
LEC 07. Families – Part III Monocots w/ Non-Showy Flowers. FIELD BOTANY – Lecture 07 Dr. Donald P. Althoff. Set III – all __________. Grass family Sedge family Rush family Cattail family Arrowhead family Water Nymph family Pondweed family Duckweed family. Grass Family -- Poaceae. - PowerPoint PPT PresentationTRANSCRIPT
FIELD BOTANY – Lecture 07Dr. Donald P. Althoff
LEC 07
Families – Part IIIMonocots w/ Non-
Showy Flowers
Set III – all __________• Grass family• Sedge family• Rush family• Cattail family• Arrowhead family• Water Nymph family• Pondweed family• Duckweed family
Grass Family -- Poaceae
• Older family designation is Gramineae…which leads to the term _____________
• Graminoids = grasses and sedges and rushes (think narrow blades/leaves)
• Most are herbaceous but some woody (think bamboo)
• They _____ showy petals and sepals because they are _______________
• grass plants maintain 3 defining characteristics from other members of the plant kingdom:
petal-less flowers emerge between the bracts on leaf-less stems
leaves on grass plants take on a flat form and stretch out long and slender. At the stem, these leaves cling tightly and form a type of sheath.
the round stems remain hollow in the center. Thenodes, or joints, along the stem also appear swollen.
Grass Family
1
2
3
Sedge Family
• TAXONICALLY: ____________ perennial graminoids (herbs and
forbs)• Species include: fox
sedgeGray’s sedge lake (hairy) sedgepalm (Muskingum) sedge
yellownut sedge
Sedge Family stem pattern
• _____…usually. Results in __________ stem • Stem is ______ (vs. grass which is hollow)• ___________sheath (vs. grass which is open)
Sedge Family stem pattern
• _____ “lumpy nodes” (vs. grasses) • _____ lack edges; example with
round stems is Scripus sp.……aka bulrushes..but some
panicled bulrush
Sedge Family key then…
• Sedges have ______ but grasseshave ______
• And look for “_____” stems
Squarrose sedge(Carex squarrosa)“squarrosa” is Latin for scruffy ...not 4-sided
Rush Family
• TAXONICALLY: ___________perennial graminoids (herbs and forbs)
• Species include:slender rushflatleaved rushalpine rushpoverty rushslimpod rushcommon rush
Rush Family patterns
• _______ stems. • Stem is ____ (vs. grass
which is hollow)• Flowers:
like ____… __ sepals __ petals __-parted stigma __-chambered ovary __-stamens (usually)
top down – cross-section
view
Rush Family why lily like?
• The __ sepals, __ petals, 6 stamens pattern
• The difference, though: rush flowers are ______ and ______
Cattail Family
• TAXONICALLY: _____________perennial herbs and forbs
• ____ a graminoid representative !• Species include:
broadleaf cattail (OH)narrow leaf cattail (OH)
southern cattail (not OH)
Cattail Family
• ____ leaves & “_________________” appearance• Male & female
parts _____ flower—they wither after releasing pollen
_______ flower—this portion matures into familiar “cattail”
Arrowhead Family
• TAXONICALLY: ________________perennial herbs and forbs
• _________ species!• Species include:
arrowheadwater plantain
burhead
Arrowhead Family
• __ white petals• __ green sepals
1
3
3
1
1
1
Arrowhead Family
• __ or more simple pistils• ____ or more stamens
Arrowhead Family
• Leaves ______________• Leaves are _____• Considered a very
“__________” monocot
Water Nymph Family
• TAXONICALLY: _____________perennial herbs and forbs
• _______ species! __________ submerged• Species include:
brittle water-nymphwater nymph
Water Nymph Family
• Male (__________) and female (__________) flowers
• Leaves are _____ and ________• Leaf base: stipules or sheathed
Pondweed Family
• TAXONICALLY: _________________perennial herbs and forbs
• _______species species! Fresh & Saltwater spp.• ________ and _________ leaves• Species include:
pondweed xeel grass
ditch grass
Pondweed Family
• ___ pistils• __ stamens• _________= where sepals and
petals indistinguishable 1
2
3
4
eel
grass
Duckweed Family
• TAXONICALLY: ______________perennial herbs and forbs
• __________ species• Includes world’s smallest flowering plant• Species include:
common duckweedgreater duckweedbogmatwater meal
Duckweed Family
• Leaves & flowers “______”
• Roots “_____” from floating plant
Duckweed Family
• Eaten by many bird and mammal species
• Easily “__________” as whole plants