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Checklist: Graminoid Leaf and Stem Anatomy
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Identification Key (new version): Graminoid Leaf and Stem Anatomy
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Achnatherum
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Plant
habit
grass-like
aquatic & OBL wetland species
special groups
dicots
monocots
longevity
annual or biennial
perennial
Leaves
blade division
all simple
deeply lobed or divided
some or all fully compound
leaf attachment
leaf stalk (petiole) clearly present
sheathing
Flower
principal flower color
white or cream
yellow
inconspicuous
flower type
radial symmetry 5 petals
petals indistinguishable
Fruit or Cone
mature fruit dehiscence
opening along 1-2 seams
does not split open to release seed
Graminoid Traits
leaf arrangment - number of ranks
2-ranked
3-ranked
stem consistency
solid
hollow except at nodes
culm cross-section
round
angled
leaf sheath
open (split on side)
closed (not split)
ligules
absent
eciliate membrane
ciliate membrane
fringe of hairs
erose
spikelet disarticulation
breaking up at maturity (above glumes)
falling entire (below glumes)
spikelet compression
laterally compressed
dorsally compressed
subterete
awns - present/absent
awns present
awns absent
Graminoid Leaf and Stem Anatomy
Vera Markgraf and Hugo Berger
Species Count: 65
Apiaceae
Daucus pusillus
Cyperaceae
Carex ebenea
Carex kelloggii
Poaceae
Achnatherum lettermanii
Achnatherum nelsonii
Agrostis exarata
Andropogon glomeratus
Andropogon hallii
Aristida purpurea
Bothriochloa laguroides
Bouteloua barbata
Bouteloua eriopoda
Bouteloua gracilis
Bromus catharticus
Bromus ciliatus
Bromus inermis
Bromus tectorum
Chloris virgata
Danthonia californica
Danthonia intermedia
Digitaria cognata
Disakisperma dubium
Echinochloa crus-galli
Elymus elymoides
Elymus glaucus
Eragrostis mexicana
Eragrostis pectinacea
Eriocoma hymenoides
Erioneuron pilosum
Festuca saximontana
Glyceria borealis
Hesperostipa comata
Hordeum jubatum
Hordeum murinum
Jarava speciosa
Koeleria macrantha
Leymus cinereus
Melica porteri
Muhlenbergia asperifolia
Muhlenbergia microsperma
Muhlenbergia montana
Munroa squarrosa
Nassella cernua
Nassella pulchra
Nassella viridula
Panicum capillare
Pappostipa speciosa
Pascopyrum smithii
Paspalum dilatatum
Piptatheropsis micrantha
Piptochaetium pringlei
Poa fendleriana
Poa reflexa
Polypogon monspeliensis
Pseudoroegneria spicata
Puccinellia distans
Schizachyrium scoparium
Setaria viridis
Sporobolus airoides
Sporobolus contractus
Sporobolus cryptandrus
Thinopyrum intermedium
Tridens muticus
Trisetum spicatum
Vulpia octoflora