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Checklist: Idaho Spring Flora - List 4
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Identification Key (new version): Idaho Spring Flora - List 4
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Achillea
Antennaria
Artemisia
Asteraceae
Balsamorhiza
Chrysothamnus
Cirsium
Crepis
Ericameria
Erigeron
Hydrangeaceae
Philadelphus
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Taraxacum
Tetradymia
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Plant
habit
shrubs
herbaceous
longevity
annual or biennial
perennial
sap
latex absent (sap clear)
latex present
leaves/twigs aromatic when crushed
without marked odor
clearly odiferous
Leaves
blade division
all simple
deeply lobed or divided
leaf attachment
sessile or nearly so
leaf stalk (petiole) clearly present
winged petiolate
leaf (leaflet) margin
entire
toothed
lobed
Inflorescence
type
solitary
spike
raceme
corymb
head/capitate/glomerules
panicle
cymose
Flower
principal flower color
white or cream
purple
blue
green
yellow
red
pink
brown
inconspicuous
corolla (petal) fusion
petals separate
fused, at least toward base
corolla symmetry
regular
bilateral
number of fertile stamens
5
7 or more
Fruit or Cone
mature fruit dehiscence
opening along 3 to many seams
does not split open to release seed
Composite Traits
head type
discoid (disk only)
radiate (rays and disks)
all ligulate
Idaho Spring Flora - List 4
Rick Williams
Species Count: 21
Asteraceae
Achillea millefolium
Antennaria dimorpha
Artemisia dracunculus
Artemisia ludoviciana
Artemisia tridentata
Artemisia tripartita
Balsamorhiza hookeri
Balsamorhiza macrophylla
Balsamorhiza sagittata
Chrysothamnus viscidiflorus
Cirsium arvense
Cirsium scariosum
Cirsium vulgare
Crepis acuminata
Ericameria nauseosa
Erigeron speciosus
Senecio integerrimus
Taraxacum officinale
Tetradymia canescens
Wyethia amplexicaulis
Hydrangeaceae
Philadelphus lewisii
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