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Plant
habit
shrubs
herbaceous
aquatic & OBL wetland species
Leaves
arrangement/phyllotaxy
alternate
opposite
whorled
leaf attachment
sessile or nearly so
leaf stalk (petiole) clearly present
leaf (leaflet) margin
entire
revolute
leaf(let) base
attenuate
clasping
cordate
cuneate
obtuse
rounded
truncate
broadest point of leaf (leaflet)
broadest at middle
broadest below middle
Inflorescence
type
solitary
panicle
cymose
Flower
principal flower color
white or cream
purple
green
yellow
orange
red
pink
brown
corolla (petal) fusion
petals separate
fused, at least toward base
Stem & Twigs
succulent vs non-succulent
succulent
not succulent
Asclepias of Arizona
Nabhan, Buckley, and Fishbein
Species Count: 31
Apocynaceae
Asclepias albicans
Asclepias angustifolia
Asclepias asperula
Asclepias brachystephana
Asclepias cryptoceras
Asclepias cutleri
Asclepias elata
Asclepias engelmanniana
Asclepias erosa
Asclepias hallii
Asclepias hypoleuca
Asclepias incarnata
Asclepias involucrata
Asclepias latifolia
Asclepias lemmonii
Asclepias linaria
Asclepias macrosperma
Asclepias macrotis
Asclepias nummularia
Asclepias nyctaginifolia
Asclepias oenotheroides
Asclepias quinquedentata
Asclepias rusbyi
Asclepias sanjuanensis
Asclepias speciosa
Asclepias subulata
Asclepias subverticillata
Asclepias tuberosa
Asclepias uncialis
Asclepias viridiflora
Asclepias welshii