Mammoth Cave Area Flora
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SPRING Yellow-Orange Fls
SPRING Blue/purple fls
SPRING White Flowers
SUM-Fall blue, purple
SUM-FALL yel. orange
SUM-FALL white fls
ALL Red, pink fls
ALL Other colored fls
Invasive species
Families and Common names
Family Traits
Group ID guides
Agrimony
Asters
Blazing stars
Goldenrods
Knotweeds & smartweeds
Ruellia
St John's Wort
Sunflowers and similar
Tick-trefoils
Violets
Canadian bluets
(Houstonia canadensis)
aka fringed bluets. A small, narrow-leaved species found in prairie patches and along dry roadsides. This is our only
Houstonia
species with basal leaves present at flowering time. Basal leaves are hairy. MC (Rubiaceae)