Rudbeckia laciniata var. ampla
in C. L. Hitchcock et al., Vasc. Pl. Pacif. N.W. 5: 280. 1955.
Common names: Rocky Mountain cutleaf coneflower
Endemic
Basionym: Rudbeckia ampla A. Nelson Bull. Torrey Bot. Club 28: 234. 1901
Treatment appears in FNA Volume 21. Treatment on page 49.
Leaves: basal 20–50 × 10–25 cm, blades pinnately compound to pinnatifid (basal leaflets or lobes often pinnatifid); proximal and mid cauline blades 5–9-lobed; adaxial faces glabrous or sparsely hairy (hairs arching, 1-seriate). Receptacles ovoid; paleae 4.5–6.5 mm. Ray laminae 25–50 × 7–12 mm. Discs (17–) 20–30 × 12–20 mm. Cypselae 4–5.5 mm; pappi mostly longer than 0.7 mm. 2n = 38.
Phenology: Flowering summer–fall.
Habitat: Wet sites, along streams, open meadows
Elevation: 1700–2700 m
Distribution
B.C., Ariz., Colo., Mont., N.Mex., S.Dak., Wyo.
Discussion
Variety ampla grows west of the Great Plains. It is introduced in British Columbia.
Selected References
None.
Lower Taxa
None.
... more about "Rudbeckia laciniata var. ampla"
hairy +
introrse +
connate +
herbaceous +
hairy +
acute;rounded +
scarious +
absent +
hirsute +
papillate +
corymbiform +
continuous +
petiolate +
compound +
pinnatifid +
winged;ribbed;winged;ribbed +
1;15 +
1mm;1.5mm +
proximal +
2/3;4/5 +
stigmatic +
absent +
Rocky Mountain cutleaf coneflower +
tipped +
monomorphic +
dimorphic +
4mm;5.5mm +
staminate +
12mm;20mm +
compound +
1-2-pinnatifid +
straight +
distinct +
proximal +
1;5 +
bisexual +
dispersed +
singly +
discoid +
indeterminate +
surrounding +
fusiform;turbinate or broadly campanulate +
15mm;50mm +
hairy +
4mm;14mm +
opposite +
green +
cauline +
glaucous +
2-carpellate +
inferior +
attached +
anatropous +
persistent +
longer +
falling +
absent +
0.7 cm7 mm <br />0.007 m <br /> (?) +
tough +
thick +
absent +
connate +
persistent +
distinct +
falling +
unequal +
in C. L. Hitchcock et al., Vasc. Pl. Pacif. N.W. +
1955 +
pistillate +
absent +
fertile +
epaleate +
ovoid +
fibrous +
unequal +
exalbuminous +
modifed +
Endemic +
alternate +
branched +
erect +
2-branched +
papillate +
Rudbeckia laciniata var. ampla +
Rudbeckia laciniata +
variety +
cylindric +
equaling +
shorter +
much longer +
crenate +
perennial +