Rudbeckia laciniata var. bipinnata

Perdue

Rhodora 64: 328. 1962.

Common names: Northeastern cutleaf coneflower
Endemic
Treatment appears in FNA Volume 21. Treatment on page 49.

Leaves: basal 15–40 × 10–25 cm, blades pinnately compound to 2-pinnatifid; proximal cauline 2-pinnatifid, mid cauline blades 5–11-lobed (distal usually 3-lobed); adaxial faces sparsely to moderately hairy. Receptacles globose to ovoid; paleae 3.1–4.1. Ray laminae 20–45 × 7–12 mm. Discs 15–19 × 10–20 mm. Cypselae 3.5–4 mm; pappi mostly 0.7+ mm. 2n = 72, ca. 72, 102+.


Phenology: Flowering late summer–fall.
Habitat: Wet habitats, along streams and edges of woods
Elevation: 10–300 m

Distribution

V21-97-distribution-map.gif

Conn., Del., Md., Mass., N.H., N.Y., Pa.

Discussion

Selected References

None.

Lower Taxa

None.

not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
Lowell E. Urbatsch +  and Patricia B. Cox +
Perdue +
15 cm150 mm <br />0.15 m <br /> (40 cm400 mm <br />0.4 m <br />) +
10 cm100 mm <br />0.1 m <br /> (25 cm250 mm <br />0.25 m <br />) +
cuneate +  and attenuate or cordate +
2-pinnatifid +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
sessile +  and petiolate +
sessile +  and petiolate +
8 cm80 mm <br />0.08 m <br /> (40 cm400 mm <br />0.4 m <br />) +
lobed +, mostly lobed +  and pinnatifid +
3cm +  and 20cm +
Northeastern cutleaf coneflower +
yellow +  and yellowish green +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
hairy +  and glabrous +
flattened +, fusiform-terete +  and obpyramidal +
fertile +  and bisexual +
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
fertile +  and bisexual +
1.5 cm15 mm <br />0.015 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
10mm;20mm +
Conn. +, Del. +, Md. +, Mass. +, N.H. +, N.Y. +  and Pa. +
10–300 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Wet habitats, along streams and edges of woods +
discoid +  and radiate +
in loose , corymbiform to paniculiform arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.1 cm1 mm <br />0.001 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
fusiform;turbinate or broadly campanulate +
15mm;50mm +
elliptic +  and oblanceolate +
4mm;14mm +
sessile +  and petiolate +
cauline +  and proximal +
2-pinnatifid +
deltate +  and lance-linear +
dentate +  and entire +
2-carpellate +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
persistent +
0 +  and 2 +
of 4 scales +  and coroniform +
0 cm0 mm <br />0 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Flowering late summer–fall. +
3 +  and 21 +
0 cm0 mm <br />0 m <br /> (2 cm20 mm <br />0.02 m <br />) +
2 cm20 mm <br />0.02 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
bearing subulate enations +, hairy +  and bristly +
pitted +  and smooth +
globose;ovoid +
connate +  and distinct +
unequal +
exalbuminous +
purplish +, bluish green +  and green +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Rudbeckia subg. Macrocline +
Rudbeckia laciniata var. bipinnata +
Rudbeckia laciniata +
variety +
cylindric +
serrate +, dentate +  and entire +
50 cm500 mm <br />0.5 m <br /> (300 cm3,000 mm <br />3 m <br />) +
shrub +  and subshrub +