Hymenopappus artemisiifolius var. riograndensis

B. L. Turner

Rhodora 58: 305, fig. 47. 1956.

Endemic
Treatment appears in FNA Volume 21. Treatment on page 315.

Cauline leaves 2–8. Peduncles 2–5 cm. Phyllaries yellowish, 5–7 × 2–4 mm. Disc-florets 40–60; corollas yellowish to reddish, 3–3.5 mm, tubes 2 mm, throats funnelform, 1.5 mm, lengths 1–1.2 times lobes. Cypselae 4–5 mm, ± villous; pappi 1.5–2 mm. 2n = 34.


Phenology: Flowering Mar–May.
Habitat: Sandy-clay or gravelly soils
Elevation: 0–50+ m

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 +
John L. Strother +
B. L. Turner +
1-pinnate +  and simple +
8 cm80 mm <br />0.08 m <br /> (20 cm200 mm <br />0.2 m <br />) +
decurrent +
compound +  and simple +
toothed +
1-2+ times pinnately lobed ultimate margins usually entire +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
2 (?) +  and 8 (?) +
yellowish +  and reddish +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
obpyramidal +
fertile +  and bisexual +
fertile +  and bisexual +
0–50+ m +
tomentose +, hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Sandy-clay or gravelly soils +
discoid +  and radiate +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
obconic;hemispheric +
cauline +  and basal +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
deltate +  and filiform +
0.1 cm1 mm <br />0.001 m <br /> (?) +  and 0.5 cm5 mm <br />0.005 m <br /> (?) +
dentate to pinnatifid or palmatifid +  and entire +
2-carpellate +
persistent +
of 12 +  and 22 orbiculate to spatulate scales +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Flowering Mar–May. +
scarious-margined +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
5 +  and 13 +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
1.5-2 mm +, 0.3 +  and 1 +
orbiculate +  and spatulate +
exalbuminous +
scapiform +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Compositae +
Hymenopappus artemisiifolius var. riograndensis +
Hymenopappus artemisiifolius +
variety +
1-1.2 times lobes +
campanulate +  and dilated +
1.5 cm15 mm <br />0.015 m <br /> (?) +
2 cm20 mm <br />0.02 m <br /> (?) +
toothed +  and entire +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
40 cm400 mm <br />0.4 m <br /> (100 cm1,000 mm <br />1 m <br />) +
tree +, shrub +  and subshrub +