Helianthus praecox subsp. runyonii

(Heiser) Heiser

Mem. Torrey Bot. Club 22(3): 54. 1969.

Common names: Runyon’s sunflower
Endemic
Basionym: Helianthus debilis subsp. runyonii Heiser Madroño 13: 161, fig. 7. 1956
Synonyms: Helianthus praecox var. runyonii (Heiser) B. L. Turner
Treatment appears in FNA Volume 21. Treatment on page 152.
Revision as of 22:15, 29 July 2020 by imported>Volume Importer
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Stems erect, branches ascending, moderately hirsute. Leaves (larger) 3–7.5 (–8) cm. Peduncles 20–30 (–35) cm. Phyllary apices short-attenuate. Paleae: middle teeth white-villous (“bearded”). Rays 11–13 (–14). 2n = 34.


Phenology: Flowering spring–fall.
Habitat: Coastal prairies
Elevation: 0–20+ m

Discussion

Selected References

None.

Lower Taxa

None.
hispidulous +  and hispid-hirsute +
not tailed +, rounded +  and obtuse +
pale +  and dark +
connate +  and distinct +
short-attenuate;short-acuminate +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
spiciform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Edward E. Schilling +
(Heiser) Heiser +
cuneate +  and cordate +
Helianthus debilis subsp. runyonii +
3 cm30 mm <br />0.03 m <br /> (9 cm90 mm <br />0.09 m <br />) +
deltate;ovate +
2 cm20 mm <br />0.02 m <br /> (7 cm70 mm <br />0.07 m <br />) +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
Runyon’s sunflower +
reddish +  and yellow +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
compressed +  and obpyramidal +
fertile +  and bisexual +
fertile +  and bisexual +
0–20+ m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Coastal prairies +
in more or less corymbiform , paniculiform or spiciform , arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
1.3 cm13 mm <br />0.013 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
hemispheric +
1.6 cm16 mm <br />0.016 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
sessile +  and petiolate +
7.5 cm75 mm <br />0.075 m <br /> (8 cm80 mm <br />0.08 m <br />) +
3 cm30 mm <br />0.03 m <br /> (?) +  and 7.5 cm75 mm <br />0.075 m <br /> (?) +
triangular +
serrate +  and serrulate +
2-carpellate +
3-toothed +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
persistent +
coroniform +
30 cm300 mm <br />0.3 m <br /> (35 cm350 mm <br />0.35 m <br />) +
20 cm200 mm <br />0.2 m <br /> (30 cm300 mm <br />0.3 m <br />) +
5 cm50 mm <br />0.05 m <br /> (9 cm90 mm <br />0.09 m <br />) +
Flowering spring–fall. +
short-attenuate +
0.9 cm9 mm <br />0.009 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
30 +  and 39 +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Mem. Torrey Bot. Club +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
aristate +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
exalbuminous +
hirsute +, hispid-hirsute +  and hispid +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Helianthus praecox var. runyonii +
Helianthus praecox subsp. runyonii +
Helianthus praecox +
subspecies +
campanulate +
toothed +  and entire +
300 cm3,000 mm <br />3 m <br /> (500 cm5,000 mm <br />5 m <br />) +
40 cm400 mm <br />0.4 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
2 cm20 mm <br />0.02 m <br /> (20 cm200 mm <br />0.2 m <br />) +
shrub +  and subshrub +