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.

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 +