Hymenoxys ambigens var. floribunda

(A. Gray) W. L. Wagner

Brittonia 51: 84. 1999.

EndemicConservation concern
Basionym: Plummera floribunda A. Gray Proc. Amer. Acad. Arts 17: 215. 1882
Synonyms: Hymenoxys microcephala Bierner
Treatment appears in FNA Volume 21. Treatment on page 439. Mentioned on page 438.

Plants 30–150 cm. Heads (25–) 100–350+. Phyllaries: outer 3–4, basally connate 3/4 their lengths, 4–6 mm, apices rounded to usually obtuse to sometimes acute; inner 3–4, 3.2–4 mm, apices rounded or obtuse to weakly acute or mucronate. Ray-florets 3–4; corollas 4.5–6 × 2–2.5 mm. Disc-florets 6–13. Cypselae 3–3.5 mm, hairs strongly wavy; pappi 0 or of 2–4 scales 1–2 mm. 2n = 30.


Phenology: Flowering Jun–Oct.
Habitat: Savannas, oak-juniper woodlands, pine forests
Elevation: 1500–2300 m

Discussion

Of conservation concern.

Variety floribunda is known from the Chiricahua, Dos Cabezas, Dragoon, Little Dragoon, and Mule mountains.

Selected References

None.

Lower Taxa

None.
not tailed +, rounded +  and obtuse +
connate +  and distinct +
obtuse;weakly acute or mucronate +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
paniculiform +  and corymbiform +
indeterminate +  and determinate +
Mark W. Bierner +
(A. Gray) W. L. Wagner +
decurrent +
Plummera floribunda +
hairy +  and glabrous +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
hairy +  and glabrous +
fertile +  and bisexual +
fertile +  and bisexual +
1500–2300 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Savannas, oak-juniper woodlands, pine forests +
discoid +  and radiate +
in paniculiform to corymbiform arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.32 cm3.2 mm <br />0.0032 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (3.2 cm32 mm <br />0.032 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
campanulate;narrowly campanulate +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
obovate +  and oblanceolate +
unequal +  and subequal +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
2-carpellate +
persistent +
of 2 +  and 4 scales +
hairy +  and glabrous +
0.4 cm4 mm <br />0.004 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering Jun–Oct. +
28 +  and 50 +
bearing subulate enations +, hairy +  and bristly +
pitted +  and smooth +
conic;ovoid;conic;ovoid;hemispheric +
2 +  and 4 +
lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
exalbuminous +
subequal;unequal +
Endemic +  and Conservation concern +
purple-red-tinted +
hairy +  and glabrous +
1 +  and 3 +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Hymenoxys microcephala +
Hymenoxys ambigens var. floribunda +
Hymenoxys ambigens +
variety +
urceolate +  and campanulate +
dilated +
toothed +  and entire +
3 (?) +  and 5 (?) +
obovate +  and oblanceolate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +