Hymenoxys richardsonii var. floribunda
Madroño 10: 159. 1950.
Common names: Colorado rubberweed olivaceous bitterweed
Endemic
Basionym: Actinella richardsonii var. floribunda A. Gray Mem. Amer. Acad. Arts, n. s. 4: 101. 1849
Plants 19–34 cm. Stems (2–) 5–20 (–30+), glabrous or ± hairy. Leaves glabrous or sparsely hairy. Heads (30–) 80–250 (–300+) per plant. Involucres 7–8 × 7–9 mm. Phyllaries: outer 8–9, strongly keeled, obovate, ovate, or lanceolate, 3.5–6 mm, apices acute; inner 8–12, 3–5 mm. Ray-florets 7–9; corollas 7–11 mm. Disc-florets 25–50+; corollas 3–4 mm. Cypselae 2 mm; pappi of (4–) 5 obovate, aristate scales 1.8–2.8 mm. 2n = 30.
Phenology: Flowering (May–)Jul–Aug(–Oct).
Habitat: Roadsides, open areas, edges of forests
Elevation: (1600–)1800–2700(–3400) m
Distribution
Ariz., Colo., N.Mex., Tex., Utah.
Discussion
Selected References
None.
Lower Taxa
None.
... more about "Hymenoxys richardsonii var. floribunda"
introrse +
connate +
herbaceous +
inner +
acute +
scarious +
absent +
hirsute +
papillate +
corymbiform +
continuous +
decurrent +
simple +
lobed +
winged;ribbed;winged;ribbed +
1;15 +
stigmatic +
35;150 +
absent +
zygomorphic +
yellow +
monomorphic +
dimorphic +
obpyramidal +
staminate +
staminate +
straight +
distinct +
proximal +
1;5 +
bisexual +
dispersed +
corymbiform +
singly +
indeterminate +
80;250 +
surrounding +
campanulate +
alternate +
deltate +
connate +
2-carpellate +
inferior +
attached +
anatropous +
persistent +
falling +
absent +
hairy +
tough +
thick +
absent +
connate +
persistent +
distinct +
falling +
unequal +
Madroño +
1950 +
pistillate +
absent +
fertile +
epaleate +
conic;ovoid;conic;ovoid;hemispheric +
fibrous +
absent +
exalbuminous +
modifed +
subequal;unequal +
Endemic +
alternate +
branched +
erect +
2-branched +
papillate +
Hymenoxys richardsonii var. floribunda +
Hymenoxys richardsonii +
variety +
shorter +
dilated +
equaling +
perennial +
obovate +