familyAsteraceae
tribeAsteraceae tribe Heliantheae
subtribeAsteraceae (tribe Heliantheae) subtribe Gaillardiinae
genusHelenium
speciesHelenium microcephalum
varietyHelenium microcephalum var. oöclinium

Helenium microcephalum var. oöclinium

(A. Gray) Bierner

Sida 5: 47. 1972.

Mark W. Bierner
Basionym: Helenium oöclinium A. Gray Proc. Amer. Acad. Arts 9: 202. 1874
Treatment appears in FNA Volume 21. Treatment on page 434.

Plants 25–80 cm. Leaves: proximal and mid-blades serrate to undulate-serrate to occasionally deeply toothed or laciniate, glabrate; distal blades glabrous or sparsely to moderately hairy. Heads 20–100+ per plant. Peduncles 1.5–8 cm, usually projecting terminal heads well beyond foliage. Involucres 8–12 × 8–12 mm. Ray-florets 9–13; corollas usually yellow throughout, sometimes reddish proximally and yellow distally, 2.7–9.1 × 1.5–6.7 mm. Disc-florets 200–400+; corollas 1.7–2.4 mm, lobes 5. Pappi 0.4–0.7 mm. 2n = 26.


Phenology: Flowering (Mar–)Apr–Jun(–Dec).
Habitat: Sandy or clay soils, ditches, washes, around ponds and lakes, along streams
Elevation: 500–1900 m

Distribution

V21-1088-distribution-map.gif

Tex., Mexico (Coahuila), Mexico (Nuevo León), Mexico (Durango), Mexico (San Luis Potosí)

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Helenium microcephalum var. oöclinium"
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2n chromosome quantity
26 +
Anther base shape
not tailed +, rounded +  and obtuse +
Anther dehiscence
introrse +
Anther fusion
connate +
Anther theca coloration
pale +
Apex fusion
connate +  and distinct +
Apex growth form or texture
herbaceous +
Apex size
subequal +
Apex texture
scarious +
Apical appendage presence
absent +
Apical appendage shape
usually ovate +  and lanceolate +
Appendage pubescence
hirsute +
Appendage relief
papillate +
Appendage shape
usually deltate +  and lanceolate +
Array architecture
paniculiform +
Array development
indeterminate +  and determinate +
Author
Mark W. Bierner +
Authority
(A. Gray) Bierner +
Band architecture
continuous +
Band quantity
1 +
Base shape
decurrent +
Basionyms
Helenium oöclinium +
Blade architecture
compound +  and simple +
Blade shape
pinnatifid;lobed;spatulate;ovate;spatulate;ovate;oblong;oblanceolate;linear;lanceolate;elliptic +
Body architecture
winged;ribbed;winged;ribbed +
Body architecture or pubescence or relief
smooth +
Body relief
tuberculate +  and rugose +
Bractlet quantity
1;15 +
Branch arrangement or course or shape
linear +
Branch structure in adjective form
stigmatic +
Bristle architecture
barbellulate +  and barbellate +
Bristle quantity
35;150 +
Bristle shape
Plumose (?) +
Calyculus presence
absent +
Calyculus quantity
Of 1 (15+ bractlets) +
Corolla architecture
zygomorphic +
Corolla coloration
reddish proximally and yellow +  and yellow +
Corolla length
0.27 cm2.7 mm <br />0.0027 m <br /> (0.91 cm9.1 mm <br />0.0091 m <br />) +
Corolla some measurement
0.17 cm1.7 mm <br />0.0017 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
Corolla width
0.15 cm1.5 mm <br />0.0015 m <br /> (0.67 cm6.7 mm <br />0.0067 m <br />) +
Cypsela architecture
monomorphic +
Cypsela architecture or shape
beaked +
Cypsela growth form
dimorphic +
Cypsela pubescence
hairy +
Cypsela shape
4-5-angled +  and obpyramidal +
Cypsela some measurement
0.7mm;1.4mm +
Disc-floret architecture
staminate +
Disc-floret quantity
200 (400) +
Disc-floret reproduction
fertile +  and bisexual +
Disc floret architecture
staminate +
Disc floret reproduction
fertile +  and bisexual +
Distal blade pubescence
glabrous or +  and sparsely moderately hairy +
Distal blade shape
narrowly elliptic;narrowly oblongelliptic serrate +
Distribution
Tex. +, Mexico (Coahuila) +, Mexico (Nuevo León) +, Mexico (Durango) +  and Mexico (San Luis Potosí) +
Elevation
500–1900 m +
Embryo course
straight +
Face coloration
gland-dotted +
Face pubescence
glabrous or +  and sparsely densely hairy +
Filament fusion
distinct +
Floret architecture
pistillate +, staminate +  and neuter +
Floret atypical quantity
5;15 +
Floret position
proximal +
Floret quantity
1;5 +
Floret reproduction
bisexual +
Fruit architecture
winged +  and beaked +
Fruit condition or texture
dry +
Fruit density
dispersed +
Glomerule architecture
corymbiform +
Glomerule arrangement
singly +
Habitat
Sandy or clay soils, ditches, washes, around ponds and lakes, along streams +
Head architecture
discoid +  and radiate +
Head arrangement
singly +
Head atypical quantity
2 (300) +
Head development
indeterminate +
Head quantity
20;100 +
Head reproduction
homogamous +  and heterogamous +
Illustration copyright
Flora of North America Association +
Illustrator
Yevonn Wilson-Ramsey +
Individual head architecture
each +  and sessile +
Involucre diameter
0.4 cm4 mm <br />0.004 m <br /> (3.4 cm34 mm <br />0.034 m <br />) +
Involucre length
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Involucre position relational
surrounding +
Involucre shape
ovoid +
Involucre width
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Leaf architecture
sessile +  and petiolate +
Leaf arrangement
alternate +
Leaf position
cauline +
Leaf pubescence
glabrous or +  and sparsely moderately hairy +
Line quantity
2 +
Lobe atypical quantity
4 (5) +
Lobe quantity
5 (?) +
Lobe shape
deltate +
Margin architecture or shape
dentate to pinnatifid or palmatifid +  and entire +
Number of lower taxa
0 +
Outer phyllary fusion
connate +  and distinct +
Outer phyllary shape
ovate +, oblong +, oblanceolate +, linear +, lanceolate +  and elliptic +
Outer phyllary size
unequal +  and subequal +
Ovary architecture
2-carpellate +
Ovary architecture or structure in adjective form
1-locular +
Ovary position
inferior +
Ovule fixation
attached +
Ovule orientation
anatropous +
Ovule quantity
1 +
Pappus architecture or shape
entire +
Pappus duration
persistent +
Pappus life cycle
falling +
Pappus quantity
6 +
Pappus some measurement
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
Peduncle pubescence
hairy +
Peduncle some measurement
1.5 cm15 mm <br />0.015 m <br /> (8 cm80 mm <br />0.08 m <br />) +
Pericarp fragility
tough +
Pericarp width
thick +
Peripheral floret presence
absent +
Peripheral floret quantity
In 1 (3+ series) +
Petal fusion
connate +
Phenology
Flowering (Mar–)Apr–Jun(–Dec). +
Phyllary atypical quantity
34 (40) +
Phyllary duration
persistent +
Phyllary fusion
distinct +
Phyllary life cycle
falling +
Phyllary pubescence
hairy +
Phyllary quantity
9 +  and 34 +
Phyllary size
unequal +
Phyllary texture
Herbaceous (Chartaceous) +
Proximal mid-blade pubescence
glabrate +
Proximal mid-blade shape
Serrate (Undulate-serrate) +
Publication title
Sida +
Publication year
1972 +
Ray-floret architecture
pistillate +
Ray-floret presence
absent +
Ray-floret quantity
9 (13) +
Ray-floret reproduction
fertile +
Receptacle architecture
epaleate +
Receptacle pubescence
bearing subulate enations +, hairy +  and bristly +
Receptacle relief
pitted +
Receptacle shape
ovoid;hemispheric;ovoid;hemispheric;globose;conic +
Reference
None +
Root texture
fibrous +
Scale atypical some measurement
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
Scale presence
absent +
Scale quantity
5 +  and 12 +
Scale shape
non-aristate +
Scale some measurement
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
Seed architecture
exalbuminous +
Seed quantity
1 +
Sepal variability
modifed +
Series atypical quantity
2 (3) +
Series quantity
2 +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V21 1088.xml +
Stamen arrangement
alternate +
Stamen atypical quantity
4 (5) +
Stamen quantity
5 +
Stem architecture
winged +  and branched +
Stem atypical quantity
2 (?) +  and 10 (?) +
Stem orientation
erect +
Stem pubescence
hairy +  and glabrous +
Stem quantity
1 +
Streak coloration or density
purple +
Style-branch architecture
appendaged +  and truncate +
Style architecture
2-branched +
Style pubescence
hirsutulous +  and glabrous +
Style quantity
1 +
Style relief
papillate +
Synonyms
Compositae +
Taxon family
Asteraceae +
Taxon name
Helenium microcephalum var. oöclinium +
Taxon parent
Helenium microcephalum +
Taxon rank
variety +
Terminal head orientation
projecting +
Throat shape
urceolate +  and campanulate +
Tube height or length or size
shorter +
Tube shape
dilated +
Tube variability
equaling +
Ultimate margin shape
toothed +  and entire +
Volume
Volume 21 +
Whole-organism duration
annual +
Whole-organism some measurement
25 cm250 mm <br />0.25 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
Whole organism growth form
plant +
Whole organism some measurement
25cm (80cm) +
X chromosome quantity
17 +