familyAsteraceae
tribeAsteraceae tribe Heliantheae
subtribeAsteraceae (tribe Heliantheae) subtribe Madiinae
genusHemizonia
speciesHemizonia congesta
subspeciesHemizonia congesta subsp. luzulifolia

Hemizonia congesta subsp. luzulifolia

(de Candolle) Babcock & H. M. Hall

Univ. Calif. Publ. Bot. 13: 43. 1924.

Bruce G. Baldwin, John L. Strother
Common names: Hayfield tarweed
IllustratedEndemic
Basionym: Hemizonia luzulifolia de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 692. 1836 (as luzulaefolia)
Synonyms: Hemizonia congesta var. luzulifolia (de Candolle) Jepson Hemizonia luzulifolia subsp. rudis (Bentham) D. D. Keck
Treatment appears in FNA Volume 21. Treatment on page 293. Mentioned on page 292.
Revision as of 22:43, 29 July 2020 by imported>Volume Importer
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Please click on the illustration for a higher resolution version.
Illustrator: Marjorie C. Leggitt

Copyright: Flora of North America Association

Leaves pubescent, villous, or sericeous (distal with hairs not notably longer at margins), all or distal glandular. Heads in paniculiform arrays. Peduncles 0 or 1–30 mm, bracts not surpassing phyllaries. Calyculi 0. Phyllaries 3.5–6.5 mm, apices usually shorter than bodies. Ray-florets 5–11; laminae white, abaxially purple-veined. Cypsela widths 0.5–0.6 times lengths. 2n = 28.


Phenology: Flowering Mar–Dec.
Habitat: Disturbed sites, grassy slopes, valley bottoms, openings in chaparral and woodlands, often clayey soils, serpentine
Elevation: 0–1000 m

Distribution

V21-719-distribution-map.gif

Calif.

Discussion

Subspecies luzulifolia occurs from the North Inner Coast Ranges and northern Great Valley through the San Francisco Bay area to the southern South Coast Ranges. Natural hybridization between subsp. luzulifolia and subsp. lutescens has been reported (E. B. Babcock and H. M. Hall 1924).

Selected References

None.

Lower Taxa

None.
... more about "Hemizonia congesta subsp. luzulifolia"
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2n chromosome quantity
28 +
Anther base shape
not tailed +, rounded +  and obtuse +
Anther dehiscence
introrse +
Anther fusion
connate +
Anther theca coloration
pale +  and dark +
Apex architecture or shape
beaked +
Apex fusion
connate +  and distinct +
Apex growth form or texture
herbaceous +
Apex height or length or size
usually shorter +
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
Bruce G. Baldwin +  and John L. Strother +
Authority
(de Candolle) Babcock & H. M. Hall +
Band architecture
continuous +
Band quantity
1 +
Basal attachment orientation or shape
oblique +
Base shape
decurrent +
Basionyms
Hemizonia luzulifolia +
Beak course
straight +
Beak diameters
greater than lengths +
Beak prominence
inconspicuous +
Blade architecture
compound +  and simple +
Blade arrangement or shape
linear to linear-elliptic +
Blade shape
lobed;usually spatulate;oblanceolate +
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 shape
Plumose (?) +
Calyculus presence
absent +
Calyculus quantity
2 (12) +
Common name
Hayfield tarweed +
Corolla architecture
zygomorphic +
Corolla coloration
yellow +  and white +
Cypsela architecture
monomorphic +
Cypsela architecture or shape
beaked +
Cypsela coloration
black +
Cypsela growth form
dimorphic +
Cypsela pubescence
hairy +  and glabrous +
Cypsela shape
fusiform +, clavate +, obpyramidal +, terete +, compressed +  and obcompressed +
Cypsela some measurement
2mm;3.5mm +
Cypselum l w ratio
1/(0.5-0.6) +
Disc-floret architecture
staminate +
Disc-floret quantity
5 (60) +
Disc-floret reproduction
fertile +  and bisexual +
Disc corolla some measurement
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Disc cypsela presence
absent +
Disc floret architecture
staminate +
Disc floret reproduction
fertile +  and bisexual +
Distal leaf architecture or function or pubescence
glandular +
Distribution
Calif. +
Elevation
0–1000 m +
Embryo course
straight +
Face architecture or function or pubescence
glandular +
Face pubescence
glabrous +, villous +, sericeous +, strigose +, hirsute +, hispidulous +  and puberulent +
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 arrangement
singly +
Habitat
Disturbed sites, grassy slopes, valley bottoms, openings in chaparral and woodlands, often clayey soils, serpentine +
Head architecture or arrangement
radiate +
Head architecture or shape
discoid +
Head arrangement
singly +
Head development
indeterminate +
Head reproduction
homogamous +  and heterogamous +
Illustration
Present +
Illustration copyright
Flora of North America Association +
Illustrator
Marjorie C. Leggitt +
Individual head architecture
each +  and sessile +
Involucre diameter
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Involucre length
0.35 cm3.5 mm <br />0.0035 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Involucre position relational
surrounding +
Involucre shape
hemispheric;more or less urceolate or globose +
Involucre width
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Lamina architecture
purple-veined +
Lamina coloration
white +
Leaf-blade atypical width
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Leaf-blade length
5 cm50 mm <br />0.05 m <br /> (17.5 cm175 mm <br />0.175 m <br />) +
Leaf-blade width
2mm;8mm +
Leaf architecture
petiolate +  and sessile +
Leaf arrangement
alternate +  and opposite +
Leaf position
cauline +
Leaf pubescence
sericeous +, villous +  and pubescent +
Line quantity
2 +
Lobe atypical quantity
3 (5) +
Lobe quantity
5 (?) +
Lobe shape
deltate +
Margin architecture or shape
entire +  and serrulate +
Number of lower taxa
0 +
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 duration
persistent +
Pappus life cycle
falling +
Pappus presence
absent +
Peduncle presence
absent +
Peduncle quantity
1-30 mm +
Pericarp fragility
tough +
Pericarp width
thick +
Peripheral floret presence
absent +
Peripheral floret quantity
In 1 (3+ series) +
Petal fusion
connate +
Phenology
Flowering Mar–Dec. +
Phyllary duration
persistent +
Phyllary fusion
distinct +
Phyllary life cycle
falling +
Phyllary presence
absent +
Phyllary quantity
5 +  and 14 +
Phyllary size
unequal +
Phyllary some measurement
0.35 cm3.5 mm <br />0.0035 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
Phyllary texture
Herbaceous (Chartaceous) +
Proximal leaf architecture
sessile +
Proximal leaf arrangement
alternate +  and opposite +
Publication title
Univ. Calif. Publ. Bot. +
Publication year
1924 +
Ray-floret architecture
pistillate +
Ray-floret presence
absent +
Ray-floret quantity
5 (11) +
Ray-floret reproduction
fertile +
Ray cypsela shape
gibbous +  and obcompressed +
Ray lamina some measurement
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Receptacle architecture
paleate +
Receptacle pubescence
glabrous +
Receptacle shape
flat;conic +
Reference
None +
Root texture
fibrous +
Seed architecture
exalbuminous +
Seed quantity
1 +
Sepal variability
modifed +
Series atypical quantity
1 (2) +
Series quantity
1 +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V21 719.xml +
Special status
Illustrated +  and Endemic +
Spine presence
absent +
Stamen arrangement
alternate +
Stamen atypical quantity
4 (5) +
Stamen quantity
5 +
Stem orientation
erect +
Style-branch architecture
appendaged +  and truncate +
Style architecture
2-branched +
Style pubescence
hirsutulous +  and glabrous +
Style quantity
1 +
Style relief
papillate +
Synonyms
Hemizonia congesta var. luzulifolia +  and Hemizonia luzulifolia subsp. rudis +
Taxon family
Asteraceae +
Taxon name
Hemizonia congesta subsp. luzulifolia +
Taxon parent
Hemizonia congesta +
Taxon rank
subspecies +
Throat shape
cylindric +
Throat variability
equaling +
Tube height or length or size
shorter +
Ultimate margin shape
toothed +  and entire +
Volume
Volume 21 +
Whole-organism duration
annual +
Whole-organism some measurement
5 cm50 mm <br />0.05 m <br /> (80 cm800 mm <br />0.8 m <br />) +
Whole organism atypical some measurement
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Whole organism growth form
shrub +  and subshrub +
Whole organism some measurement
1cm (250cm) +
X chromosome quantity
14 +