familyAsteraceae
tribeAsteraceae tribe Heliantheae
subtribeAsteraceae (tribe Heliantheae) subtribe Madiinae
genusLayia
speciesLayia leucopappa

Layia leucopappa

D. D. Keck

Madroño 3: 17. 1935.

Bruce G. Baldwin, Susan J. Bainbridge, John L. Strother
EndemicConservation concern
Treatment appears in FNA Volume 21. Treatment on page 266. Mentioned on page 263.

Plants 8–60 cm (self-incompatible); glandular, not strongly scented. Stems not purple-streaked. Leaf-blades oblong to oblanceolate, 6–50 (–80) mm, margins (basal leaves) toothed to lobed. Involucres hemispheric to depressed-hemispheric, 3.5–8 (–11) × 4–10 (–13) mm. Phyllaries 6–15, apices longer or shorter than folded bases. Paleae in 1 series between ray and disc-florets. Ray-florets 6–15; laminae white, 3–12 (–19) mm. Disc-florets 20–100+; corollas 2.5–5 mm; anthers yellow to brownish. Ray cypselae sparsely hairy. Disc pappi 10–13 white, lanceolate, acuminate, ± equal scales 2–3.5 mm, not plumose, not adaxially woolly (bases sparsely setose). 2n = 14.


Phenology: Flowering Mar–Apr.
Habitat: Grasslands, openings in chenopod scrub (historically), on sparsely-vegetated, clayey, subalkaline soils
Elevation: 100–400 m

Distribution

V21-650-distribution-map.gif

Calif.

Discussion

Of conservation concern.

Layia leucopappa occurs in the Comanche and Tejon hills (western Tehachapi Range). Populations of the southern San Joaquin Valley (south and east of Bakersfield) have been extirpated.

Selected References

None.

Lower Taxa

None.
... more about "Layia leucopappa"
RDF feed
2n chromosome quantity
14 +
Anther base shape
not tailed +, rounded +  and obtuse +
Anther coloration
yellow +  and brownish +
Anther dehiscence
introrse +
Anther fusion
connate +
Anther theca coloration
pale +  and dark +
Apex fusion
connate +  and distinct +
Apex growth form or texture
herbaceous +
Apex height or length or size
longer or shorter +
Apex length or size
longer +
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
umbelliform +, spiciform +, paniculiform +, glomerulate +  and corymbiform +
Array development
indeterminate +  and determinate +
Author
Bruce G. Baldwin +, Susan J. Bainbridge +  and John L. Strother +
Authority
D. D. Keck +
Band architecture
continuous +
Band quantity
1 +
Base architecture or shape
folded +
Base shape
decurrent +
Between ray and disc-floret series quantity
1 +
Blade-leaf atypical distance
5 cm50 mm <br />0.05 m <br /> (8 cm80 mm <br />0.08 m <br />) +
Blade-leaf distance
0.6 cm6 mm <br />0.006 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Blade-leaf shape
oblong +  and oblanceolate +
Blade architecture
compound +  and simple +
Blade arrangement or shape
linear to linear-elliptic +
Blade shape
1-2-pinnatifid;oblanceolate;linear +
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) +
Corolla architecture
zygomorphic +
Corolla coloration
yellow +, bicolored +, white +  and cream +
Corolla some measurement
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Cypsela architecture
monomorphic +
Cypsela architecture or shape
beaked +
Cypsela growth form
dimorphic +
Cypsela pubescence
hairy +  and glabrous +
Cypsela shape
fusiform +, clavate +, obpyramidal +, terete +, compressed +  and obcompressed +
Disc-floret architecture
staminate +
Disc-floret quantity
20 (100) +
Disc-floret reproduction
fertile +  and bisexual +
Disc cypsela shape
clavate +
Disc floret architecture
staminate +
Disc floret reproduction
fertile +  and bisexual +
Disc pappus coloration
White (?) +
Disc pappus quantity
10 (13) +
Disc pappus shape
acuminate +  and lanceolate +
Distribution
Calif. +
Elevation
100–400 m +
Embryo course
straight +
Face architecture or function or pubescence
glandular +
Face pubescence
hirsute +  and strigose +
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
Grasslands, openings in chenopod scrub (historically), on sparsely-vegetated, clayey, subalkaline soils +
Head architecture or arrangement
radiate +
Head architecture or shape
discoid +
Head arrangement
in more or less corymbiform arrays +  and singly +
Head development
indeterminate +
Head reproduction
homogamous +  and heterogamous +
Illustration copyright
Flora of North America Association +
Illustrator
Yevonn Wilson-Ramsey +
Individual head architecture
each +  and sessile +
Involucre atypical length
0.8 cm8 mm <br />0.008 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
Involucre atypical width
1 cm10 mm <br />0.01 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Involucre diameter
0.2 cm2 mm <br />0.002 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Involucre length
0.35 cm3.5 mm <br />0.0035 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Involucre position relational
surrounding +
Involucre shape
hemispheric;depressed-hemispheric +
Involucre width
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Lamina atypical some measurement
1.2 cm12 mm <br />0.012 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
Lamina coloration
white +
Lamina some measurement
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Leaf architecture
petiolate +  and sessile +
Leaf arrangement
alternate +  and opposite +
Leaf position
cauline +
Line quantity
2 +
Lobe atypical quantity
3 (5) +
Lobe quantity
5 (?) +
Lobe shape
deltate +
Margin architecture or shape
dentate to pinnatifid or palmatifid +  and entire +
Margin shape
toothed +  and lobed +
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 +
Pappus pubescence
glabrous +
Pappus pubescence or relief
scabrous +
Pappus quantity
of 1 +  and 32 elliptic +
Pappus shape
subulate +, setiform +, ovate +  and lance-attenuate +
Pericarp fragility
tough +
Pericarp width
thick +
Peripheral floret presence
absent +
Peripheral floret quantity
In 1 (3+ series) +
Petal fusion
connate +
Phenology
Flowering Mar–Apr. +
Phyllary duration
persistent +
Phyllary fusion
distinct +
Phyllary life cycle
falling +
Phyllary presence
absent +
Phyllary quantity
6 +  and 15 +
Phyllary size
unequal +
Phyllary texture
Herbaceous (Chartaceous) +
Proximal leaf architecture
sessile +
Proximal leaf arrangement
alternate +  and opposite +
Publication title
Madroño +
Publication year
1935 +
Ray-floret architecture
pistillate +
Ray-floret presence
absent +
Ray-floret quantity
6 (15) +
Ray-floret reproduction
fertile +
Ray cypsela pubescence
hairy +
Ray cypsela shape
clavate +  and obcompressed +
Receptacle architecture
paleate +
Receptacle pubescence
setulose +
Receptacle shape
flat;convex +
Reference
None +
Root texture
fibrous +
Scale pubescence
woolly +
Scale shape
not plumose +
Scale some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Scale variability
equal +
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 650.xml +
Special status
Endemic +  and Conservation concern +
Spine presence
absent +
Stamen arrangement
alternate +
Stamen atypical quantity
4 (5) +
Stamen quantity
5 +
Stem coloration
not purple-streaked +
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
Compositae +
Taxon family
Asteraceae +
Taxon name
Layia leucopappa +
Taxon parent
Layia +
Taxon rank
species +
Throat shape
cylindric +
Throat variability
equaling +
Tube height or length or size
shorter +
Ultimate margin shape
entire +  and toothed +
Volume
Volume 21 +
Whole-organism atypical some measurement
60 cm600 mm <br />0.6 m <br /> (130 cm1,300 mm <br />1.3 m <br />) +
Whole-organism duration
annual +
Whole-organism some measurement
2 cm20 mm <br />0.02 m <br /> (60 cm600 mm <br />0.6 m <br />) +
Whole organism architecture or function or pubescence
glandular +
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
plant +
Whole organism odor
scented +
Whole organism some measurement
8cm (60cm) +
X chromosome quantity
8 +