Pentachaeta lyonii

A. Gray in A. Gray et al.

in A. Gray et al., Syn. Fl. N. Amer. 1(2): 445. 1884.

Common names: Lyon’s pentachaeta
EndemicConservation concern
Synonyms: Chaetopappa lyonii (A. Gray) D. D. Keck
Treatment appears in FNA Volume 20. Treatment on page 48. Mentioned on page 47.

Plants 6–48 cm. Stems branched. Leaf-blades linear to narrowly elliptic or oblanceolate, 20–50 × 3–6 mm. Involucres campanulate. Phyllaries in 2–3 series, narrowly lanceolate, sparsely hirsuto-pilose. Ray-florets 17–42; corollas yellow, laminae 3–8 mm. Disc-florets 21–91; corollas yellow, narrowly funnelform, not contracted at lobes, lobes 5. Pappi of 8–12 bristles, weakly dilated at bases. 2n = 18.


Phenology: Flowering Mar–Apr.
Habitat: Grassy coastal hills
Elevation: 20–700 m

Discussion

Of conservation concern.

Selected References

None.

Lower Taxa

None.
... more about "Pentachaeta lyonii"
sparsely +  and eglandular +
hirsuto-pilose +  and glabrous +
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Guy L. Nesom +
A. Gray in A. Gray et al. +
decurrent +
compound +  and simple +
narrowly oblanceolate;linear or filiform +
rugulose +  and muricate +
Lyon’s pentachaeta +
not 2-lipped +  and actinomorphic +
subterete +  and slightly compressed +
fertile +  and bisexual +
fertile +  and bisexual +
20–700 m +
pilose +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Grassy coastal hills +
discoid +  and disciform +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
campanulate +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
oblanceolate;elliptic +
cauline +  and basal +
triangular +
2-carpellate +
persistent +
Flowering Mar–Apr. +
hirsuto-pilose +
lanceolate +
in A. Gray et al., Syn. Fl. N. Amer. +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
exalbuminous +
unequal +
Endemic +  and Conservation concern +
erect +  and ascending +
sparsely villous +  and tomentose +
appendaged +  and truncate +
papillate +  and smooth +
Chaetopappa lyonii +
Pentachaeta lyonii +
Pentachaeta +
species +
clavate +  and linear-tubular +
2 cm20 mm <br />0.02 m <br /> (48 cm480 mm <br />0.48 m <br />) +