Pentachaeta fragilis
Univ. Calif. Publ. Bot. 6: 170. 1915.
Common names: Fragile pentachaeta
Endemic
Synonyms: Chaetopappa fragilis (Brandegee) D. D. Keck
Revision as of 21:08, 29 July 2020 by imported>Volume Importer
Plants 4–16 cm. Stems diffusely branched. Leaf-blades spatulate to linear-oblanceolate, 5–15 (–25) × 1–3 mm. Involucres campanulate. Phyllaries in 2 (–3) series, elliptic to obovate, glabrous. Ray-florets 7–12; corollas yellow, laminae ca. 5 mm. Disc-florets 10–23; corollas yellow, narrowly funnelform, not contracted at lobes, lobes 5. Pappi of (8–) 15–20 bristles, not dilated at base. 2n = 18.
Phenology: Flowering Mar–Jun.
Habitat: Grassy areas
Elevation: 50–2300 m
Discussion
Selected References
None.
Lower Taxa
None.
... more about "Pentachaeta fragilis"
introrse +
connate +
distinct +
herbaceous +
scarious +
hirsute +
papillate +
continuous +
decurrent +
narrowly oblanceolate;linear or filiform +
ribbed +
stigmatic +
barbellate +
tawny +
persistent +
15;20 +
absent +
Fragile pentachaeta +
yellow +
contracted +
absent +
monomorphic +
(3-)5-ribbed +
dimorphic +
strigose +
staminate +
Calif. +
straight +
distinct +
proximal +
1;5 +
bisexual +
dispersed +
singly +
indeterminate +
surrounding +
campanulate +
5 cm50 mm <br />0.05 m <br /> (?) +
spatulate;linear-oblanceolate +
1mm;3mm +
sessile +
alternate +
erect +
triangular +
hyaline +
delimited +
2-carpellate +
inferior +
attached +
anatropous +
persistent +
not dilated +
tough +
thick +
absent +
connate +
1-nerved +
persistent +
distinct +
herbaceous +
falling +
glabrous +
unequal +
Univ. Calif. Publ. Bot. +
1915 +
pistillate +
absent +
fertile +
epaleate +
pitted +
flat;slightly convex +
fibrous +
exalbuminous +
modifed +
absent +
unequal +
equal +
Endemic +
alternate +
branched +
2-branched +
glabrous +
Pentachaeta fragilis +
Pentachaeta +
species +
shorter +
annual +