Lasthenia conjugens
Pittonia 1: 221. 1888.
Common names: Contra Costa goldfields
EndemicConservation concern
Synonyms: Baeria fremontii var. conjugens (Greene) Ferris
Annuals, to 40 cm. Stems erect, branched distally, glabrous or sparsely hairy. Leaves linear, 10–80 × 1–2+ mm (simple blades or single lobes), margins entire or pinnately lobed, faces glabrous. Involucres hemispheric or obconic, 6–10 mm. Phyllaries 12–18 (connate 1/4–1/2 their lengths), ± lanceolate, puberulent to glabrate. Receptacles dome-shaped or obconic, densely hairy. Ray-florets 6–13; laminae oblong to oval, 5–10 mm. Anther appendages linear to ± ovate. Cypselae black or gray (reflective), clavate, to 1.5 mm, glabrous; pappi 0.2n = 12.
Phenology: Flowering Mar–Jun.
Habitat: Vernal pools and wet meadows
Elevation: 0–100 m
Discussion
Of conservation concern.
Lasthenia conjugens often germinates under water in vernal pools; first leaves are submerged and entire; later, aerial leaves are pinnatifid.
Selected References
None.
Lower Taxa
None.
... more about "Lasthenia conjugens"
introrse +
connate +
herbaceous +
scarious +
absent +
hirsute +
papillate +
dilute +
continuous +
decurrent +
lobed +
winged;ribbed;winged;ribbed +
1;15 +
stigmatic +
absent +
Contra Costa goldfields +
zygomorphic +
dimorphic +
glabrous +
papillate +
clavate +
0mm;1.5mm +
staminate +
Calif. +
straight +
glabrous +
distinct +
yellow +
proximal +
1;5 +
bisexual +
dispersed +
singly +
disciform +
indeterminate +
surrounding +
obconic;hemispheric +
entire +
opposite +
cauline +
pinnatifid +
glabrous +
papillate +
deltate +
2-carpellate +
inferior +
attached +
anatropous +
persistent +
falling +
absent +
tough +
thick +
absent +
connate +
scarious-margined +
persistent +
distinct +
herbaceous +
falling +
unequal +
equal +
Pittonia +
1888 +
pistillate +
absent +
fertile +
yellow +
epaleate +
hairy +
obconic;dome--shaped +
fibrous +
exalbuminous +
modifed +
alternate +
branched +
erect +
2-branched +
papillate +
Lasthenia conjugens +
Lasthenia sect. Ornduffia +
species +
campanulate +
equaling +
shorter +
annual +