Microseris paludosa
Microseris campestris
marsh microseris, marsh scorzonella, marsh silverpuffs
San Joaquin microseris, San Joaquin silverpuffs
branched proximally, leafy proximally.
0.
basal and cauline; petiolate (petioles broadly winged, clasping);
blades linear to oblanceolate, 6–35 cm, margins entire, dentate, or pinnately lobed, apices acuminate.
basal; petiolate;
blades linear to narrowly elliptic or oblanceolate, 3–22 cm, margins entire, dentate, or pinnately lobed, apices acute or attenuate, faces glabrous or lightly scurfy-puberulent.
erect or arcuate-ascending (15–50 cm), ebracteate.
erect or curved-ascending, ebracteate.
ovoid in fruit, 10–20 mm.
ovoid to fusiform in fruit, 5–20 mm.
25–70;
corollas yellow-orange, surpassing phyllaries by 5+ mm.
5–120;
corollas yellow or white, equaling or surpassing phyllaries by 1–3 mm.
not spotted, abaxial faces usually scurfy-puberulent, usually black-villous;
outer linear to broadly or narrowly ovate-deltate, apices erect or recurved, acuminate;
inner lanceolate, apices erect, acute to acuminate.
apices acute to acuminate, abaxial faces glabrous;
outer deltate;
inner lanceolate (midveins often purple, thickened).
columnar, 4–7 mm;
pappi of 5–10, dull yellowish brown, lanceolate, glabrous, aristate scales 2–4 mm, aristae barbellate.
columnar, 3–5.5 mm;
pappi of 5, white or light brownish, lanceolate or ovate to deltate, aristate scales 1–4.5 mm (straight to slightly arcuate, plane or slightly involute, glabrous, midveins brown, broadened at bases, widths less than 1/5 bodies, linear distally), aristae (straw-colored or brown) barbellulate proximally, barbellate distally.
= 18.
= 36.
Microseris paludosa
Microseris campestris
Microseris paludosa in the central coastal region (D. P. Tibor 2001). It differs from M. laciniata subsp. leptosepala in its longer, brownish pappus scales and more southern coastal distribution. It is unusual among the perennial taxa of Microseris in its self-compatibility and ready self-fertilization in culture.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
The tetraploid Microseris campestris is morphologically intermediate between M. elegans and M. douglasii, and the molecular data of D. Roelofs et al. (1997) show a particularly close relationship with the former species. It is known only from the San Joaquin Valley and surrounding foothills. Diploid plants assignable to M. douglasii but with fruit morphology similar to M. campestris, found much closer to the coast near San Luis Obispo, are thought to be the result of introgression between M. douglasii and M. bigelovii (K. L. Chambers 1955).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
WildflowerSearch
iNaturalist
USDA Plants Database
