Microseris paludosa
Microseris bigelovii
marsh microseris, marsh scorzonella, marsh silverpuffs
coast microseris, coastal microseris, coastal silver puffs
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 spatulate, 3–25 cm, margins entire, dentate, or pinnately lobed, apices acuminate to obtuse, 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, 5–14 mm.
25–70;
corollas yellow-orange, surpassing phyllaries by 5+ mm.
5–100;
corollas yellow or orange, 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, 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.
truncate-fusiform, 2.5–5.5 mm;
pappi of 5 silvery to blackish, deltate to lanceolate, aristate scales 1–4 mm (slightly arched at bases, flat, glabrous, midveins linear, widths less than 1/5 bodies, thicker at bases), aristae (brown, fine) barbellulate.
= 18.
= 18.
Microseris paludosa
Microseris bigelovii
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.)
Microseris bigelovii is the most characteristically coastal of the annual taxa and the only one to include plants with obtuse, spatulate leaves (K. Bachmann et al. 1984). A statistical analysis of its morphologic variation was published by Bachmann (1992). It sometimes has been collected at inland sites at 500–600 m, where the cypselae may have been introduced by domestic animals. The northern populations near Victoria, British Columbia, and the San Juan Islands, Washington, are disjunct from the main range, which extends from Oregon to Santa Barbara County, California.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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