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Image of San Joaquin silverpuffs
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San Joaquin Silverpuffs

Microseris campestris Greene

Comments

provided by eFloras
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).
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 19: 340, 345, 346 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of North America @ eFloras.org
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Flora of North America Editorial Committee
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Description

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Annuals, 5–50 cm; taprooted. Stems 0. Leaves 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. Peduncles erect or curved-ascending. ebracteate. Involucres ovoid to fusiform in fruit, 5–20 mm. Phyllaries: apices acute to acuminate, abaxial faces glabrous; outer deltate; inner lanceolate (midveins often purple, thickened). Florets 5–120; corollas yellow or white, equaling or surpassing phyllaries by 1–3 mm. Cypselae 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. 2n = 36.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 19: 340, 345, 346 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Microseris campestris

provided by wikipedia EN

Microseris campestris is a species of flowering plant in the family Asteraceae known by the common name San Joaquin silverpuffs. It is endemic to California, where it grows in the San Joaquin Valley and adjacent Sierra Nevada foothills, and the central California Coast Ranges. It is a resident of grassland and open slope habitats, sometimes near vernal pools.

Description

Microseris campestris is an annual herb growing up to half a meter-1.5 feet tall from a basal rosette of erect leaves; there is no true stem. Each leaf is up to 20 centimeters long and has edges divided into many lobes.

The inflorescence is borne on a peduncle arising from ground level. The flower head contains up to 100 white or yellow ray florets. The fruit is an achene with a gray or brown, sometimes speckled body a few millimeters long. At the tip of the body is a large pappus made up of five long, bristly scales.

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Microseris campestris: Brief Summary

provided by wikipedia EN

Microseris campestris is a species of flowering plant in the family Asteraceae known by the common name San Joaquin silverpuffs. It is endemic to California, where it grows in the San Joaquin Valley and adjacent Sierra Nevada foothills, and the central California Coast Ranges. It is a resident of grassland and open slope habitats, sometimes near vernal pools.

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