Platystemon californicus — Details

Creamcups learn more about names for this taxon

Overview

Distribution

Localities documented in Tropicos sources

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Platystemon australis Greene:
Mexico (Mesoamerica)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
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Localities documented in Tropicos sources

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Platystemon californicus var. ornithopus (Greene) Munz:
United States (North America)

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Localities documented in Tropicos sources

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Platystemon californicus var. nutans Brandegee:
United States (North America)

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Platystemon californicus var. horridulus (Greene) Jeps.:
United States (North America)

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Platystemon californicus var. crinitus (Greene) Greene:
United States (North America)

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Platystemon californicus var. ciliatus Dunkle:
United States (North America)

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Localities documented in Tropicos sources

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Platystemon californicus Benth.:
Mexico (Mesoamerica)
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
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Ariz., Calif., Nev., Oreg., Utah; Mexico (Baja California).
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National Distribution

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United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Physical Description

Morphology

Description

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Plants 0.3-3 dm, pilose or hirsute, sometimes glabrate. Leaves 10-90 × 1.7-8.1 mm; blade broadly linear; margins entire; apex rounded to long-acute. Inflorescences: peduncle 3.4-25.8 cm; bud globose to ovoid-cylindric. Flowers: petals white to cream colored, sometimes with yellow tip and/or base, rarely gold overall, sometimes tinged red in age, narrowly ovate to obovate, 6-19 × 3.5-16 mm, apex acute to rounded; ovary cylindric to oblong-ellipsoid; stigmas linear, margin revolute. Capsules ellipsoid, to 1.6 cm. Seeds black, shining, smooth. 2 n = 12 (plus occasional supernumerary chromosomes).
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Diagnostic Description

Synonym

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Platystemon arizonicus Greene; P. australis Greene; P. californicus var. ciliatus Dunkle; P. californicus var. crinitus Greene; P. californicus var. horridulus (Greene) Jepson; P. californicus var. nutans K. Brandegee; P. californicus var. ornithopus (Greene) Munz; P. mohavensis Greene
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Type Information

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Syntype for Platystemon arizonicus Greene
Catalog Number: US 126844
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): C. G. Pringle
Year Collected: 1884
Locality: Santa catalina mts., Arizona, United States, North America
  • Syntype: Greene, E. L. 1903. Pittonia. 5: 190.
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Syntype for Platystemon arizonicus Greene
Catalog Number: US 3059
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): C. G. Pringle
Year Collected: 1884
Locality: Santa Catalina Mountains., Arizona, United States, North America
  • Syntype: Greene, E. L. 1903. Pittonia. 5: 190.
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Holotype for Platystemon confinis Greene
Catalog Number: US 212463
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): J. W. Toumey
Year Collected: 1892
Locality: Bradashaw Mts., Arizona, United States, North America
  • Holotype: Greene, E. L. 1903. Pittonia. 5: 176.
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Holotype for Platystemon mohavensis Greene
Catalog Number: US 245531
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): M. E. Jones
Year Collected: 1884
Locality: East of Mohave Desert, Hackberry., Mohave, Arizona, United States, North America
  • Holotype: Greene, E. L. 1903. Pittonia. 5: 176.
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Holotype for Platystemon australis Greene
Catalog Number: US 3065
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): E. Palmer
Year Collected: 1889
Locality: San Quentin Bay, Baja California Norte, Mexico, North America
  • Holotype: Greene, E. L. 1903. Pittonia. 5: 191.
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Ecology

Habitat

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Open, grassy areas with loose or disturbed soil or following burns; 0-1000(-2000)m.
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Life History and Behavior

Cyclicity

Flowering/Fruiting

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Flowering early-late spring.
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Conservation

Conservation Status

National NatureServe Conservation Status

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United States

Rounded National Status Rank: NNR - Unranked

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NatureServe Conservation Status

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Rounded Global Status Rank: G5 - Secure

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Wikipedia

Platystemon

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Platystemon californicus2.jpg

Platystemon is a monotypic genus of flowering plants in the poppy family containing the single species Platystemon californicus, which is known by the common name Creamcups. It is native to Oregon, California, Arizona, Utah and Baja California, and is found in open grasslands and sandy soils.[1] It is also used as an ornamental plant for landscaping and revegetation of recently burned areas.

The annual herb is quite variable in appearance. The oppositely arranged leaves are 2 to 8 centimeters long, and in shape linear, lanceolate, or oblong. The plant is hairy in texture, sometimes with very long hairs. The inflorescence is a single flower on a tall peduncle up to 20 centimeters high. The flower has six petals which may be pure white or golden or white with large gold spots or gold tips. The center of the flower is filled with a tuftlike cluster of many thick, flattened stamens. The fruit is a capsule with several one-seeded sections that break apart.

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Notes

  1. ^ "P. californicus Benth.". Treatment from the Jepson Manual. Jepson Herberia: University of California, Berkeley. http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?Platystemon+californicus. Retrieved 26 April 2010.

References

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Notes

Comments

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This highly variable, wind-pollinated taxon has been split into as many as 57 species on the basis of characteristics showing little cohesiveness. Ecotypic variation has produced morphologic extremes ranging from semisucculent, nearly glabrous coastal forms to very robust, moderately pubescent plants of interior grassland to compact, densely pubescent plants of semidesert habitats (G. L. Hannan 1979, 1982). Several varieties are recognized in some currently used floras: Platystemon californicus var. ciliatus Dunkle, from Santa Barbara Island; P . californicus var. nutans M. Brandegee, from coastal San Diego County and Santa Rosa and Santa Cruz islands; and P . californicus var. ornithopus (Greene) Munz, from San Miguel, San Nicholas, and Santa Rosa islands. These geographically restricted morphotypes appear to result from the same sort of ecotypic variation found in many other parts of the range. Rather than naming each ecotype, it seems best to treat Platystemon as a single, highly variable species with many locally adapted, intergrading populations.
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