Madia radiata

• Overview
• Interesting Facts
• Common Names
• Description
• Biology
• Taxonomy
• Similar Species
• More Info
• Further Reading
• Notes

Overview

Threatened

Interesting Facts

Common Names

Description

Family Compositae

The largest family of flowering plants , the Compositae (Asteraceae), comprising about 1,100 genera and more than 20,000 species and characterized by many small flowers arranged in a head looking like a single flower and subtended by an involucre of bracts. A head may consist of both ray flowers and disk flowers, as in the sunflower, of disk flowers only, as in the burdock, or of ray flowers only, as in the dandelion.

Genus Madia

Annuals , 5-250 cm. Stems erect . Leaves mostly cauline (at flowering) proximal opposite (often in rosettes), distal alternate; sessile; blades lanceolate or oblong-linear to linear , margins usually entire, sometimes toothed , faces hirsute to strigose , usually glandular-pubescent as well. Heads usually radiate (sometimes discoid in M. glomerata), in corymbiform , paniculiform , racemiform , or spiciform arrays or in glomerules . Peduncular bracts: pit-glands, tack-glands, and/or spines 0. Involucres ellipsoid , depressed-globose, globose , obconic, ovoid , or urceolate , 1-10+ mm diam. Phyllaries 0 (then outer paleae functioning as phyllaries, sometimes in M. glomerata), or 1-22 in 1 series (lance-linear to lance-attenuate or oblanceolate , herbaceous, each mostly or wholly enveloping a subtended ray ovary, abaxially hirsute and, usually, glandular ). Receptacles flat to convex , glabrous or setulose , paleate (paleae persistent or falling readily, in 1 series between rays and discs, ± connate or distinct , phyllary-like, more scarious ). Ray florets 0 (sometimes in M. glomerata), or 1-22, pistillate , fertile ; corollas yellowish (with maroon bases sometimes in M. elegans; purplish red sometimes in M. sativa). Disc florets 1-80+, bisexual and fertile or functionally staminate ; corollas usually yellow, sometimes purplish, tubes shorter than or about equaling funnelform throats , lobes 5, deltate (anthers ± dark purple or yellow to brownish; styles glabrous proximal to branches). Ray cypselae compressed , ± 3-angled, or rarely terete , clavate (often arcuate , basal attachments central or offset , apices sometimes beaked , faces glabrous) ; pappi 0. Disc cypselae similar, sometimes obovoid (often ± straight, basal attachments central, apices not beaked), sometimes 0; pappi 0. x = 8.

Species 10: North America, South America, Pacific Islands (Hawaii, probably introduced ).[1]

Physical Description

Habitat

Grasslands, openings in woodlands or chaparral , disturbed sites, usually heavy, clayey soils, often from decomposed shale; of conservation concern; 20-1200 m [2].

Biology

Reproduction

Duration: Annual

Taxonomy

Synonyms

Anisocarpus radiatus (Kellogg) Greene

Notes

Name Status: Accepted Name .

Comment: Data Providers: Govaerts World Compositae Checklist A-G, IPNI, Tropicos. GCC LSID: urn :lsid:compositae.org:names:5B22EE99-843D-4851-8A9C-7626B36DBDD5

Last scrutiny: 15-Aug-09

Similar Species

Members of the genus Madia

ZipcodeZoo has pages for 21 species, subspecies, varieties, forms, and cultivars in this genus:

M. anomala (Plump-Seed Tarweed) · M. bolanderi (Bolander's Madia) · M. citrigracilis (Shasta Tarweed) · M. citriodora (Lemon-Scent Tarweed) · M. doris-nilesiae (Doris Niles Madia) · M. elegans densifolia (Common Madia) · M. elegans vernalis (Common Madia) · M. elegans wheeleri (Common Madia) · M. exigua (Little Tarweed) · M. glomerata (Cluster Tarweed) · M. gracilis (Grassy Tarweed) · M. hallii (Hall's Madia) · M. madioides (Woodland Madia) · M. minima (Least Tarweed) · M. nutans (Nodding Madia) · M. radiata (Golden Madia) · M. rammii (Ramm's Madia) · M. sativa (Chile Tarweed) · M. stebbinsii (Stebbins' Madia) · M. subspicata (Slender Tarweed) · M. yosemitana (Yosemite Tarweed)

More Info

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Further Reading

• 1997 IUCN red list of threatened plants Cambridge: IUCN, World Conservation Union, 1998 url p. 182.
• A flora of western middle California, Berkeley, Cal., Encina Publishing Company, 1901. url , .
• Annual record of science and industry. New York: Harper & Brothers, 1872-[1879] url p. 356.
• Bulletin of the California Academy of Sciences. [S.l.: The Academy], 1884- url p. 140.
• Bulletin. California Academy of Sciences. San Francisco. San Francisco url p. 140.
• California fish and game. [San Francisco, etc.]: State of California, Resources Agency, Dept. of Fish and Game. url .
• Catalogue of scientific papers (1800-1900) Comp. by the Royal society of London. Cambridge, C. J. Clay and sons, 1867-1902; url p. 63.
• Catalogue of scientific papers, 1800-1900. Compiled by the Royal Society of London. London, C.J. Clay and Sons, 1867-1902 [etc.] Cambridge, Cambridge University Press, 1914-25. url p. 63.
• Flora Franciscana. An attempt to classify and describe the vascular plants of middle California. By Edward L. Greene. San Francisco, Cubery & Co., Printers, 1891-97. url p. 416.
• Muhlenbergia. Chico, Calif. [etc] url p. 154.
• Proceedings of the California Academy of Sciences. San Francisco, The Academy. url p. 190, p. 308.
• The Gardener's monthly and horticultural advertiser. Philadelphia [Pa.: s.n.1859-1875] url p. 156.
• Zoe:a biological journal. San Diego, Calif. [etc.]Zoe Publishing Co. url p. 154.

Notes

Contributors

• Brands, S.J. (comp.) 1989-present. The Taxonomicon. Universal Taxonomic Services, Zwaag, The Netherlands. Accessed January 12, 2012.

Data Sources

Accessed through GBIF Data Portal February 15, 2008:

• Berkeley Natural History Museums, University and Jepson Herbaria DiGIR provider
• USDA PLANTS, USDA PLANTS Database

Identifiers

• Biodiversity Heritage Library NamebankID: 2658980
• Catalogue of Life Accepted Name Code: Ast-14943
• Global Biodiversity Information Facility Taxonkey: 13750081
• Globally Unique Identifier: urn:lsid:ipni.org:names:231624-1
• Integrated Taxonomic Information System (ITIS) Taxonomic Serial Number (TSN): 38038
• Natural Heritage Network Species Identifier: PDAST650E0
• U.S.D.A. Plant Symbol: MARA
• Zipcode Zoo Species Identifier: 48823

Footnotes

1. Bruce G. Baldwin, John L. Strother "Madia". in Flora of North America Vol. 21 Page 255, 257, 295, 296, 298, 300, 302, 303, 304. Oxford University Press. Online at EFloras.org. [back]
2. "Madia radiata". in Flora of North America Vol. 21 Page 285, 304, 305. Oxford University Press. Online at EFloras.org. [back]

©2004-2012 David Stang. All rights reserved.