Perideridia howellii

• Common Names
• Description
• Biology
• Taxonomy
• Similar Species
• Bibliography
• More Info
• Notes

Common Names

Description

Family Apiaceae

Herbs, annual or perennial , rarely woody at base . Caulescent or acaulescent , stem hollow or solid. Leaves alternate, rarely opposite or basal; petiole usually sheathing at base; stipules absent (except in subfam. Hydrocotyloideae) ; leaf blade compound or sometimes simple , usually much incised or divided , pinnatifid to pinnatisect , or ternate-pinnately decompound . Flowers epigynous , small, bisexual or staminate (unisexual male), regular, in simple or compound umbels; umbellules few to many-flowered; rays often subtended by bracts forming a involucre; umbellules (sometimes called umbellets ) usually subtended by bracteoles forming an involucel . Pedicels long, short or obsolete (then forming a capitate umbellule) . Calyx tube wholly adnate to the ovary; calyx teeth (sometimes called sepals) small or obsolete, forming a ring around the top of the ovary. Ovary inferior, 2-celled, with one anatropous ovule in each locule. Styles 2, usually swollen at the base forming a stylopodium which often secretes nectar. Fruit dry, of two mericarps united by their faces (commissure ), and usually attached to a central axis (carpophore), from which the mericarps separate at maturity; mericarps are variously flattened dorsally , laterally or terete ; each mericarp has 5 primary ribs , one down the back (dorsal rib), two on the edges near the commissure (lateral ribs), and two between the dorsal and lateral ribs (intermediate ribs), occasionally with four secondary ribs alternating with the primary, the ribs filiform to broadly winged , thin or corky; vittae (oil-tubes) usually present in the furrow (intervals between the ribs sometimes called the valleculae) and on the commissure face, rarely also in the pericarp, sometimes obscure . Each mericarp 1-seeded, splitting apart at maturity. Seed face (commissural albumen) plane , concave to sulcate .

Between 250 and 440( 455) genera and 3300 3700 species: widely distributed in the temperate zone of both hemispheres, mainly in Eurasia and especially in C Asia; 100 genera (ten endemic) and 614 species (340 endemic) in China.Menglan She, Fading Pu, Zehui Pan, Mark Watson, John F. M. Cannon, Ingrid Holmes-Smith, Eugene V. Kljuykov, Loy R. Phillippe & Michael G. Pimenov "Apiaceae". in Flora of China Vol. 14 Page 1. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org.

Physical Description

Biology

Reproduction

Duration: Perennial

Taxonomy

Unambiguous Synonyms

1. Perideridia howellii (Coult. & Rose) Mathias

Notes

Name Status: Accepted Name . Latest taxonomic scrutiny: 15-Mar-2000

Place of publication : Brittonia 2:244. 1936

Name verified on 06-Jun-2007 by ARS Systematic Botanists.

Similar Species

Members of the genus Perideridia

There are approximately 23 species in this genus:

P. americana (Eastern Eulophus) · P. bacigalupii (Bacigalupi's Perideridia) · P. bolanderi bolanderi (Bolander's Yampah) · P. bolanderi involucrata · P. bolanderi subsp. involucrata · P. californica (California Yampah) · P. erythrorhiza (Red-Root Yampah) · P. gairdneri (Common Yampah) · P. gairdneri gairdneri (Common Yampah) · P. gairdneri subsp. borealis · P. gairdneri var. montana · P. gairdneri var. montanum · P. gardneri · P. howellii (Howell's False-Caraway) · P. kelloggii (Kellogg's Yampah) · P. kellogii · P. lemmonii (Lemmon's Yampah) · P. leptocarpa (Narrow-Seeded Yampah) · P. neurophylla · P. parishii (Parish's Yampah) · P. parishii latifolia (Oregon Yampah) · P. parishii subsp. latifolia · P. pringlei (Adobe Yampah)

Bibliography

• Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. (F CalifJep)

More Info

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Notes

Contributors

• Global Biodiversity Information Facility. Accessed February 02, 2008. http://www.gbif.org Mediated distribution data from 5 providers.
• MBLWHOI Library: Universal Biological Index and Organizer. uBio.org accessed July 17, 2008.
• USDA, ARS, National Genetic Resources Program. Germplasm Resources Information Network - (GRIN) [Online Database]. National Germplasm Resources Laboratory, Beltsville, Maryland. URL (April 30, 2008)

Data Sources

Accessed through GBIF Data Portal February 02, 2008:

• Berkeley Natural History Museums, University and Jepson Herbaria DiGIR provider
• Oregon State University, Vascular Plant Collection
• USDA PLANTS, USDA PLANTS Database

Identifiers

• Biodiversity Heritage Library NamebankID: 2653055
• Catalogue of Life Accepted Name Code: ITS-29807
• Global Biodiversity Information Facility Taxonkey: 269575
• GRIN Nomen Number: 453317
• Integrated Taxonomic Information System (ITIS) Taxonomic Serial Number (TSN): 29807
• Natural Heritage Network Species Identifier: PDAPI1N070
• U.S.D.A. Plant Symbol: PEHO5
• Zipcode Zoo Species Identifier: 54745

Footnotes

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