Acaena exigua

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

Overview

Critically Endangered

Common Names

Description

Family Rosaceae

Trees , shrubs , or herbs, deciduous or evergreen . Stems erect , scandent , arching , prostrate , or creeping , armed or unarmed . Buds usually with several exposed scales , sometimes with only 2. Leaves alternate, rarely opposite, simple or compound ; stipules paired , free or adnate to petiole , rarely absent, persistent or deciduous; petiole usually 2-glandular apically; leaf blade often serrate at margin , rarely entire. Inflorescences various, from single flowers to umbellate , corymbose , racemose or cymose-paniculate. Flowers usually actinomorphic , bisexual , rarely unisexual and then plants dioecious. Hypanthium (formed from basal parts of sepals, petals, and stamens) free from or adnate to ovary, short or elongate . Sepals usually 5, rarely fewer or more, imbricate; epicalyx segments sometimes also present. Petals as many as sepals, inserted below margin of disk, free, imbricate, sometimes absent. Disk lining hypanthium, usually entire, rarely lobed . Stamens usually numerous , rarely few, always in a complete ring at margin of or above disk; filaments usually free, very rarely connate ; anthers small, didymous , rarely elongate, 2-locular. Carpels 1 to many, free, or ± connate and then adnate to inner surface of cupular receptacle; ovary inferior, semi-inferior, or superior; ovules usually 2 in each carpel, rarely 1 or several, anatropous , superposed . Styles as many as carpels, terminal , lateral , or basal, free or sometimes connate. Fruit a follicle, pome, achene, or drupe, rarely a capsule, naked or enclosed in persistent hypanthium and sometimes also by sepals. Seeds erect or pendulous, sometimes winged , usually exalbuminous , very rarely with thin endosperm; cotyledons mostly fleshy and convex abaxially, rarely folded or convolute.

Between 95 and 125 genera and 2825-3500 species: cosmopolitan , mostly in N temperate zone; 55 genera (two endemic) and 950 species (546 endemic) in China.

Many plants of this family are of economic importance and contribute to people s livelihoods. The Rosaceae contain a great number of fruit trees of temperate regions . The fruits contain vitamins, acids, and sugars and can be used both raw and for making preserves, jam, jelly, candy, various drinks, wine, vinegar, etc. The dried fruits of the genera

Amygdalus and Armeniaca are of high commercial value. Some plants in the genus Rosa containing essential oils or with a high vitamin content are used in industry . Rosaceae wood is used for making various articles, stems and roots are used for making tannin extract, and young leaves are used as a substitute for tea. Numerous species are used for medical purposes or are cultivated as ornamentals .

The Rosaceae are very well represented in China, with great economic and scientific importance. The Co-chairs of the Editorial Committee (Wu and Raven) here note that the patterns of relationship are complex and the group is taxonomically difficult. [1]

Physical Description

Biology

Reproduction

Duration: Perennial

Taxonomy

Unambiguous Synonyms

1. Acaena exigua var. glaberrima Bitter
2. Acaena exigua var. glabriuscula Bitter
3. Acaena exigua var. subtusstrigulosa Bitter

Notes

Name Status: Provisionally Accepted Name . Latest taxonomic scrutiny: –

Name verified on

Place of publication : C. Wilkes, U.S. Expl. Exped., Phan. 15:498. 1854

Name verified on 07-Jul-1994 by ARS Systematic Botanists. Last updated: 10-Sep-2003

Similar Species

Members of the genus Acaena

ZipcodeZoo has pages for 493 species, subspecies, varieties, forms, and cultivars in this genus. Here are just 100 of them:

A. acris · A. acrobyssina · A. aculeata · A. adscendens · A. adscendens 'Glauca' · A. adscendens subsp. cardiostemon · A. adscendens var. majuscula · A. agnipila · A. agnipila var. aequispina · A. agnipila var. agnipila · A. agnipila var. protenta · A. agnipila var. tenuispica · A. alpina · A. alpine · A. andicola · A. andina · A. anserinacea · A. anserinifolia · A. anserinifolia subsp. anserinifolia · A. anserinifolia subsp. elata · A. anserinifolia subsp. epoligotricha · A. anserinifolia subsp. interruptepinnata · A. anserinifolia subsp. oleosenitens · A. anserinifolia subsp. utrinquestrigulosa · A. anserinifolia var. antarctica · A. anserinifolia var. brevifoliolata · A. anserinifolia var. microphylla (Biddy Biddy) · A. anserinifolia var. paucidens · A. anserinifolia var. robusta · A. anserinifolia var. sericeinitens · A. anserinifolia var. subincisa · A. anserinifolia x inermis · A. anserovina · A. antarctica · A. aquatica · A. argentea · A. argentea f. epargyrea · A. argentea f. nigricans · A. argentea f. viridis · A. argentea forma epargyrea · A. argentea forma nigricans · A. argentea forma viridis · A. argentea var. brevifoliolata · A. argentea var. breviscapa · A. argentea var. contracta · A. argentea var. coriacea · A. argentea var. gracilis · A. argentea var. gracillima · A. argentea var. grandiceps · A. argentea var. humilis · A. argentea var. interruptepinnata · A. argentea var. lanigera · A. argentea var. pluribracteata · A. argentea var. subcalvescens · A. ascendens · A. asthenoglochin · A. australis · A. basibullata · A. behriana · A. berteriana · A. boliviana · A. 'Breisgau' · A. brunnescens · A. buchanani · A. buchananii (New Zealand Burr) · A. buchananii f. erubescens · A. buchananii forma erubescens · A. buchananii longissimefilamentosa · A. buchananii var. inermis · A. buchananii var. picta · A. buchanii · A. cadilla · A. cadilla f. epistemonocoma · A. cadilla f. pusilla · A. cadilla forma epistemonocoma · A. cadilla forma pusilla · A. caesiglauca · A. caesiiglauca (New Zealand Bur) · A. caesiiglauca 'Frikart' · A. caesiiglauca var. pilosa · A. caespitosa · A. calcitrapa · A. californica · A. calvivagina · A. capitata · A. closiana · A. confertissima · A. coxi · A. craspedotricha · A. cunctatrix · A. cylindristachya · A. cylindristachya subvar. pusilla · A. cylindristachya var. composita · A. cylindristachya var. macrophyllidion · A. cylindristachya var. nitidissima · A. cylindristachya var. pilosinervis · A. cylindrostachya · A. decumbens · A. decumbens x tenera · A. decumbens x tenera

More Info

• Search for Pictures: images.google.com
• Search for Scholarly Articles: Google Scholar
• Search using Scientific Name and Vernacular Names: All the Web | AltaVista Canada | AltaVista | Excite | Google | HotBot | Lycos
• Search using Specialized Databases: GenBank | Medline | Scirus | CISTI/CAL | Agricola Periodicals | Agricola Books

Further Reading

• Annales botanices systematicae. Auctore Guilielmo Gerardo Walpers. Lipsiae, Sumtibus F. Hofmeister, 1848-68. LAT url p. 664.
• Memoirs read before the Boston Society of Natural History. Boston[Boston Society of Natural History]1862-1878. ENG url p. 534, p. 541.
• Proceedings of the American Academy of Arts and Sciences. Boston: Metcalf and Co., 1846-1958 ENG url p. 509, p. 509.
• The American botanist: a monthly journal for the plant lover. Binghamton, N.Y.: Willard N. Clute & Co., 1901-1948. ENG url p. 46.
• United States Fish and Wildlife Service. U.S. Fish & Wildlife Service. Species Information: threatened and endangered animals and plants - on-line resource. (US Fish & Wildl List)
• Wagner, W. L. et al. 1990. Manual of the flowering plants of Hawai'i. (F Hawaii)
• Wagner, W. L. et al. 1999. Hawaiian vascular plants at risk:1999. Bishop Mus. Occas. Pap. 60:45.
• Yü Te-tsun, Lu Ling-ti, Ku Tsue-chih, Li Chao-luan, Kuan Ke-chien & Chiang Wan-fu. 1974, 1985, 1986. Rosaceae. In: Yü Te-tsun, ed., Fl. Reipubl. Popularis Sin. 36: 1443; 37: 1516; 38: 1133.

Notes

Contributors

• Brands, S.J. (comp.) 1989-2007. Systema Naturae 2000. The Taxonomicon. Universal Taxonomic Services, Amsterdam, The Netherlands. Accessed September 17, 2007.
• Global Biodiversity Information Facility. Accessed January 27, 2008. http://www.gbif.org Mediated distribution data from provider.
• Nghia, N.H. 1998. Dalbergia entadoides. In: IUCN 2006. 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 20 October 2006.
• Nielsen IC & Rico ML, 1994 (from ILDIS).
• Pippen, Jeffrey S. Jeff's Nature Page. Accessed December 8, 2007.
• Podlech D, 1996 (from ILDIS).
• Polhill RM, 1993 (from ILDIS).
• Rhytismatales database 2006.
• Schrire BD, 1994-10 (from ILDIS).
• Sokoloff DD, 2001-03 (from ILDIS).
• Stirton CH, 2001-06 (from ILDIS).
• The Global Lepidoptera Names Index2, 12.2, 2005.
• The International Plant Names Index. Accessed Jan 19, 2007.
• The Virtual Field Herbarium.
• Thomson, Christian (from Diptera).
• USDA, ARS, National Genetic Resources Program. Germplasm Resources Information Network - (GRIN) [Online Database]. National Germplasm Resources Laboratory, Beltsville, Maryland. URL (April 24, 2008)
• USDA, NRCS. 2005. The PLANTS Database, Version 3.5 (http://plants.usda.gov). National Plant Data Center, Baton Rouge, LA 70874-4490 USA.
• van der Maesen LJG, 1993 (from ILDIS).
• van der Maesen, LJG, 2001-03 (from ILDIS).
• Vaz AMSF, 2001-05 (from ILDIS).
• World Conservation Monitoring Centre 1998. Adenanthera intermedia. In: IUCN 2006. 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 20 October 2006.

Data Sources

Accessed through GBIF Data Portal January 30, 2008:

• USDA PLANTS, USDA PLANTS Database

Identifiers

• Biodiversity Heritage Library NamebankID: 2663327
• Catalogue of Life Accepted Name Code: IOP-Ros-25-300003498
• GRIN Nomen Number: 320285
• Integrated Taxonomic Information System (ITIS) Taxonomic Serial Number (TSN): 182028
• International Plant Names Index (IPNI) ID: 719991-1
• Natural Heritage Network Species Identifier: PDROS01030
• U.S. Fish and Wildlife Service Species Identifier: Q1SM
• U.S.D.A. Plant Symbol: ACEXG
• Zipcode Zoo Species Identifier: 12991

Footnotes

1. Cuizhi Gu, Chaoluan Li, Lingdi Lu, Shunyuan Jiang, Crinan Alexander, Bruce Bartholomew, Anthony R. Brach, David E. Boufford, Hiroshi Ikeda, Hideaki Ohba, Kenneth R. Robertson & Steven A. Spongberg "Rosaceae". in Flora of China Vol. 9 Page 46. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]

©2004-2009 the BayScience Foundation, Inc. All rights reserved.