Adiantum vivesii

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

Overview

Endangered

Common Names

Description

Genus Adiantum

Plants terrestrial or on rock. Stems short- to long-creeping or suberect, branched; scales deep tawny yellow to dark reddish brown [black], concolored or bicolored , linear-lanceolate to lanceolate, margins entire, erose-ciliate, or minutely dentate . Leaves monomorphic to somewhat dimorphic , densely clustered to closely spaced [distant ], 15--110 cm. Petiole chestnut brown to dark purple or blackish, with single groove adaxially, glabrous , hispid , or strigose , with 1 or 2 vascular bundles . Blade lanceolate, ovate , trowel-shaped, or fan-shaped, 1--4(--9) -pinnate proximally, membranaceous to papery , both surfaces commonly glabrous (2 species with scattered hairs ), adaxially dull or shiny, not striate ; rachis straight or flexuous . Ultimate segments subsessile to short-stalked (stalks terminating in cupulelike swelling at base of pinna in A. tenerum ), round, fan-shaped, rhombic , or oblong , 3--29 mm wide; base truncate to cuneate, free from costa; stalk dark, often lustrous ; fertile segments with marginal lobes recurved to form false indusia. Veins of ultimate segments conspicuous , free, ± dichotomously forking near base and well above segment base [anastomosing in a few tropical species], parallel distally. False indusia light gray-green or brown to dark brown, narrow, 0.6--1 mm wide, marginal, concealing sporangia until sporangia dehisce. Sporangia submarginal, borne along or sometimes also between veins on abaxial surface of false indusium, paraphyses and glands absent. Spores yellow or yellowish brown, tetrahedral-globose, trilete, rugulate to rugose or tuberculate , equatorial ridge absent. x = 29, 30.

Species ca. 150--200: nearly worldwide except at latitudes greater than 60°.

Most diverse in Andean South America, Adiantum is primarily a tropical genus; of the nine species occurring in the flora , A. melanoleucum, A. tenerum, and A. tricholepis are strictly subtropical . Adiantum hispidulum occurs only as an escape from cultivation. The genus is absent from dry areas in the interior of the continent.

Adiantum is a very clearly circumscribed genus of ferns, the character state "sporangia borne on abaxial surface of false indusium" being both necessary and sufficient to define it. Within this large and widespread genus, however, species relationships are mostly unknown. An evolutionary classification of the group is indeed much needed (R. M. Tryon and A. F. Tryon 1982).[1]

Physical Description

Biology

Reproduction

Duration: Perennial

Taxonomy

Notes

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

Place of publication : Mem. New York Bot. Gard. 53:140, figs. 41-42. 1989

Name verified on 13-Dec-1994 by ARS Systematic Botanists. Last updated: 16-Aug-2006

Similar Species

Members of the genus Adiantum

ZipcodeZoo has pages for 641 species, subspecies, varieties, forms, and cultivars in this genus. Here are just 100 of them:

A. abscissum · A. achilleifolium · A. acinaciforme · A. acrocarpon · A. aculeatum · A. aculeolatum · A. acuminatum · A. adiantoides · A. aemulum · A. aethiopicum (Common Maidenhair Fern) · A. aethiopicum var. nodosa · A. aetiopi · A. affine · A. africanum · A. alarconianum · A. alatum · A. aleuticum (Aleutian Maidenhair-Fern) · A. aleuticum 'Dwarf Ecotype' · A. aleuticum 'Imbricatum' · A. aleuticum 'Japonicum' · A. aleuticum 'Laciniatum' · A. aleuticum 'Miss Sharples' · A. aleuticum 'Serpentine Ecotype' · A. aleuticum subpumilum · A. aleuticum 'Subpumilum' · A. amabile · A. amazonicum · A. amblyopteridium · A. amelianum · A. americanum · A. amoenum · A. amplum · A. anceps (Double Edge Maidenhair) · A. andicola · A. aneitense · A. angustatum · A. angustifolium · A. annamense · A. apalophyllum · A. arcanum · A. arcuatum · A. argutum · A. aristatum · A. asarifolium · A. asperum · A. assimile · A. atroviride · A. aubertii · A. auriculatum · A. australe · A. baenitzii · A. balansae · A. balfourii · A. bausei · A. bellum (Bermuda Maidenhair Fern) · A. bessoniae · A. birkenheadii · A. blumenavense · A. boliviense · A. bonatianum · A. bonii · A. bonplandii · A. borbonicum · A. boreale · A. brasiliense · A. braunii · A. breviserratum · A. caffrorum · A. cajennense · A. cajennense var. stenophyllum · A. calcareum · A. candatum · A. cantoniense · A. capense · A. capillaceum · A. capillaris-veneris · A. capillatum · A. capillis-veneris · A. capillium-veneris · A. capillius-veneris · A. capillus (Common Maidenhair) · A. capillus-junonis · A. capillus-venaris · A. capillus-venensis · A. capillus-veneri · A. capillus-veneris (Southern Maidenhair Fern) · A. capillus-veneris 'Banksianum' · A. capillus-veneris 'Cornubiense' · A. capillus-veneris 'Fimbriatum' · A. capillus-veneris 'Imbricatum' (Imbricatum Southern Maidenhair Fern Adiantum Capillus-Veneris) · A. capillus-veneris L. 'Fimbriatum' (Fimbriatum Southern Maidenhair Fern Adiantum Capillus-Veneris) · A. capillus-veneris 'Mairisii' · A. capillus-veneris 'Pointonii' · A. capillus-veneris var. fissum · A. capillus-veneris var. trifidum · A. capillus-venerus · A. capillusveneris · A. capillus gorgonis · A. capilus-veneris · A. capitus-junosis

More Info

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Further Reading

• Kartesz, J. T. & R. Kartesz. 1980. A synonomized checklist of the flora of the United States, Canada, and Greenland. (L US Can)
• Proctor, G. R. 1989. Ferns of Puerto Rico and the Virgin Islands. Mem. New York Bot. Gard. 53:1-389. (Ferns PR VirgI)
• Fernald, M. L. 1950b. Adiantum capillus-veneris in the United States. Rhodora 52: 201--208.
• Paris, C. A. 1991. Adiantum viridimontanum, a new maidenhair fern in eastern North America. Rhodora 93: 105--122.
• Paris, C. A. and M. D. Windham. 1988. A biosystematic investigation of the Adiantum pedatum complex in eastern North America. Syst. Bot. 13: 240--255.
• Wagner, W. H. Jr. 1956. A natural hybrid, × Adiantum tracyi C. C. Hall. Madroño 13: 195--205.

Notes

Contributors

• Bisby, F.A., Y.R. Roskov, M.A. Ruggiero, T.M. Orrell, L.E. Paglinawan, P.W. Brewer, N. Bailly, J. van Hertum, eds (2007). Species 2000 & ITIS Catalogue of Life: 2007 Annual Checklist. Species 2000: Reading, U.K.
• Brands, S.J. (comp.) 1989-2007. Systema Naturae 2000. The Taxonomicon. Universal Taxonomic Services, Amsterdam, The Netherlands. Accessed March 28, 2007.
• Global Biodiversity Information Facility. Accessed December 29, 2007. http://www.gbif.org Mediated distribution data from provider.
• Rhytismatales database 2006.
• USDA, ARS, National Genetic Resources Program. Germplasm Resources Information Network - (GRIN) [Online Database]. National Germplasm Resources Laboratory, Beltsville, Maryland. URL (April 25, 2008)

Identifiers

• Biodiversity Heritage Library NamebankID: 2663225
• Catalogue of Life Accepted Name Code: ITS-181794
• Global Biodiversity Information Facility Taxonkey: 13729108
• Globally Unique Identifier: urn:lsid:ipni.org:names:17530220-1
• GRIN Nomen Number: 319778
• Integrated Taxonomic Information System (ITIS) Taxonomic Serial Number (TSN): 181794
• International Plant Names Index (IPNI) ID: 315242-2
• U.S. Fish and Wildlife Service Species Identifier: S01O
• U.S.D.A. Plant Symbol: ADVI4
• Zipcode Zoo Species Identifier: 19707

Footnotes

1. Cathy A. Paris "Adiantum". in Flora of North America Vol. 2. Oxford University Press. Online at EFloras.org. [back]

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