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Anemia adiantifolia

(Pine Fern)

Overview

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Interesting Facts

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Common Names

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Common Names in English:

Pine Fern, Pineland Fern

Description

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Family Anemiaceae

Plants terrestrial or on rock. Stems compact or short-creeping, horizontal, solenostelic (having phloem on both sides of xylem) or dictyostelic (having complex nets of xylem), clothed with orange to reddish brown hairs . Leaves erect [rarely forming a flat rosette], partially to entirely dimorphic . Sporangia in 2 rows on ultimate segments of fertile pinnae, sessile, oblong ; annulus apical. Spores tetrahedral-globose, with parallel or rarely anastomosing ridges . Gametophytes terrestrial, green, cordate with unequal lobes .

Genera 2, species 119 (1 genus, 3 species in the flora ) : widespread in tropical and subtropical regions.[1]

Genus Anemia

Stems short-creeping, horizontal, clothed with dark hairs . Leaves partially dimorphic with sporangia restricted to erect , dissected , most proximal pair of pinnae arising from petiole just below sterile part of blade or leaves fully dimorphic and blade tissue lacking on fertile leaves. Blade 1--3-pinnate, papery to leathery. Veins free [anastomosing]. x = 38.

Species 117: tropical and subtropical regions, North America, Mexico, West Indies, Central America, South America, 1 in Asia in s India, 10 in Africa.

Anemias are most abundant in Brazil (ca. 70 spp. ) and have a secondary center of diversity in Mexico (20 spp.). They are limited in the flora to peninsular Florida and the Edwards Plateau , Texas. All 3 species belong to the calciphilic subgenus Anemiorrhiza.[2]

Physical Description

Species Anemia adiantifolia

Stems ca. 2 mm diam. Leaves partially dimorphic (sporangia limited to proximal pair of pinnae), 17--85 × 7--35 cm, sterile leaves (excluding erect fertile pinnae) 17--60 cm. Petiole straw-colored to chestnut brown, 1/2--2/3 length of leaf, 1--1.4 mm wide, hirsute to glabrous . Blade deltate, 3-pinnate, leathery. Pinnae 10--18 pairs, alternate to subopposite, segments oblanceolate , base cuneate, margins minutely denticulate , apex obtuse , pilose with stiff white hairs . Fertile pinnae usually taller than sterile blades. Spores with ridges ± parallel, distant . 2 n = 76, 114, 152. [source]

Habit: Forb/herb

Habitat

Terrestrial on open to lightly shaded, rocky slopes and in hammocks and pine woods , often on limestone; 0--30 m [3].

Typically found at an altitude of 0 to 2,382 meters (0 to 7,815 feet).[4]

Biology

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Reproduction

Duration: Perennial

Taxonomy

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Synonyms

Draba eurycarpa A. Gray • Ornithopteris adiantifolia (L.) Bernh. • Osmunda adiantifolia Linnaeus • Parrya eurycarpa (Gray) Jepson • Phoenicaulis eurycarpa (Gray) Abrams

Notes

Publishing author : Sw. Publication : Syn. Fil. (Swartz) 157. 1806; HB. 434. Prantl, Schiz. 126. Chr. 349. NPfl. 371 1806

Basionym author: (L.)

Similar Species

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Members of the genus Anemia

ZipcodeZoo has pages for 7 species, subspecies, varieties, forms, and cultivars in this genus:

A. adiantifolia (Pine Fern) · A. cicutaria (Hemlock Fern) · A. hirsuta (Hairy Flowering Fern) · A. hirta (Streambank Flowering Fern) · A. mexicana (Mexican Fern) · A. portoricensis (Puerto Rico Flowering Fern) · A. wrightii (Parsley Fern)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal November 16, 2007:

Identifiers

Footnotes

  1. John T. Mickel "Anemiaceae". in Flora of North America Vol. 2. Oxford University Press. Online at EFloras.org. [back]
  2. John T. Mickel "Anemia". in Flora of North America Vol. 2. Oxford University Press. Online at EFloras.org. [back]
  3. "Anemia adiantifolia". in Flora of North America Vol. 2. Oxford University Press. Online at EFloras.org. [back]
  4. Mean = -79.630 meters (-261.253 feet), Standard Deviation = 1,055.010 based on 202 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 7/15/2012