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Pteridium aquilinum var. pubescens

Higher Taxonomy
Family: DennstaedtiaceaeView Description 

Common Name: BRACKEN FAMILY
Habit: Plant terrestrial; rhizome hairy [scaly], from bud near stipe base or not. Leaf: alike, glabrous or hairy (scaly); stipe strongly grooved adaxially; blade generally 1--5-pinnate; veins pinnate from midrib, generally forked beyond, free except sometimes at margin of fertile segments. Sporangia: at or near margin, generally +- covered by false indusia; true indusium 0 or inner, linear [conical or cup-, purse- or saucer-like], opening toward margin [or fused with it to form cup]; stalk cells in 1--3 rows; spores spheric or elliptic.
Genera In Family: +- 11 genera, +- 170 species: especially tropics. Note: Variously defined, now to exclude some previously included genera, species (Smith et al. 2006); Pteridium sometimes in its own family.
eFlora Treatment Author: John C. Game, Alan R. Smith & Thomas Lemieux
Scientific Editor: Alan R. Smith, Thomas J. Rosatti.
Genus: PteridiumView Description 

Common Name: BRACKEN, BRAKE
Habit: Rhizome generally deep, long-creeping, branched; often forming dense stands; dead leaves persistent; scales 0. Leaf: stipe +- black near base, with dense, +- brown hairs, straw-colored above, +- glabrous; blade 2--4-pinnate, abaxially generally hairy; pinnae with nectaries in axils or not; veins free except at margin of fertile segments. Sporangia: generally continuous except at sinuses, on vein tips and veins connecting vein tips, +- covered by false indusium (sterile segment margins similarly modified); true indusium inconspicuous or 0; spores spheric.
Species In Genus: +- 5 species: temperate, tropics. Etymology: (Greek: small fern) Note: Often considered (e.g., by Tryon) to comprise 1 +- worldwide, highly variable sp., but especially in tropics, subtrops, species seem distinct. Plants belonging to this genus are among the most common, wide-ranging in the world, are often invasive, and regenerate quickly and vigorously after fires.

Pteridium aquilinum (L.) Kuhn var. pubescens Underw.
NATIVE
Leaf: arched; stipe 10--100 cm; blade generally 15--150 cm, widely-triangular, leathery, generally 3-pinnate below, lower pinnae generally longest, +- 45° from axis; segments or lobes generally 0.5--2 cm, 3--6 mm wide, oblong, round at tip, hairs abaxially, sometimes adaxially, generally dense, straight or +- kinked, clear.
Ecology: Pastures, woodland, meadows, hillsides, partial to full sun; Elevation: < 3200 m. Bioregional Distribution: CA-FP (exc GV), Wrn; Distribution Outside California: to Alaska, South Dakota, northwestern Mexico; also eastern Canada, northeastern United States. Toxicity: TOXIC in quantity to livestock, humans; cooking removes some toxins, but carcinogens may remain. Note: Other varieties in eastern United States, Mexico, Eurasia, Africa, Pacific.
eFlora Treatment Author: John C. Game, Alan R. Smith & Thomas Lemieux
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Citation for this treatment: John C. Game, Alan R. Smith & Thomas Lemieux 2016. Pteridium aquilinum var. pubescens, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=64626, accessed on February 08, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 08, 2016.


Pteridium aquilinum var. pubescens
click for enlargement
© 2015 Steve Matson
Pteridium aquilinum var. pubescens
click for enlargement
© 2015 Steve Matson
Pteridium aquilinum var. pubescens
click for enlargement
© 2008 Keir Morse
Pteridium aquilinum var. pubescens
click for enlargement
© 2015 Steve Matson
Pteridium aquilinum var. pubescens
click for enlargement
© 2008 Keir Morse
Pteridium aquilinum var. pubescens
click for enlargement
© 2010 Keir Morse

More photos of Pteridium aquilinum var. pubescens in CalPhotos


Geographic subdivisions for Pteridium aquilinum var. pubescens:
CA-FP (exc GV), Wrn;
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.