|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
|Family: Dennstaedtiaceae||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
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.
eFlora Treatment Author: John C. Game, Alan R. Smith & Thomas Lemieux
Jepson Online Interchange
Previous taxon: Dennstaedtiaceae
Next taxon: Pteridium aquilinum var. pubescens
Citation for this treatment: John C. Game, Alan R. Smith & Thomas Lemieux 2016. Pteridium, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=9880, accessed on February 07, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 07, 2016.