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Lycopodiaceae
Lycopodiaceae image
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Warren H. Wagner Jr. & Joseph M. Beitel in Flora of North America (vol. 2)
Plants terrestrial, on rock, or epiphytic. Roots emerging near origin, or growing through cortex and emergent some distance from origin. Horizontal stems present or absent, mainly protostelic, in some species becoming actino- or plectostelic, on substrate surface or subterranean, or forming stolons. Upright shoots simple or branched, usually conspicuously leafy at least at base; abscising gemmae formed by reduced lateral shoots. Lateral shoots present or absent, simple or branched, branching pattern dichotomous and sometimes pseudomonopodial; leaves uniform or dimorphic or trimorphic. Upright and lateral shoots round or flat in cross section; leaves on subterranean parts flat, appressed, nonphotosynthetic, and scalelike; leaves on aerial parts appressed, ascending, or spreading, with 1 central unbranched vein, needlelike to lanceolate to ovate, remote to dense and imbricate, with or without basal and/or mucilage canals. Strobili sessile or stalked, upright, nodding, or pendent. Sporangia solitary, adaxial near leaf base or axillary; subtending leaves (sporophylls) unmodified and photosynthetic to much modified, nonphotosynthetic, reduced, and aggregated in strobili; sporangia reniform to globose, thick-walled with hundreds of spores, outer walls variously modified. Spores all 1 kind, trilete, thick-walled, surfaces pitted to small-grooved, rugulate, or reticulate. Gametophytes subterranean and nonphotosynthetic or surficial and photosynthetic. The Lycopodiaceae are an extremely diverse, ancient family. The family may contain even more than the estimated 400 species because the tropical members and the very large genus Phlegmariurus are still poorly known. The relationships among genera of Lycopodiaceae are not well understood because large evolutionary gaps exist among most genera. Some of the genera, notably Diphasiastrum , Huperzia , and Lycopodiella , exhibit extensive interspecific hybridization, which has caused much taxonomic confusion in the past. Differences in expressions of many of the generic characters are subtle, and some of the characters are microscopic.

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Show all taxa || << 1 - 50 taxa >>
Austrolycopodium erectum
Image of Austrolycopodium erectum
Austrolycopodium fastigiatum
Image of Austrolycopodium fastigiatum
Austrolycopodium magellanicum
Image of Austrolycopodium magellanicum
Dendrolycopodium dendroideum
Image of Dendrolycopodium dendroideum
Dendrolycopodium hickeyi
Image of Dendrolycopodium hickeyi
Dendrolycopodium juniperoideum
Image of Dendrolycopodium juniperoideum
Dendrolycopodium obscurum
Image of Dendrolycopodium obscurum
Diphasiastrum alpinum
Image of Diphasiastrum alpinum
Diphasiastrum complanatum
Image of Diphasiastrum complanatum
Diphasiastrum digitatum
Image of Diphasiastrum digitatum
Diphasiastrum fawcettii
Image of Diphasiastrum fawcettii
Diphasiastrum habereri
Image of Diphasiastrum habereri
Diphasiastrum issleri
Image of Diphasiastrum issleri
Diphasiastrum madeirense
Image of Diphasiastrum madeirense
Diphasiastrum multispicatum
Image of Diphasiastrum multispicatum
Diphasiastrum platyrhizoma
Image of Diphasiastrum platyrhizoma
Diphasiastrum sabinifolium
Image of Diphasiastrum sabinifolium
Diphasiastrum sitchense
Image of Diphasiastrum sitchense
Diphasiastrum thyoides
Image of Diphasiastrum thyoides
Diphasiastrum tristachyum
Image of Diphasiastrum tristachyum
Diphasiastrum verecundum
Image of Diphasiastrum verecundum
Diphasiastrum wightianum
Image of Diphasiastrum wightianum
Diphasiastrum x habereri
Image of Diphasiastrum x habereri
Diphasiastrum x issleri
Image of Diphasiastrum x issleri
Diphasiastrum x verecundum
Image of Diphasiastrum x verecundum
Diphasiastrum x zeilleri
Image of Diphasiastrum x zeilleri
Diphasiastrum zeilleri
Image of Diphasiastrum zeilleri
Diphasium alpinum
Images
not available
Diphasium chamicyparissus
Images
not available
Diphasium issleri
Images
not available
Diphasium jussiaei
Image of Diphasium jussiaei
Diphasium scariosum
Image of Diphasium scariosum
Diphasium sitchense
Images
not available
Diphasium tristachyum
Image of Diphasium tristachyum
Diphasium zeilleri
Images
not available
Huperzia acerosa
Image of Huperzia acerosa
Huperzia appalachiana
Image of Huperzia appalachiana
Huperzia appressa
Image of Huperzia appressa
Huperzia aqualupiana
Image of Huperzia aqualupiana
Huperzia attenuata
Image of Huperzia attenuata
Huperzia australiana
Image of Huperzia australiana
Huperzia beiteliana
Image of Huperzia beiteliana
Huperzia beitelii
Images
not available
Huperzia brevifolia
Image of Huperzia brevifolia
Huperzia buesii
Images
not available
Huperzia buttersii
Image of Huperzia buttersii
Huperzia carinata
Image of Huperzia carinata
Huperzia chinensis
Image of Huperzia chinensis
Huperzia christii
Image of Huperzia christii
Huperzia comans
Image of Huperzia comans
The National Science Foundation
Developments of SEINet, Symbiota, and associated specimen databases have been supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)