leptosporangiate
Delicate sporangium fern type
Leptosporangiate describes ferns whose spore-producing structures (sporangia) develop from a single cell and have thin walls, typically only one cell thick.
This distinguishes most familiar ferns from the more primitive eusporangiate ferns, whose sporangia develop from multiple cells and have thicker walls.
Leptosporangiate ferns include the vast majority of living fern species.
Region between two circles
- frondLarge, segmented plant blade
- pinnaExternal ear structure
- stipeBotanical supporting axis
- laminaThin flat layer
rhizome · fiddlehead · receptacle · rachis · crozier · blade · costa
Haploid reproductive generation
- alternationSequential interchange of elements
- meiosisGamete-producing cell division
- haploidSingle chromosome complement
- diploidTwo complete chromosome sets
fertilization · zygote · spore · germination · dispersal · tetrad · megaspore
Coarse, spreading fern
- maidenhairDelicate woodland fern
- tree fernArborescent spore-bearer
- staghornBranching cervid headgear
- Boston fernArching houseplant variety
Non-parasitic botanical hitchhiker
- understoryForest's lower vegetation tier
- woodlandForested land area
- humusDecayed organic soil matter
- dampnessMild presence of water
shade-tolerant · tropical · temperate · rainforest · streambank · rockface · canopy · moisture
Systematic grouping by traits
- phylogenyEvolutionary relationships among organisms
- cladisticsClassification by common descent
- monophyleticFrom one ancestral lineage
- systematicsScience of classifying organisms
annulus
Region between two circles
lamina · rhizome · fiddlehead · receptacle · rachis · crozier · blade · costa
gametophyte
Haploid reproductive generation
- alternationSequential interchange of elements
- meiosisGamete-producing cell division
- haploidSingle chromosome complement
diploid · fertilization · zygote · spore · germination · dispersal · tetrad · megaspore
bracken
Coarse, spreading fern
- maidenhairDelicate woodland fern
- tree fernArborescent spore-bearer
- staghornBranching cervid headgear
epiphyte
Non-parasitic botanical hitchhiker
- understoryForest's lower vegetation tier
- woodlandForested land area
- humusDecayed organic soil matter
dampness · shade-tolerant · tropical · temperate · rainforest · streambank · rockface · canopy · moisture · colonizer
classification
Systematic grouping by traits
- phylogenyEvolutionary relationships among organisms
- cladisticsClassification by common descent
- monophyleticFrom one ancestral lineage
- fernsfern, frond, fronds, bracken, maidenhair fern