Claim · model-written summary
Seed size increased in association with wing loss in Fendlera, Fendlerella and Whipplea.
Fendlera
Fendlerella
WhippleaVerbatim
e0“Seed size increased in association with wing loss in Fendlera, Fendlerella, and Whipplea.”
Title
Seed Morphology of Hydrangeaceae and Its Phylogenetic Implications
Larry Hufford International Journal of Plant Sciences 1995. doi:10.1086/297279
Other claims from this paper (14)
- Observation Eleven seed characters were defined across four morphological aspects.
- Observation Some character states could not be readily delimited, including seed transectional shape and length.
- Observation Seed length data supported seeds under 1.0 mm as ancestral and independent seed size increases in subclades.
- Mechanism Fruit wall fragmentation may have permitted larger seeds in Decumaria, Pileostegia and Schizophragma.
- Observation Seed data support monophyly hypotheses for Deutzia and Philadelphus, with apparent parallel character states.
- Observation Seed data indicate traditional Hydrangea is paraphyletic.
- Observation A derived urceolate seed form allies Broussaisia and Dichroa with H. hirta and H. luteovenosa.
- Observation Middle Oligocene European fossil seeds assigned to Dichroa may be indistinguishable from some Hydrangea seeds.
- Observation H. heteromalla and H. paniculata share derived spindle-form seeds with Decumaria and Schizophragma.
- Observation The spindle-seeded taxa may form a monophyletic group including Pileostegia.
- Observation Tropical Hydrangea section Cornidia has a derived rarity of anticlinal crosswalls in the seed body.
- Observation Micropylar cowls shared by Cardiandra, Deinanthe and Deutzia are interpreted as evolutionary parallelisms.
- Observation A derived funicular appendage supports monophyly of Fendlerella and Whipplea.
- Observation Fendlerella and Whipplea may be closest to Fendlera and share convex long-axis seed coat cells.