Claim · model-written summary
Continental African Viscum varies widely in pollen shape and apertures.
- Organ / stage
- pollene0
- Outcome
- wide variation in pollen shape and aperturese0
- Comparator
- Madagascan and Asian speciese0
ViscumNot reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleTreatmentSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Continental African Viscum , in contrast to Madagascan and Asian species, display a wide variation in pollen shape and apertures”
Title
FINE STRUCTURE OF MISTLETOE POLLEN. V. MADAGASCAN AND CONTINENTAL AFRICAN VISCUM L. (VISCACEAE)
Sylvia M. Feuer; Job Kuijt; Delbert Wiens American Journal of Botany 1982. doi:10.1002/j.1537-2197.1982.tb13248.x
Other claims from this paper (13)
- Observation Madagascan Viscum pollen resembles Asian pollen in overall form.
- Observation Madagascan Viscum equatorial ektexine most resembles continental African taxa.
- Observation Oblate pollen shape is unique to Africa in this comparison.
- Observation Aperture number varies within and between African Viscum populations down to individual flowers.
- Observation Simple colpate apertures in Viscum are restricted to Africa.
- Observation Group I species have tricolporate rounded convex pollen with rodlet/granular equatorial ektexine.
- Observation Group II species have multiapertures, concave lobate shape, uniform sculpturing and granular ektexine.
- Observation Four African Viscum species have no clear Group I or II affinity.
- Observation Viscum pollen characters show a trend toward spheroidal shape, multiple apertures and uniform sculpturing.
- Observation Pollen characters suggest ties among Australia, Asia and Madagascar.
- Observation Pollen characters suggest an even stronger Madagascar to continental Africa relationship.
- Observation The relationship of most African Viscum outside obvious Madagascan affinities remains obscure.
- Observation Group II pollen and inflorescence features suggest independent evolution.