The INTERNATIONAL FOSSIL PLANT NAMES INDEX
Global registry of scientific names of fossil organisms covered by the International Code of Nomenclature for Algae, Fungi, and Plants and the International Code of Zoological Nomenclature © 2014-2022

IDNAME urn:idName:ifpni.org:genus:65C95296-455C-7A8F-9D35-1DF1F2522547 genus
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Archamamelis

Genus Archamamelis P.K. Endress, Friis Pl. Syst. Evol., 175(1-2): 112. Mar 1991
Name
Archamamelis
Rank
Genus
Authors (Pub.)
Endress P. K. Friis E. M.  
Publication
Archamamelis, hamamelidalean flowers from the Upper Cretaceous of Sweden [1991/3]
Journal
Plant Systematics and Evolution
Volume
175
Issue
1-2
Page number
112
Year
1991
Parent Taxon
[Family] Hamamelidaceae
Fossil Status
flowers
Type
Archamamelis bivalvis
Diagnosis
Flower small, apparently bisexual, perhaps functionally unisexual, actinomorphic, floral parts whorled, all whorls alternating; perianth hexa- to heptamerous, epigynous or semiepigynous; calyx of 6-7 sepals (?); corolla of 6-7 petals; androecium of 6-7 stamens; anthers basifixed, not well delimited from filament, with massive sterile apex, disporangiate, opening by a valve on each side, valve hinged on the ventral side; pollen grains isopolar, spheroidal to subprolate, tricolpate with long colpi, pollen wall tectate and perforate; staminodia 6 - 7 (?); gynoecium (2-? to) 3-merous, carpels basally connate and united with the hypanthium to form a semiinferior or inferior ovary; styles free; placentation possibly axile (?); ovules possibly two (?).
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