Back
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 (?).
Links by generics
Species
