Caliciflora E.M.Friis, K.R.Pedersen et P.R.Crane

Plant Fossil Names Registry Number: PFN002805

Act LSID: urn:lsid:plantfossilnames.org:act:2805

Authors: E. M. Friis, K. R. Pedersen & P. R. Crane

Rank: genus

Reference: Friis, E. M., Pedersen, K. R. & Crane, P. R. (2016): The emergence of core eudicots: new floral evidence from the earliest Late Cretaceous. – Proceedings of the Royal Society of London. Series B. Biological Sciences 283: 20161325 (9 pp.).

Page of description: 2

Type

Original diagnosis/description

Flower small, sessile, with an associated bract and two prophylls borne on a stout stalk. Staminate and pistillate organs in the same flower. Floral cup distinct. Perianth with five sepals and five petals borne on the rim of the floral cup. Sepals free, thick, with broad base and acute apex; sepal aestivation revolute-valvate. Petals free, broadening distally from a narrower base, keeled, with a thin lamina and median rib; petal aestivation open below, quincuncial above. Indumentum dense on the outer surfaces of the floral cup, sepals and petals composed of interlocking stellate hairs. Stamens in two whorls, minute with dithecate, tetrasporangiate and dorsifixed anthers. Pollen minute, tricolporate, psilate. Orbicules present. Gynoecium trimerous with three free carpels borne on the inside of the floral cup.

Etymology

Generic name from calice (Latin for cup) and flos (Latin for flower).