Catanthus dolichostemon E.M.Friis, P.R.Crane et K.R.Pedersen

Plant Fossil Names Registry Number: PFN000594

Act LSID: urn:lsid:plantfossilnames.org:act:594

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

Rank: species

Genus: Catanthus E.M.Friis, P.R.Crane et K.R.Pedersen

Reference: Friis, E. M., Crane, P. R. & Pedersen, K. R. (2020): Catanthus, an extinct magnoliid flower from the Early Cretaceous of Portugal. – International Journal of Plant Sciences 182(online): 28–45.

Page of description: 30

Illustrations or figures: figs 1–7

Name is type for

Types

Original diagnosis/description

Flower pedicellate, structurally bisexual, whorled. Floral receptacle shallow. Perianth of nine tepals in three whorls of three. Three outer tepals thick, sepal-like, imbricate, and covering the inner perianth parts. Six tepals of the two inner whorls free, petallike, with a thin blade; outer petaloid tepals with a narrow base; inner petaloid tepals with a broad base. Androecium probably of 18 stamens in several whorls. Stamens with long, broad, and fleshy bases and short triangular anthers. Anthers dithecate and tetrasporangiate, with a broad connective that tapers into an apical extension; dehiscence extrorse. Anther wall with an inner lining of small spherical orbicules. Pollen circular in polar view, monoaperturate, trichotomocolpate, and monocolpate, with a distinct aperture margin and granular aperture membrane. Tectum perforate, coarsely rugulate; infratectal layer probably columellate. Gynoecium superior, apocarpous, of six carpels (rarely five), each with a restricted stigma.

Etymology

From dolichos and stemon (Greek for long and stamen).

Stratigraphy

Cretaceous, Lower Cretaceous
Almargem Formation, Early Cretaceous (Aptian–early Albian)

Locality

Portugal
Catefica (lat. 39°03′30″N, lat. 09°14′30″W), between the villages of Catefica and Mugideira, about 4 km south of Torres Vedras.