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Dahlgrenianthus
Genus Dahlgrenianthus Friis, K.R. Pedersen, Schönenb. Pl. Syst. Evol., 260(2): 117. Sep 2006
- Name
- Dahlgrenianthus
- Rank
- Genus
- Authors (Pub.)
- Friis E. M.
Pedersen K. R.
Schönenberger J.
- Publication
- Normapolles plants: a prominent component of the Cretaceous rosid diversification [2006/9]
- Journal
- Plant Systematics and Evolution
- Volume
- 260
- Issue
- 2
- Page number
- 117
- Year
- 2006
- Parent Taxon
- [Class] Magnoliopsida
- Fossil Status
- flowers
- Type
- Dahlgrenianthus suecicus
- Diagnosis
- Flowers bisexual, actinomorphic
and hypogynous, borne on short
conical pedicels. Perianth consisting of five
tepals in one whorl. Tepals basally fused to
form a short, persistent floral cup. Stamens
five, opposite the tepals. Pollen triaperturate
and angulaperturate; oblate and triangular in
equatorial outline; isopolar or heteropolar;
apertures sometimes protruding; exoaperture
short colpi extended parallel to the polar axis;
endoaperture circular pores. Gynoecium tricarpellate
and syncarpous. Styles three and
short with simple, rounded stigmas. Ovules/
seeds one per ovary, anatropous and basally
attached. Fruit a unilocular or partly trilocular,
one-seeded nut. Seed wall thinly membranous.
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