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Rigbya arberioides
Rigbya arberioides Lacey, Dijk, Gordon-Gray Ann. Natal Mus., 22(2): 409. 14 Nov 1975
- Name
- Rigbya arberioides
- Rank
- Species
- Generic Name
- [Genus] Rigbya
- Authors (Pub.)
- Lacey W. S.
van Dijk D. E.
Gordon-Gray K. D.
- Publication
- Fossil plants from the Upper Permian in the Mooi River district of Natal, South Africa [1975/11]
- Journal
- Annals of the Natal Museum
- Volume
- 22
- Issue
- 2
- Page number
- 409
- Year
- 1975
- Fossil Status
- fructifications (female)
- Stratigraphy
- Lopingian
- Location
- Mooi River district, Natal, South Africa
- Paleoregion
- Gondwana (South Africa)
Data for Holotypus
- Repository
- KwaZulu-Natal Museum, Pietermaritzburg, South Africa
- Repository Number
- NM 1669
- Diagnosis
- Female fructification consisting of a stalk bearing a terminal flabellate aggregation of seed-bearing scales. Stalk, its branches and terminal scales all longitudinally striated. Stalk slender,canaliculate, about 0,5 to 1,0 mm wide, slightly expanded at the base, usually straight, occasionally slightly curved, attaining at least 5 cm in length, expanded at the distalend up to about 4 mm, then dividing repeatedly, with close dichotomies, to form adorsiventral flabellate cluster of five to ten, most frequently six, distal scales. Scales 0,5 to 1,3 cm, most frequently 0,8 cm long, 2 to 3 mm wide, expanding froma narrow base to become elongate-spathulate and usually terminating in two pointed lobes. Scales convex, swollen at right angles to the flattened plane of the fructification, each enveloping one seed at its base (perhaps representing a one-seeded cupule). Seeds 3,0 to 3,5 mm long and 2,5 to 3,0 mm wide, ovoid, flattened, but not winged,
