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Ischnophyton
Genus Ischnophyton Delev., R.C. Hope Rev. Palaeobot. Palynol., 21(1): 95. 18 Dec 1975
- Name
- Ischnophyton
- Rank
- Genus
- Authors (Pub.)
- Delevoryas T.
Hope R. C.
- Publication
- More evidence for a slender growth habit in Mesozoic cycadophytes [1975/12]
- Journal
- Review of Palaeobotany and Palynology
- Volume
- 21
- Issue
- 1
- Page number
- 95
- Year
- 1975
- Parent Taxon
- [Order] Cycadeoideales
- Fossil Status
- leafy stems
- Type
- Ischnophyton iconicum
- Diagnosis
- Plant with slender stem with slightly wrinkled surface and lacking persistent leaf bases; leaves simply compound, petiolate; petiole
4--5 cm in length, 5 mm in diameter; frond exceeding 20 cm in length, with
pinnae short proximally, larger distally, with generally parallel margins,
constricted bases, rounded, with symmetrical or asymmetrical auricles and
several veins entering each pinna; pinnae attached to adaxial surface of
rachis; veins flaring distally, dichotomously branched, especially near pinna
base. Stomata syndetocheilic, lower epidermal cells papillate, with wavy cell
walls; upper epidermis cells elongated, smooth walled.
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