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Divisestylus
Genus Divisestylus Hermsen, Gandolfo, Nixon, Crepet Amer. J. Bot., 90(9): 1374. 15 Sep 2003
- Name
- Divisestylus
- Rank
- Genus
- Authors (Pub.)
- Hermsen E. J.
Gandolfo M. A.
Nixon K. C.
Crepet W. L.
- Publication
- Divisestylus gen. nov. (aff. Iteaceae), a fossil saxifrage from the Late Cretaceous of New Jersey, USA [2003/9]
- Journal
- American Journal of Botany
- Volume
- 90
- Issue
- 9
- Page number
- 1374
- Year
- 2003
- Parent Taxon
- [Family] Saxifragaceae
- Fossil Status
- flowers (bisexual)
- Type
- Divisestylus brevistamineus
- Diagnosis
- Flowers bisexual or possibly functionally unisexual, actinomorphic, epigynous and pedicellate; sepals five, basally connate into a hypanthium, free above, with valvate aestivation; petals five, free, alternate with the sepals, with imbricate aestivation; stomata anomocytic; androecium
haplostemonous, stamens/staminodes five, opposite sepals; anthers
dithecal, tetrasporangiate, basifixed; pollen tricolpate, prolate, exine striate; gynoecium bicarpellate; ovary bilocular, inferior, placentation axile, more than 10 ovules per locule; intrastaminal nectary ring smooth; styles two, distinct and free proximally but fused distally, style canal open; stigmas capitate,
fused into a bilobed platform; fruit a two-beaked dehiscent capsule, with stigmas remaining connate or separating upon dehiscence. Vegetative morphology unknown.
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