Embryology ofEriocaulon setaceum (Eriocaulaceae)
Autor: | Govindappa D. Arekal, S. N. Ramaswamy |
---|---|
Rok vydání: | 1981 |
Předmět: | |
Zdroj: | Plant Systematics and Evolution. 138:175-188 |
ISSN: | 1615-6110 0378-2697 |
DOI: | 10.1007/bf00985181 |
Popis: | Eriocaulon setaceum can be characterized by: young microsporangium wall with epidermis, endothecium (with fibrous thickenings), and glandular tapetum (uninucleate cells); pollen grains 3-celled, spiraperturate; embryo sac development according to the Polygonum type and with antipodal cyst; endosperm nuclear; embryo small, with incipient differentiation into cotyledonary and epicotylary loci; seed coat mainly from the inner layers of the integuments; pericarp 2-layered and membranous. Embryologically, theEriocaulaceae are nearer to theXyridaceae than to otherFarinosae. Their elevation to the rank of an order,Eriocaulales, therefore appears justified. |
Databáze: | OpenAIRE |
Externí odkaz: |