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