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Sphenocleaceae

Sphenocleaceae (Lindley) Baskerville, Affin. Pl.: 110 (1839), nom. cons.Sphenocleoideae Lindley (1836).Sphenocleeae A. Gray (1878).
  • T. G. LammersEmail author
Chapter
Part of the The Families and Genera of Vascular Plants book series (FAMILIES GENERA, volume 14)

Abstract

Erect annual glabrous herbs, up to 1.5 m tall. Roots fibrous. Stems fistulose, fleshy or spongy, freely branching. Leaves alternate, simple, exstipulate, petiolate; lamina pinnately veined, margin entire. Inflorescence a dense terminal pedunculate acropetal conico-cylindric spike. Flowers small, tetracyclic, perfect, radially symmetrical, subtended by an inconspicuous spathulate bract and a pair of linear bracteoles. Calyx synsepalous, adnate to the ovary, forming a hypanthium; lobes 5, imbricate, persistent. Corolla sympetalous, radially symmetric, white or pale yellow, urceolate-campanulate, caducous; lobes 5, imbricate. Stamens 5, alternating with the corolla lobes; filaments distinct, adnate to the middle of the corolla tube, slightly dilated at base; anthers tetrasporangiate, dithecal, basifixed, distinct. Nectary 0. Gynoecium syncarpous, 2-locular; ovary half-inferior; ovules numerous; placentae axile, spongy; style simple, short or almost wanting; stigma capitate. Fruit a circumscissile capsule, enclosed by the accrescent calyx lobes. Seeds small, oblong, yellowish brown, shining, numerous, exarillate, testa striate; embryo straight; endosperm very scanty or lacking.

Keywords

Calcium Oxalate Corolla Tube Corolla Lobe Stigma Capitate Sclerenchyma Fiber 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  1. 1.Department of Biology and MicrobiologyUniversity of Wisconsin OshkoshOshkoshUSA

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