« Scheuchzeriaceae » : différence entre les versions
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Dernière version du 29 février 2020 à 08:31
Herbs, perennial, rhizomatous, caulescent; turions absent. Leaves alternate, emergent, sessile; sheath with remains often persisting, auriculate; blade linear, nearly cylindric, with conspicuous round pore adaxially on leaf tip; intravaginal squamules hairs, numerous. Inflorescences terminal, bracteate racemes, not subtended by spathe; pedicels following fertilization elongating, not spiraling. Flowers bisexual; subtending bracts present; perianth present; tepals 6; stamens 6, epitepalous; anthers basifixed, distinct, dehiscing longitudinally, extrorse; pollen globose; pistils 3(–6), distinct to slightly connate at base; ovules basal-marginal, anatropous. Fruits follicles. Seeds 1–2(–3).
Distribution
{{#Distribution Maps: family
|Colder parts of the Northern Hemisphere.
|
| }} Colder parts of the Northern Hemisphere.
Discussion
Scheuchzeriaceae have sometimes been included in Juncaginaceae. That Scheuchzeria represents a family by itself is accepted by the majority of post-1940 workers (J. W. Thieret 1988).
Genus Genera 1, species 1: