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Eriospermaceae

  • P. L. Perry
  • P. J. Rudall
Chapter
Part of the The Families and Genera of Vascular Plants book series (FAMILIES GENERA, volume 3)

Abstract

Geophytic, tuberous perennial herbs with leaves hysteranthous or synanthous. Tuber hypocotyledonary in origin, single or multiple, sometimes with slender, rhizomelike outgrowths, flesh white, yellow, pink to maroon-red, with the growing point single or multiple, apical, basal or lateral. Leaves 1-several, with petiolelike leaf sheath, with age forming a fibrous or membranous neck; blade linear to ovate or orbicular, erect or prostrate, glabrous or pubescent, producing complex enations from the adaxial surface in some species. Flowering stem a scape, erect, with a sheathing cataphyll either subterranean or aerial and green. Inflorescence a simple raceme, straight or flexuose, few-to many-flowered. Flowers hermaphrodite, few to numerous, sometimes scented; bracts minute, membranous; pedicels accrescent, very short to long, erect-patent. Perianth white, pink or yellow, persistent; tepals 6, in 2 whorls, connate shortly at the base, rotate, campanulate or cyathiform, equal or dimorphic with outer spreading and inner erect. Stamens 6, adnate to base of tepals; filaments filiform to broadly lanceolate; anthers bithecate and tetrasporangiate, dorsifixed, versatile, subglobose to oval, introrse. Ovary superior, sessile, 3-locular, with basal septal nectaries; ovules axile, 3–6 per locule; style terete; stigma apical, small. Capsule turbinate or ovoid, emarginate, loculicidally 3-valved, valves persistent. Seeds 6–12 per capsule, oval to comma-shaped; testa fawn, densely covered with white, unicellular hairs up to 8 mm long, turning brown with age; embryo large; perisperm replacing an endosperm in the mature seed, at least in some species.

Keywords

Unicellular Hair Axile Placentation Septal Nectary Select Bibliography Plant Chromosome Number 
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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Selected Bibliography

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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • P. L. Perry
  • P. J. Rudall

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