Dierama K.Koch

Diérame (fr)

Genus

Angiosperms > Asparagales > Iridaceae

Characteristics

Evergreen perennials with large persistent corms with coarsely fibrous tunics. Leaves several, the lower 2-3 sheathing the base (cataphylls), these often dry and becoming fibrous; foliage leaves linear, plane, with many strong parallel fibro-vascular veins, often without a midrib. Stem terete, slender and wiry, usually branched. Inflorescence a spike, the axes wiry, usually drooping, or erect; bracts scarious, solid or membranous, then often translucent, lacerate above and usually brown-streaked or veined. Flowers usually pink (also red, purple, yellow or white in southern Africa), actinomorphic, usually pendent and campanulate, with a fairly short funnel-shaped tube; tepals subequal, including the stamens and often the style. Stamens symmetrically disposed. Style exserted from the tube, seldom from perianth, the branches simple, short, filiform. Capsules globose, coriaceous. Seeds globose or lightly angled, hard, smooth and often shiny.
More
Tufted, evergreen perennial herbs. Corm depressed-globose; tunic fibrous. Leaves several, basal, linear, flat, tough, fibrous. Scape tall, slender, arching, with several pendulous, wiry branches; bracts small, scarious. Spikes lax, pendulous, few-flowered. Bracts scarious, straw-coloured with brown streaks. Flowers pendulous, actinomorphic, campanulate. Perianth tube straight, funnel-shaped; lobes equal, erect. Stamens equilateral, erect; anthers included, linear, sagittate. Style included, filiform, the 3 branches short, entire, recurved. Capsules ovoid to globose. Seeds few, globose, shiny.
Evergreen perennial. Corm with dry coats of parallel fibres. Leaves linear, rigid, grass-like, distichous. Panicle lax with slender pendulous branches. Flowers showy, each within 2 membranous spathe-valves; tube short, dilated at throat; lobes subequal, > tube. Stamens symmetrical. Style with 3 short, entire, cuneate branches. Capsule small, oblong. Seeds small, globose or angled by pressure. Spp. c. 25, of tropical and S. Africa. Adventive sp. 1.
Inflorescence consisting of spikes in a lax panicle; spikes few to many, erect or pendulous, terminal on the main axis and at the ends of wiry lateral branches of the flowering shoot; floral bracts ± solid, or scarious, and often translucent, lacerate above and usually brown-streaked or veined.
Flowers usually pink (also red, purple, yellow or white in southern Africa), actinomorphic, usually pendent and campanulate, with a fairly short campanulate perianth tube; tepals subequal; stamens, and often the style, included.
Leaves several, the lower 2–3 sheathing the stem base (cataphylls), these often dry and becoming fibrous; the foliage leaves linear, plane, with many strong parallel fibro-vascular veins, often without a midrib.
Evergreen perennial herbs with large corms, aerial parts persisting for several years; corms with coarsely fibrous tunics.
Style exserted from the perianth tube, seldom exceeding the tepal lobes; style branches simple, short, filiform.
Seeds globose or lightly angled, hard, smooth and often shiny.
Stem terete, slender and wiry, usually branched.
Stamens symmetrically disposed.
Capsules globose, coriaceous.
Life form perennial
Growth form herb
Growth support -
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 0.1 - 0.5
Mature height (meter) 1.0 - 1.5
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 7-9
Soil humidity -
Soil texture -
Soil acidity 2-8
Soil nutriment -
Hardiness (USDA) 10-11

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by divisions.
Mode divisions
Germination duration (days) 30 - 180
Germination temperacture (C°) 15 - 18
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -