Dierama atrum N.E.Br.

Species

Angiosperms > Asparagales > Iridaceae > Dierama

Characteristics

Plants 0.75-1.25 m high, solitary or a few in small tufts. Corm ± 25-30 mm diam. Stem with lowermost peduncle (55-)90-130 mm long. Foliage leaves few, 300-750 x 3.0-6.5 mm; reduced sheathing leaves 4 or 5. Spikes pendulous, terminal 4-to 8(13)-flowered, laterals 1 to 5(6), each 2-to 7(10)-flowered; bracts elliptic-lanceolate, acute to acuminate, 17-26 x 8-11 mm, < or up to 2 internodes long, lightly to heavily flecked all over but more lightly on shoulders, appearing pale brown, lateral veins 5 or 6 each side of main vein. Flowers bell-shaped with tepals suberect and flaring slightly apically, dark maroon to purple-black, rarely paler; perianth tube 8-12 mm long; tepals 15-22 x 5-9 mm. Anthers 6-9 mm long. Stigmas held 1-5 mm below top of perianth.
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Perennial herb, geophyte, 0.75-1.30 m high, stem solitary; corm 25-30 mm in diam. Leaves linear-acuminate; venation pronounced; radical leaves 300-750 x 3.0-6.5 mm; reduced sheathing leaves 4 or 5. Flowering stem 0.75-1.25 m high. Bract pale brown, 17-26 x 8-11 mm, elliptic-lanceolate, acute to acuminate, flecked. Inflorescence a raceme of spikes, pendulous, with 1-6 branches. Perianth dark maroon to purple-black, 21-32 mm long; tube 8-12 mm long; tepals 15-22 x 5-9 mm. Anthers 6-9 mm long. Flowering time Oct.-Jan.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.75 - 1.28
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

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

Cultivation

Mode -
Germination duration (days) 30 - 180
Germination temperacture (C°) 15 - 18
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Dierama atrum world distribution map, present in South Africa

Identifiers

LSID urn:lsid:ipni.org:names:436832-1
WFO ID wfo-0000789288
COL ID 3626Y
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Dierama atrum