Disa walleri Rchb.F.

Species

Angiosperms > Asparagales > Orchidaceae > Disa

Characteristics

Fertile shoots 60–100 cm tall; cauline leaves imbricate, grading into the floral bracts, mostly sheathing with small free blades; blades 7–8 cm long, lanceolate to narrowly ovate, acute to subacuminate.
More
An orchid. The leafy shoots are 14 cm tall. There are 1-4 leaves. The flowering shoots are 60-100 cm tall. The flowers are mauve to purple.
Spur borne horizontally from a broad conical base, soon decurved, 12–17 mm long, slender in the middle, the apex clavate or subclavate.
Sterile shoots to 14 cm tall, 1–4-leaved; leaves erect, conduplicate, 15–30 cm long, elliptic to oblanceolate, acute.
Dorsal sepal galeate; galea, rounded, erect 12–18 mm long, 8–15 mm wide and 12–16 mm deep, ovate.
Terrestrial herb with separate fertile and sterile shoots; perennating by testicular tubers.
Floral bracts overtopping the flowers, 2.5–4.5 cm long, lanceolate, acute to acuminate.
Lateral sepals 13–20 mm long, sub-oblique, oblong, sub-acute to rounded.
Flowers borne horizontally, mauve to purple, the galea spotted.
Inflorescence lax to sub-dense, 15–25 cm long, 15–30-flowered.
Petals 15–18 mm long, narrowly lanceolate, acute, erect.
Lip 11–15 mm long, linear, rounded or truncate.
Rostellum lateral lobes parallel, c. 2 mm tall.
Ovary 1.5–2.5 cm long.
Anther 5–6 mm long.
Stigma subsessile.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.14
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

It is a tropical plant.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

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

Cultivation

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

Distribution

Disa walleri world distribution map, present in Burkina Faso, Tanzania, United Republic of, Zambia, and Zimbabwe

Conservation status

Disa walleri threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:630293-1
WFO ID wfo-0000944612
COL ID 36S4N
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Disa leopoldii Disa princeae Disa walleri Disa zombaensis