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Disa caulescens

   (Family: Orchidaceae)
   
 EDIT
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Plant Type: EDIT  Shrub
Height: 0.4m
Rarity Status:
Common
   
Preferred rainfall: Winter
Preferred altitude: 600 - 1000m
Preferred position:
Semi-shade
Tolerated soil:  
  Sand (coarse texture, drains easily)
Biome: Fynbos
 
Flowering time EDIT
x                   x x
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Flower colours
 
White
Flower type
 
  Flower info
  spikes 3-7cm. long, lax, usually rather few-flowered; bracts lanceolate, acute, 1–2cm. long; pedicels 1– 1.3cm. long; flowers small, rather membranous, white with light purple petals; dorsal sepal galeate, broadly ovate, 10-12cm. long; spur rather slender, from a conical base, about half as long as the limb; lateral sepals elliptic-oblong, obtuse, with a short conical dorsal apiculus, 10-12cm. long; petals broadly obovate-elliptic, emarginate or shortly bilobed, about 6cm. long; lip linear, subobtuse, about 7cm. long; column short; anther reclinate; rostellum short, emarginate, with a pair of divaricate arms; stigma pulvinate. Blooms in the later spring and early summer
 
 
Leaf shape EDIT
 
  Leaf info EDIT
  Deciduous
  Leaves cauline, 5–9, rather lax, lanceolate, acute, 2.5–6 cm. long, reduced upwards into the bracts
 
 
 
  Seed info EDIT
 
 
 
Description EDIT
Orchid native to South Africa, 35 cm height with slender stem and small white flowers and brown/pink markings.
Growing EDIT
Disa caulescens is easy to propagate from seed. Sow the seed as fresh as possible in a low tray on a layer of boiled Sphagnum moss. Keep the moss moist, but not water-logged and place the tray in low light where the temperature is cool. Germination should take place after 3 to 6 weeks. Seedling development is faster than for Disa uniflora. Transplant the seedlings into compost as soon as the leaves are 7 mm long.
Distribution EDIT
South African endemic.
Eastern Cape, Western Cape / SW. Cape Prov.
Ceres, Tulbagh, Dutoits kloof, Bainskloof, Groot Winterhoek Mountains, Pikiniers Kloof.
Grows along streams at elevations of 600 to 1000 meters.
History EDIT
Uses EDIT
Ecology EDIT
Member Comments
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klair
17 December 2012 09:57
 
We saw many groupings of these flowering along the Wolwekloof river at Tweede Tol / Bainskloof in mid-December.
 
 
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References

 
  • Lindl. , (1838), Gen. Sp. Orchid. Pl.: 351  
 
 

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