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Botanical name |
Disa graminiflora |
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Other names |
Blue disa, previously Herschelianthe graminiflora |
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Family |
Orchidaceae |
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Dimensions |
A small perennial, reappearing annually after a dormant period from a tuberous rootstock |
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Description of stem |
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Description of leaves |
Narrow leaves from the base, semi-erect |
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Description of flowers |
Racemes of blue flowers appearing in summer; light blue sepals, the dorsal one darker blue towards the apex, pointed rather than hooded; the lip white at the centre, bright to dark blue at the edges, recurving, comparatively big; the pollinia in front of the dorsal sepal as two greenish yellow protuberances drooping sideways above the dark blue petals; the stigma white, central |
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Desciption of seed/fruit |
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Description of roots |
Tuberoids, growing shoots that form new root tubers |
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Variation |
Some flower colour variation |
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Propagation and cultivation |
Can be grown from seed, germination slow; humidity and temperature controlled in greenhouse conditions; Disa Society at +27 (0)21 913 6902 or |
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Tolerances |
Can withstand summer heat, provided that the roots remain moist |
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Uses |
A delightful sighting in nature; plants may not be removed; a rare garden subject, grown from seed in special, carefully controlled circumstances |
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Ecological rarity |
Very small areas that provide the required conditions of the natural habitat |
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Pests and diseases |
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Other |
The Orchid Conservation Alliance creates orchid habitat reserves in the Equadorian Andes, See www.orchidconservationalliance.org ; on www.orchidspecies.com over 6000 orchid species in 611 genera are listed; a natural hybrid occurs between D. graminiflora and D. ferruginea, called D. vogelpoelii; blue disas include D. hians, lonicornu and maculata; find blue disa photos on www.disas.com/louis_vogelpoel_02.htm for blue disa pictures |
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Location |
Grows in cool, wet fynbos areas close to rivers, often in wet moss near waterfalls; may appear in endemic areas after veld fires |
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Distribution (SA provinces) |
Western Cape |
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Country |
South Africa |
