Edit History
Polystachya holmesiana P.J. Cribb [family ORCHIDACEAE]
Date Updated: 26 July 2007
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora Zambesiaca
Resource Type
Reference Sources
Entry From
FZ, Vol 11, Part 2, (1998) Author: I. la Croix & P.J. Cribb
Names
Polystachya holmesiana P.J. Cribb [family ORCHIDACEAE], in Kew Bull. 32: 155 (1977). —la Croix et al., Orch. Malawi: 227 (1991). Type: Zambia, Solwezi Distr., Kafue Kyishi and Nkabwima Forest Reserve, 20.ix.1958, Holmes O 47 (K, holotype; SRGH).
Polystachya sp. [family ORCHIDACEAE], (Williamson 1618), of Williamson, Orch. S. Centr. Africa: 124, pl. 102 (1977).
Information
Epiphytic, occasionally lithophytic, herb.Pseudobulbs clustered, 2.5–4.5 × 1–1.2 cm, oblong, somewhat bilaterally flattened, ribbed, usually with 2 nodes, yellowish, 2–4-leaved.Leaves distichous, 8–17 × 1–2.4 cm, ligulate, conduplicate, absent or just about to develop at flowering time.Inflorescence (floral axis) 12–30 cm tall, pubescent, laxly to c. 15-flowered.Pedicel and ovary 8–10 mm long, slightly arched so that the flowers face down; bracts up to 6 × 4 mm, broadly ovate, acuminate.Flowers orange, petals with a red central line, lip with a magenta tip and red veins on the side lobes.Sepals fleshy, pubescent on outer surface; dorsal sepal 8–9 × 4–6 mm, ovate, acute; lateral sepals 10–12 × 6–8 mm, obliquely triangular, keeled on the outside; mentum 6–10 mm long, rounded.Petals 6 × 2–3 mm, oblanceolate.Lip 8–10 × 7–8 mm, fleshy, hard to flatten, 3-lobed at about halfway with a yellow, clavate pubescent callus at the junction of the lobes; mid-lobe 4 × 3 mm, ovate, papillose; side lobes erect, rounded.Column and column foot pubescent, free part c. 1 mm long; anther cap violet.
Habitat
High rainfall Brachystegia woodland and riverine forest, usually on trees, sometimes on rocks in shade
Range
Known only from the Flora Zambesiaca area
Altitude range
1600–1920 m.
1920
1600
Distribution
Zambia N Kasama, fl. 10.x.1974, Gassner 2320 (K).Malawi N Rumphi Distr., approach to Nyika National Park, c. 1650 m, fl. 20.x.1980, la Croix 206 (K).Zambia W Solwezi Distr., Kafue Kyishi and Nkabwima Forest Reserve, fl. 20.ix.1958, Holmes O 47 (K; SRGH).Zambia C Serenje Distr., Mkushi and Serenje Hills, fl. 10.x.1961, Morze 71 (K).
Notes
This species is easily recognised by its distinctive flower colouring.
Date Updated: 26 July 2007
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora Zambesiaca
Resource Type
Reference Sources
Entry From
FZ, Vol 11, Part 2, (1998) Author: I. la Croix & P.J. Cribb
Names
Polystachya holmesiana P.J. Cribb [family ORCHIDACEAE], in Kew Bull. 32: 155 (1977). —la Croix et al., Orch. Malawi: 227 (1991). Type: Zambia, Solwezi Distr., Kafue Kyishi and Nkabwima Forest Reserve, 20.ix.1958, Holmes O 47 (K, holotype; SRGH).
Polystachya sp. [family ORCHIDACEAE], (Williamson 1618), of Williamson, Orch. S. Centr. Africa: 124, pl. 102 (1977).
Information
Epiphytic, occasionally lithophytic, herb.Pseudobulbs clustered, 2.5–4.5 × 1–1.2 cm, oblong, somewhat bilaterally flattened, ribbed, usually with 2 nodes, yellowish, 2–4-leaved.Leaves distichous, 8–17 × 1–2.4 cm, ligulate, conduplicate, absent or just about to develop at flowering time.Inflorescence (floral axis) 12–30 cm tall, pubescent, laxly to c. 15-flowered.Pedicel and ovary 8–10 mm long, slightly arched so that the flowers face down; bracts up to 6 × 4 mm, broadly ovate, acuminate.Flowers orange, petals with a red central line, lip with a magenta tip and red veins on the side lobes.Sepals fleshy, pubescent on outer surface; dorsal sepal 8–9 × 4–6 mm, ovate, acute; lateral sepals 10–12 × 6–8 mm, obliquely triangular, keeled on the outside; mentum 6–10 mm long, rounded.Petals 6 × 2–3 mm, oblanceolate.Lip 8–10 × 7–8 mm, fleshy, hard to flatten, 3-lobed at about halfway with a yellow, clavate pubescent callus at the junction of the lobes; mid-lobe 4 × 3 mm, ovate, papillose; side lobes erect, rounded.Column and column foot pubescent, free part c. 1 mm long; anther cap violet.
Habitat
High rainfall Brachystegia woodland and riverine forest, usually on trees, sometimes on rocks in shade
Range
Known only from the Flora Zambesiaca area
Altitude range
1600–1920 m.
1920
1600
Distribution
Zambia N Kasama, fl. 10.x.1974, Gassner 2320 (K).Malawi N Rumphi Distr., approach to Nyika National Park, c. 1650 m, fl. 20.x.1980, la Croix 206 (K).Zambia W Solwezi Distr., Kafue Kyishi and Nkabwima Forest Reserve, fl. 20.ix.1958, Holmes O 47 (K; SRGH).Zambia C Serenje Distr., Mkushi and Serenje Hills, fl. 10.x.1961, Morze 71 (K).
Notes
This species is easily recognised by its distinctive flower colouring.
Date Updated: 26 July 2007
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora Zambesiaca
Resource Type
Reference Sources
Entry From
FZ, Vol 11, Part 2, (1998) Author: I. la Croix & P.J. Cribb
Names
Polystachya holmesiana P.J. Cribb [family ORCHIDACEAE], in Kew Bull. 32: 155 (1977). —la Croix et al., Orch. Malawi: 227 (1991). Type: Zambia, Solwezi Distr., Kafue Kyishi and Nkabwima Forest Reserve, 20.ix.1958, Holmes O 47 (K, holotype; SRGH).
Polystachya sp. [family ORCHIDACEAE], (Williamson 1618), of Williamson, Orch. S. Centr. Africa: 124, pl. 102 (1977).
Information
Epiphytic, occasionally lithophytic, herb.Pseudobulbs clustered, 2.5–4.5 × 1–1.2 cm, oblong, somewhat bilaterally flattened, ribbed, usually with 2 nodes, yellowish, 2–4-leaved.Leaves distichous, 8–17 × 1–2.4 cm, ligulate, conduplicate, absent or just about to develop at flowering time.Inflorescence (floral axis) 12–30 cm tall, pubescent, laxly to c. 15-flowered.Pedicel and ovary 8–10 mm long, slightly arched so that the flowers face down; bracts up to 6 × 4 mm, broadly ovate, acuminate.Flowers orange, petals with a red central line, lip with a magenta tip and red veins on the side lobes.Sepals fleshy, pubescent on outer surface; dorsal sepal 8–9 × 4–6 mm, ovate, acute; lateral sepals 10–12 × 6–8 mm, obliquely triangular, keeled on the outside; mentum 6–10 mm long, rounded.Petals 6 × 2–3 mm, oblanceolate.Lip 8–10 × 7–8 mm, fleshy, hard to flatten, 3-lobed at about halfway with a yellow, clavate pubescent callus at the junction of the lobes; mid-lobe 4 × 3 mm, ovate, papillose; side lobes erect, rounded.Column and column foot pubescent, free part c. 1 mm long; anther cap violet.
Habitat
High rainfall Brachystegia woodland and riverine forest, usually on trees, sometimes on rocks in shade
Range
Known only from the Flora Zambesiaca area
Altitude range
1600–1920 m.
1920
1600
Distribution
Zambia N Kasama, fl. 10.x.1974, Gassner 2320 (K).Malawi N Rumphi Distr., approach to Nyika National Park, c. 1650 m, fl. 20.x.1980, la Croix 206 (K).Zambia W Solwezi Distr., Kafue Kyishi and Nkabwima Forest Reserve, fl. 20.ix.1958, Holmes O 47 (K; SRGH).Zambia C Serenje Distr., Mkushi and Serenje Hills, fl. 10.x.1961, Morze 71 (K).
Notes
This species is easily recognised by its distinctive flower colouring.
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