AFRICAN

ORCHIDS

Satyrium amblyosaccos Schltr., Bot. Jahrb. Syst. 53: 535 (1915).
Heterotypic Synonyms:
Satyrium papillosum Schltr. in R.E.Fries, Wiss. Erg. Schwed. Rhod.-Kongo Exped. 1: 212 (1916), nom. illeg.
Description:
A terrestrial herb 2-6 dm. high, only slightly hairy apart from the roots; tubers ovoid to fusiform-cylindrical, 2-3.5 cm. long, 6-18 mm. in diameter, ± tomentose; roots slender, flexuous, pubescent. Sterile stem short, 3—1-leaved; lower 2-3 leaves sheath-like, short, the upper leaf lanceolate or oblong-lanceolate, acute, up to 13-18 cm. long and 3-4 cm. broad. Flowering stem erect, slender to rather stout, leafy along its length; leaves 5-9, the lowermost 1 or 2 sheath-like, acute, the middle ones elliptical-lanceolate or elliptical-oblanceolate, acute, the largest up to 6-17 cm. long and 2-7 cm. broad, decreasing in size up the stem. Inflorescence cylindrical, 5-21 cm. long, 2-3.5 cm. in diameter, loosely to rather densely many-flowered; bracts reflexed, lanceolate, acute, 1-3 cm. long. Flowers half-spreading, sessile, whitish or yellowish-green, rarely tinged rose; ovary straight, 5-9 mm. long. Sepals and petals sharply deflexed, united with one another in their basal half and to the lip in their basal third; intermediate sepal oblong-oblanceolate, rounded, 6-10 mm. long, 1.5-2 mm. broad; laterals obliquely oblong-elliptical, a little shorter but 2-3.5 mm. broad. Petals narrowly oblanceolate or ligulate, a little shorter than the sepals, less than I mm. broad. Lip erect, very convex, with a wide mouth and erect narrowed apex, 6-9 mm. long, somewhat hairy inside; spurs very short and rounded, 1.5-3 mm. long, ± 2 mm. in diameter. Column slender, slightly curved, the stalk longer than the fertile part, long-hairy in the lower part; stigma semi-orbicular, concave, 1 mm. high and 1.5 mm. broad, rostellum porrect, truncate and very shortly 3-toothed in front.
Habitat:
Upland grasslands, sometimes among rocks, wet or dry grasslands, marshes, Brachystegia woodlands.
Phenology:
Flowering in December-March.
Notes:
Satyrium amblyosaccus is unique among Satyrium species collected or potentially occurring in the study area by having lower part of the column hairy.
Cultivation:
As given for the genus, warm to cold growing terrestrial.
Distribution:
The Democratic Republic of Congo (Zaire), Burundi, Tanzania, Zambia, Malawi. Alt. 1200-2300 m.
References:
The Orchids of South Central Africa Williamson 1977; Flora Zambesiaca Vol 11 Orchidaceae Part 1 Pope 1995; Orchidaceae of West-central Africa, vol. 1, Gdansk University Press Gdansk 2010; Flora of Tropical East Africa Summerhayes Orchidaceae Part 1 1968; Molecular Markers Reject Monophyly of the Subgenera of Satyrium (Orchidaceae) Timotheüs van der Niet, Systematic Botany, Vol. 30, No. 2 (Apr. - Jun., 2005), pp. 263-274; African Orchids: XXX V. S. Summerhayes, Kew Bulletin, Vol. 20, No. 2 (1966), pp. 165-199
Images:
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Habitat/In situ  Habitat/In situ  Habitat/In situ 
Satyrium amblyosaccos  01  Satyrium amblyosaccos  02  Satyrium amblyosaccos  03 
Photograph© Nicholas
Case
Wightman Image
used with kind

permission. 
Photograph© Nicholas
Case
Wightman Image
used with kind

permission. 
Photograph© Nicholas Case
Wightman Image used with kind
permission.