Satyrium compactum Summerh., Kew Bull. 20: 179 (1966).
Terrestrial herb 20–60 cm tall; tubers to 2 cm long, ellipsoid or globose, almost glabrous. Leaves 6–10; the lowermost 1–2 leaves sheath-like; stem leaves 6–14 × 0.7–1.3 cm, linear or lanceolate-linear, acute; the 3 uppermost leaves much smaller. Inflorescence 1–6 × 1–2 cm, shortly cylindrical, densely 4- to many-flowered. Flowers arched, spreading, white tinged green; rhachis shortly pubescent. Ovary c. 5 mm long, pubescent; bracts ± spreading, 5–12 mm long, lanceolate, acute. Sepals and petals decurved, adnate to each other and lip in lower quarter or third. Median sepal 3–5 × 1–1.5 mm, oblong-ligulate, obtuse; lateral sepals longer and c. 2 mm wide, oblique. Petals similar to median sepal but shorter and narrower. Lip almost horizontal, 4–5.5 mm long, ovate, apex obtuse or subacute. Spurs 1–2 mm long, c. 1 mm wide, parallel to ovary. Column 3–4 mm high, slightly curved; stigma 1–2 mm high, orbicular or transversely elliptical; rostellum 1 mm long, the apex shortly 3-lobed, the mid-lobe bidenticulate.
This species resembles Satyrium trinerve but differs from it in the shorter, more compact inflorescence, smaller bracts, and smaller flowers with shorter spurs.
Wet grassland and dambo, often on peaty soil 1350–1800 m.
S. Trop. Africa