Ophrys fusca, Link in Schrader, 1800

D. M. Moore (ed.), 1980, CCIII Orchidaceae, Flora Europaea, Vol 5: Alismataceae to Orchidaceae, Camebridge: Cambridge University Press, pp. 325-350 : 346

4. O. fusca Link in Schrader ,

Jour, für die Bot. 1799(2): 324 (1800).

Plant 10-40 cm. Basal leaves oblong-lanceolate, obtuse, mucronate, the cauline 1 -2, lanceolate, acute. Spike 1 - to 9- flowered, lax. Perianth-segments subglabrous or papillose; outer 9-11 mm, oblong or ovate, green, rarely pinkish; inner perianth-segments 6-8 mm, at least ^ as long as outer, linear to linear-oblong, green. Labellum 13-23 x9-21 mm, with margins more or less deflexed, obovate, purplish or yellowish-brown, velutinous, 3-lobed with broadly rounded lobes, not globose- inflated; lateral lobes oblong-ovate, obtuse; middle lobe reni- form, obcordate or ovate, usually emarginate; speculum 2- partite, blue, bluish-violet or brown, often with white or yellow margin, sometimes with white or pale yellow lines. Connective obtuse. 2n —c. 73.

Mediterranean region, C. & S. Portugal; S. W. Romania. A 1 B 1 Co Cr Ga Gr Hs It Ju Lu Rm Sa Si Tu.

1 Lateral lobes of labellum almost as long as the middle; inner perianth-segments as long as the outer (a) subsp. durieui

1 Lateral lobes of labellum very short; inner perianth-segments F-f as long as the outer

2 Labellum geniculately deflexed at base; speculum entire, with white margin and with w-shaped mark' (d) subsp. omegaifera

2 Labellum horizontal or inclined downwards, incised at base; speculum usually divided into 2 parts without w-shaped mark

3 Labellum not more than 15x12 mm, with narrow yellow margin; speculum greyish-blue or bluish-violet (b) subsp. fusca

3 Labellum up to 25 x 21 mm, without yellow margin; specu­ lum shining blue (c) subsp. iricolor