John and Gerry's    Orchids of Britain and Europe
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Ophrys promontorii 

  This Italian endemic is a member of the small O. lunulata  group which was first described from  Foggia
  by Danesch and Danesch in 1971.   Its name refers to the  promontory  of  Mount  Gargano  where this
  species is at its  most frequent,  although it should be stressed that nowhere within its range is at all a
  common orchid.

  O. promontorii  has a  central  peninsula  Italy distribution  and may be encountered from the Abruzzi
  region in the north,  down through the eastern provinces to Brindisi in the south.  As already mentioned,
  its  headquarters  is  firmly  the  Gargano  peninsula  where it prefers short grassland and meadows on
  alkaline substrates up to approx 1300m.

  This is a relatively stable Ophrys  although an  enthusiastic  hybridizer  with  several  recognized  and
  named forms IE :- O. promontorii x O. bertoloniformis  =  O. azurea ;  O. promontorii x O. incubacea =
  O. angelensis .  There is considerable expert debate as to the origins of this species and whilst Delforge
  doubts any hybrid heritage,  many others are completely convinced of  this. The precise identity of the       contributing species is however a matter of some disagreement with O. incubacea, O. lunulata and even
  O. garganica being suspected. 

 
Notwithstanding  hybrids, this species is not easily confused with other species and generally presents
  many stable features.  It is invariably green sepalled and hirsuit with basal swellings that are hairless
  on the inner face.  The speculum can however vary from a full glossy blue shield to an H formation and
  most commonly,  two or more isolated dots or streaks. 

The following oddities are all hybrids. The first with O. garganica the second and third with O. bertoloniformis ( O. azurea ).