| Family | Orchidaceae | 
| Subfamily | Orchidoideae | 
| Tribe | Diurideae | 
| Subtribe | Prasophyllinae | 
| Scientific name | Microtis unifolia (G. Forster) Reichenbach f. | 
| Synonyms | Epipactis porrifolia Swartz; Microtis aemula Schlechter; Microtis banksii A. Cunningham ex Hooker; Microtis formosana Schlechter ex Masamune; Microtis frutetorum Schlechtendal; Microtis longifolia Colenso; Microtis papillosa Colenso; Microtis porrifolia (Swartz) R. Brown ex Sprengel; Microtis pulchella Lindley; Microtis viridis F. Müller; Ophrys unifolia G. Forster | 
| Common name | (Japanese common name) nira-ba-ran (ニラバラン, 韮葉蘭 [meaning: onion leaf orchid]) | 
| (English common name) none | |
| Distribution | (Japan) Honshu (west of Chiba Prefecture), Shikoku, Kyushu, Okinawa | 
| (Other nations) China, Taiwan, Phillipines, Malaysia, Indonesia, Australia, New Zealand | |
| Habitat | Field near seaside | 
| Chromosomal number | 2n=88 | 
| Description | Leaves single like onion leaf, 15-25cm long, 2-2.5mm wide. Scapes 10-40cm tall. Flowers green ca. 4-5mm long, flowerting in April to May. Terrestrial. Perennial plants. | 
| Reference | Microtis unifolia (G. Forst.) Rchb. f. | 
| Microtis unifolia (Forst.) Rchb. f. | |
| Microtis unifolia (G.Forst.) Rchb.f. 1871 | |
| Microtis unifolia (G.Forst.) Rchb.f. | |
| Microtis unifolia (G.Forst.) Rchb.f. | |
| Microtis unifolia | |
| Chromosomes of NZ Native Orchids - Part 1 of 2 | |
| Note | Flora Base has described that Microtis unifolia (G. Forster) Reichenbach f. has been misapplied against the current name Microtis media R. Brown. | 
| late May 2009 at my home  | 
      late May 2009 at my home  | 
    
| late April 2009 at my home  | 
      late April 2009 at my home  | 
      late April 2009 at my home  | 
    
| late April 2009 at my home  | 
    
| early April 2009 at my home  | 
      early April 2009 at my home  | 
    
| mid April 2009 at my home  | 
      mid April 2009 at my home  |