Hemiperis falcata Frapp. Benthamia longecalceata H.Perrier , Notulae Systematicae 14: 139 ( Perrier 1951 ) Revision of the genus Benthamia A. Rich. (Orchidaceae, Orchidioideae, Habenariinae) Hervouet, Jean-Michel Descourvières, Pascal Hermans, Johan Longou, Ludivine Adansonia 2025 3 2025-07-21 47 11 171 249 6C7ZC (Frapp.) Schltr. Schltr. Frapp. [280,628,1620,1648] Liliopsida Orchidaceae Cynorkis Plantae Asparagales 77 246 Tracheophyta species falcata   Beihefte zum Botanischen Centralblatt33 (2) ( Schlechter 1915: 400). —  Hemiperis falcataFrapp., in Cordemoy,  Flore de la Réunion: 241 ( Cordemoy 1895).    Benthamia longecalceataH.Perrier, Notulae Systematicae14: 139 ( Perrier 1951). — Type:  Madagascar• Sava, Sommet ouest du Marojejy; alt.  2000 m; III-IV.1949;  H. Humbertet al. 23868; lectotype: P[ P00094528]!, designated by Hermans et al.(2007: 72); Cribb & Hermans (2009: 42), syn. nov.    TYPE  MATERIAL. —   France,  La Réunion• sine loc.;  Cordemoys.n.; lectotype: MARS[ MARS087655]!, designated by Hermans & Cribb (2021: 101).  ADDITIONAL SPECIMENS EXAMINED. —   Madagascar• Sava, nordest du Maimborondro au nord du Maroambihy-Lokoho; alt.  400- 500 m;  III.1949;  H. Humbert23388; P[ P00094527]! •  Sava, mont Beondroka, au Nord de Maroambihy;  17-22.III.1949;  H. Humbert23602; P[ P00094525, P00094526]!, G!.   NOTES This species was previously known only from La Réunion, but  Benthamia longecalceatafrom Madagascarappears to be a new synonym. Here is a translation of the original Latin description of  Benthamia longecalceataby Perrier: “Geophyte, slender, 25-40 cmhigh, one-leaved. Leaf oval (1.3 × 1-1.5 cm), shortly ( 5-10 mm) petiolate, acute-acuminate. Inflorescence slender, peduncle a few sheaths. Rachis dense, 2-4 cmlong, 7-10 mmwide, 10- to 20-flowered. Floral bracts acute, narrowly lanceolate, shorter than the pedicellate ovary. Sepals one-veined; dorsal sepal obtusely ovate (2 × 1.5 mm), lateral sepals subfalciform (3 × 1.8 mm). Petals obtusely subfalciform, small (2 × 1 mm), one-veined. Lip elongated ( 2.5 mm), slipper-shaped, spur pendent, cylindric, the same length as the lip ( 2.5 mm).” It is highly likely that Jean Bosser also discovered this synonymy but did not publish it. As a matter of fact, he left several notes on the specimens stating that this species was very close to  Hemiperis falcataCordem.of La Réunionand that further dissections should be done. He even filed the two specimenswhich were not the holotypein the  Cynorkis falcatafolder in P, where we found them. 5898709047 MARS Cordemoy France La Reunion 77 246 MARS087655 1 La Reunion lectotype 5898709020 1949-03 P H. Humbert Madagascar 450 nordest du Maimborondro au nord du Maroambihy-Lokoho Sava 77 246 P00094527 1 5898708320 1949-03-17 1949-03-22 1949-03-17 P, G H. Humbert mont Beondroka, au Nord de Maroambihy Sava 77 246 P00094525, P00094526 1