Liparis brachystalix Rchb.f., Linnaea, 1876

Damian, Alexander, Salazar, Gerardo A. & Rimarachin, Leyda, 2020, A new species and a new record of Liparis sect. Decumbentes (Malaxidinae, Orchidaceae) from Peru, PhytoKeys 146, pp. 37-46 : 37

Liparis brachystalix Rchb.f., Linnaea

Liparis brachystalix Rchb.f., Linnaea 41: 43 (1876). Type: Ecuador, Pichincha, Jameson, W. s.n. (holotype US [drawing AMES!], isotypes AMES, GH, P (as Jameson 448).

Leptorkis brachystalix (Rchb.f.) Kuntze, Revis. Gen. Pl. 2: 671 (1891).

Liparis pothoides F.Lehm. &Kraenzl., Bot. Jahrb. Syst. 26: 478 (1899). Type: Colombia, Paramo de Guanacas, Central Andes of Popayan, F. C. Lehmann 8094 (holotype K-photo, isotype AMES-photo).

Liparis commelinoides Schltr., Repert. Spec. Nov. Regni Veg. 14: 119 (1915). Type: Ecuador, Pichincha, L. Sodiro 137 (holotype B, destroyed; Lectotype selected here: drawing of the holotype published by Mansfeld, 1930: no. 71. Fig. 3D ).

Liparis fendleri Schltr. Repert. Spec. Nov. Regni Veg. Beih. 6: 32 (1919). Type: Venezuela, Prope Colonia Tovar, A. Fendler 1422 (holotype AMES-photo!, isotypes GOET-photo!, AMES-photo!).

Remarks.

Liparis brachystalix is quite constant morphologically, having ovate, petiolate leaves with undulate margins, and labellum with a cordate base, apiculate apex, and a simple callus formed by thickened veins. Labellum shape varies slightly, being somewhat panduriform in the type of L. pothoides (Fig. 3B ) to obovate-oblong in those of L. fendleri , L. commelinoides and L. brachystalix (Fig. 3A, C, D ).

In Peru, Liparis brachystalix was collected in the 1960s in the cloud forests of Amazonas, but it was overlooked (Brako and Zarucchi 2993; Ulloa Ulloa et al. 2004, 2017). In a recent update of the checklist of Peruvian orchids of Zelenko and Bermudez (2009) published by Goicochea et. al. (2019), L. brachystalix was recorded for the first time in Peru. However, the record by Goicochea et al. (2019) did not indicate any vouchers supporting it. Therefore, herein we provide the first vouchered citation of L. brachystalix for this country. Liparis brachystalix is widespread along the eastern slope of the Peruvian Andes, inhabiting the cloud forest of Amazonas, Pasco, and Huancavelica at an altitude of 2000-2900 m.

Specimens examined.

Amazonas, Prov. Bongara, Dtto. Yambrasbamba, 1860-2000 m, 2-26 March 1967, S. S. Tillet 673-304 (USM!); Pasco, Prov. Oxapampa, Dtto. Huancabamba, 10.25.45S 75.26.35W, 2870 m, 28 February 2009, R. Vasquez, L. Valenzuela, J. Mateo & R. Rivera 35414 (USM!, HOXA!, HUT!, MOL!); Prov. Oxapampa, Dtto. Huancabamba, 10°26'35"S, 075°26'16"W, 2200.2500 m, 12 March 2006, R. Vasquez et al. 31065 (HOXA!). Huancavelica, Prov. Tayacaja, Dtto. Tintay Puncu, Lihuapampa, Bosque nublado Usnopata-sector Vacayupana, 2900 m, 18 February 2015, L. Egoavil s.n. (photo!).

Figures

Figure 3. A holotype of Liparis brachystalix (W. Jameson 448, P) B holotype of Liparis pothoides (F. C. Hehmann 8094, AMES) C holotype of Liparis fendleri (Fendler 1422, PH) D Schlechter's sketch of a flower from the holotype of Liparis commelinoides, published by Mansfeld (1930). Scale bar: 1 cm.