Burmeistera loejtnantii Jeppesen

González, Favio, 2023, Taxonomic revision of Burmeistera (Campanulaceae-Lobelioideae) in Colombia, Phytotaxa 615 (1), pp. 1-113 : 58-59

27. Burmeistera loejtnantii Jeppesen , Flora of Ecuador 14: 23. 1981.

Type:— ECUADOR. Carchi: Valle de Maldonado , km 53 on Tulcan-Maldonado road, 3150‒3250 m, 19 May 1973 (fl, fr), L. Holm-Nielsen, S. Jeppesen, B. LØjtnant & B. Øllgaard 5838 (holotype: AAU [not seen]; isotypes: K! [ K000250829 ], NY! [ NY00467997 ], S! [ S05-1904 ]). Figs. 13E , 14 .

Upright to reclinate herbs up up to 80 cm tall. Stem glabrescent to puberulous but not strigose. Petiole 3–8 mm long, glabrescent to slightly strigose; blade ovate to elliptic, 2–5(–6) × 1.5–3.5 cm, not bullate, glabrous above, puberulous beneath, base rounded to subcordate, apex acute to acuminate, margin subentire to serrulate, hydathodes intramarginal, secondary veins 5 to 8 per side, conspicuous, higher order veins markedly reticulate especially on the abaxial surface, intramarginal vein lacking. Peduncle 1.5–1.8 cm long, glabrous, ebracteolate. Hypanthium obconic, 5–8 × 2–5 mm, glabrous. Calyx lobes narrowly ovate to ovate, 5–9(– 12 in fruit) × 1–4 mm, ascending, glabrous, basally spaced by sinuses 1.0– 1.5 mm wide, margin entire, apex acute. Corolla yellowish-green, glabrous; tube 1.0– 1.6 cm long, 2–3 mm diameter at its mid- and distal portions, inflated proximally; lobes narrowly ovate, strongly falcate, apex obtuse, dorsal lobes 8–10 × 3–4 mm, lateral lobes 7–8 × 3–4 mm, ventral lobe 6–7 × 2.5–3.5 mm. Synandrium 2.1–2.6 cm long, exserted up to 1.4 cm; filament tube 1.7–2.0 cm long, smooth, glabrous; anther tube 4–6 mm long, smooth, glabrous, ventral anthers barbate during preanthesis and early anthesis, later ebarbate. Berries globose to oblate, 1.3–1.5 × 1.4–1.6 cm, inflated, glabrous, white or purple.

Phenology: — Burmeistera loejtnantii sets flowers and fruits from January to November.

Distribution, ecology and conservation status: — Burmeistera loejtnantii occurs in southern Colombia (departments of Nariño and Putumayo) and Ecuador. In Colombia, the species occurs in cloud, sub-Andean forests to páramos at elevations between 1860 and 3300 m. Following the IUCN (2022) Guidelines, this species qualifies for the Near Threatened (NT) category.

Note: —This species is closely related to B. killipii , endemic from the department of Cauca, Colombia (see distinguishing traits under the latter).

Additional specimens examined:— Nariño. Lado sur de La Cicha, quebrada Santa Lucía, 2850 m, 8 Jan 1941 (fl, fr), J. Cuatrecasas 11849 ( COL) ; Puerres , cerca de la estación de rebombeo de Ecopetrol, 2900‒3200 m, 1–3 Mar 2011 (fl, fr), J. Garzón et al. 507 ( COL) ; Ipiales , alrededores de La Victoria, 2980 m, 25 Apr 2009 (fl, fr), F. González 4343 ( COL) ; Ipiales , carretera entre La Victoria y el Río San Francisco, 3100 m, 5 Sep 1972 (fr), E. Hernández et al. 280 ( PSO). Pasto , corr. El Encano, sur de La Cocha, vereda La Joya, quebrada La Hondita, 0°58´N, 77°08¨ W, 2750 m, 26 Jul 1996 (fl, fr), B. Ramírez 9925 ( PSO) ; Pasto , corr. El Encano, sur de La Cocha, vereda La Joya, quebrada Saraconcho, 0°58´N, 77°07¨ W, 2740 m, 7 Sep 1996 (fl, fr), B. Ramírez 10077 ( PSO) ; Puerres, El Rosal, via a Monopamba, 0°52´N, 77°22´W, 3300 m, 19 Jan 1999 (fr), B. Ramírez 11960 ( PSO) ; Reserva Natural La Planada, Ricaurte, vereda San Isidro, 01°09´25.7´´N, 77°58´46.8´´W, 1861 m, 18 Aug 2017 (fl), D. Sanín et al. 7078 ( COL). Putumayo. San Francisco , km 83 margen derecha de la carretera a Mocoa, 2890 m, 18 Nov 1971 (fr), G. López et al. 464 ( PSO, NY).

Figures

FIGURE 13. A–D. Burmeistera hippobromoides (Gentry et al. 40746, type), leaf (A), leaf margin (B), flower at preanthesis (B), and anthesis (D). E. B. loejtnantii (Ramírez 10077), leaves and flowers. F–G. B. longifolia (Pennell 4399, type), leaf (F) and flower (G). Scale bars: 5 mm in A, D–G; 1 mm in B; 2 mm in C.

FIGURE 14. Distribution of Burmeistera hippobromoides, B. ibaguensis, B. kalbreyeri, B. killipii, B. loejtnantii, B. longifolia, B. luteynii and B. marginata.