Burmeistera hippobromoides Lammers, Novon, 2002

González, Favio, 2023, Taxonomic revision of Burmeistera (Campanulaceae-Lobelioideae) in Colombia, Phytotaxa 615 (1), pp. 1-113 : 51

23. Burmeistera hippobromoides Lammers, Novon 12: 210. 2002.

Type:— COLOMBIA. Valle del Cauca: Yatacué, campamento CVC en Anchicayá , 03°40´N, 76°50´W, selva húmeda premontana madura, 700‒900 m, 25 Feb 1983 (fl, fr), A. Gentry, A. Juncosa & F. Gómez 40746 (holotype: MO! [ MO277258 ]; isotype: COL! [ COL000062123 ]). Figs. 13A–D , 14 .

Upright herbs or shrubs up to 2 m tall. Stem puberulous. Petiole 1.0– 2.5 cm long, puberulous; blade obovate to narrowly obovate, 12–20 (–25) × 3.8–6.0 (–11.0) cm, glabrous above, puberulous beneath, base attenuated, symmetric, apex acute, margin subentire to slightly crenate, with 1 or 2 intramarginal hydathodes per centimeter, secondary veins 10 to 14 per side, intramarginal vein present. Peduncle 3.5–9.5 cm long, glabrous to sparsely puberulous, ebracteolate. Hypanthium obconic, 8–9 × 5–6 mm, puberulous. Calyx lobes narrowly to very narrowly ovate, 9–16 × 2–4 mm, ascending, puberulous, basally spaced by sinuses 1 mm wide, margin entire, with 2 to 4 marginal teeth per side, apex rounded to acute. Corolla uniformly green, finely puberulous; tube 6.0– 6.7 cm long, ca. 5 mm basal and mid-level diameter, not inflated; lobes falcate, oblong-triangular, apex acuminate, dorsal lobes 20–25 × 4–5 mm, lateral lobes 15–18 × 3–4 mm, ventral lobe 10–12 × 4–5 mm. Synandrium 6.5–8.6 cm long, exserted up to 1.2 cm; filament tube 6.0– 7.7 cm long, glabrescent; anther tube 5–9 mm long, glabrous, ventral anthers barbate, with an apical tuft of trichomes up to 2 mm long. Berries globose, 1.0– 1.2 cm diameter, crowned by the persistent calyx lobes.

Phenology: — Burmeistera hippobromoides sets flowers and fruits in February, July and December.

Distribution, ecology and conservation status: — Burmeistera hippobromoides is endemic to the western slopes of the Colombian Western Cordillera, in the department of Valle del Cauca. The species occurs in rain forests at elevations between 400 and 900 m. Following the IUCN´s (2022) criteria [B1(EOO) and B2(AOO), conditions (a) and (b), and C2(a)(i)], it qualifies as Critically Endangered, due to its limited range of distribution, its low number of individuals, and the severe destruction of its habitat.

Notes: — Burmeistera hippobromoides is easily recognizable by its corolla tube not inflated, narrow and straight, 8.6–9.2 cm long, 2 to 3 times longer than in any other species of the genus.

Additional specimens examined:— Valle del Cauca. Río Anchicayá, cerca de la planta hidroeléctrica, Yatacué, campamento CVC en Anchicayá , 400‒500 m, 15 Dec 1981 (fl), A . Gentry 35676 ( COL); Yatacué, Alto Anchicayá , near CVC hydroelectric plant, headquarters valle of Río Dagua (tributary of Anchicayá), ca 3°38´N, 76°45´W, 710‒ 880 m, 17 Jul 1984 (fr), A . Gentry et al. 48262 ( CUVC) .

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.