Taxonomic revision of Burmeistera (Campanulaceae-Lobelioideae) in Colombia Author González, Favio 0000-0001-5716-9278 Universidad Nacional de Colombia, Facultad de Ciencias, Instituto de Ciencias Naturales, Sede Bogotá fagonzalezg @ unal. edu. co; https: // orcid. org / 0000 - 0001 - 5716 - 9278 fagonzalezg@unal.edu.co text Phytotaxa 2023 2023-09-19 615 1 1 113 http://dx.doi.org/10.11646/phytotaxa.615.1.1 journal article 10.11646/phytotaxa.615.1.1 1179-3163 8389205 40. Burmeistera pinnatisecta Luteyn, Syst. Bot. 11: 474. 1986 . Type :— COLOMBIA . Cauca : Parque Natural Nacional Munchique , km 42‒47 NE de la Uribe , 2350‒2650 m , 23 Apr 1979 (fl, fr), J . L . Luteyn, M . Lebrón-Luteyn & G . Morales 7427 ( holotype : COL ! [ COL000004738 ]; isotypes: COL ! [ COL000004739 ], NY ! [ NY00468002 ]). Figs. 18I, J , 20 . Scandent subshrubs up to 3 m tall. Stem glabrous. Petiole 3‒5 mm long glabrous; blade oblong to elliptic, (5–) 7–10 × 1–3 cm , glabrous above, puberulous along the midvein beneath, pinnatisect, with 11‒15 narrowly to very narrowly oblong lobes per side, each lobe 0.7–1.7 × 0.2 cm , base asymmetric, apex of each segment obtuse to rounded, margin entire. Peduncle 3.5–5.0 cm long, glabrous, ebracteolate. Hypanthium globose, 12–15 × 6.5–9.0 mm, glabrous. Calyx lobes oblanceolate to narrowly elliptic, 9–12 × 2–3 mm , as long as the corolla tube, patent to ascending, glabrous, basally contiguous, margin crenate with 3 to 6 teeth per side, apex acute to obtuse. Corolla green sometimes suffused with purple, glabrous; tube 9–12 mm long, 2.2–2.5 mm in diameter at its mid-level, inflated proximally and distally; lobes ovate or narrowly ovate, falcate, apex acute, dorsal lobes 16–24 × 5.8–6.0 mm, lateral lobes 10–16 × 2.8–3.0 mm, ventral lobe 5.0–8.5 × 2.8–3.0 mm. Synandrium 4.0– 4.7 cm long, exserted up to 3.5 cm ; filament tube 3.5–4.0 cm long, glabrous; anther tube 5–7 mm long, glabrous, ventral anthers ebarbate. Berries globose to oblate, 1.5‒3.0 × 1.7–3.0 cm, inflated, glabrous, green when juvenile, later white suffused with purple. Phenology: — Burmeistera pinnatisecta has been collected with flowers and fruits in March, April, and from June to August. Distribution, ecology and conservation status: — Burmeistera pinnatisecta is restricted to cloud forests at the Munchique Natural National Park, in the department of Cauca , at elevations between 2000 and 2650 m . Following the IUCN´s (2022) criteria [B1(EOO) and B2(AOO), conditions (a) and (b), and C2(a)(i)], this species qualifies as Critically Endangered. Notes: — Burmeistera pinnatisecta is similar to B. pteridioides , endemic from the department of Boyacá , in the Eastern Cordillera of Colombia . It differs by the peduncle 3.5–5.0 cm long; the flowers 3.2–4.5 cm long, including the hypanthium of 12–15 mm long; the calyx lobes 9–12 mm long, as long as the corolla tube, oblanceolate to narrowly elliptic, margin with 3 to 6 teeth per side; the corolla with dorsal lobes 16–24 mm long, lateral lobes 10–16 mm long, and ventral lobe 5.0– 8.5 mm long; the filament tube 3.5–4.0 cm long, glabrous; the ventral anthers ebarbate; and the berries globose to oblate, 1.7–3.0 cm in diameter ( versus the peduncle 6–7 cm long; the flowers often shorter (to 3.5 cm long, including the hypanthium of 4–5 mm long); the calyx lobes 3–5 mm long, shorter than the corolla tube, oblong, margin with 1 or 2 teeth per side; the corolla with dorsal lobes 10–12 mm long, lateral lobes 7–9 mm long, and ventral lobe 4–5 mm long; the filament tube 1.8–2.2 cm long, puberulous; the ventral anthers barbate; and the berries oblate, 1.5–1.7 cm in diameter in B. pteridioides ). Additional specimens examined:— Cauca . El Tambo , Parque Nacional Munchique , carretera entre las cabañas de La Romelia y Charguayaco , 2450‒2650, 21 Jun 2001 (fl), R . Bernal 2856 ( COL ); El Tambo , vereda La Romelia , PNN Munchique , camino de la casa de visitantes a La Gallera , 2500 m , 22–24 Aug 2011 (fr), J . Garzón et al. 594 ( COL ), 595 ( COL ), 596 ( COL ); El Tambo , PNN Munchique , vereda La Romelia , Quebrada Charco Azul , 2570 m , 20 Jul 1993 (fl, fr), F . González 2859 ( COL , PSO ); PNN Munchique , km 42 y/o km 58 of Uribe-La Gallera road, 2000‒2500 m , 27 Mar 1986 (fl), B . Stein 3763 ( COL ) .