Background and Aims:

The high Andean forest in Colombia corresponds to a plant community located between 2400-3200(-3500) m a.s.l., characterized by the presence of arboreal species with restricted distributions that determine their physiognomy and composition. Nevertheless, these species have been affected by agricultural activity that has generated a loss of connectivity and richness. This research records the species richness, composition, and distributional data for the vascular flora in the high Andean forest of the Bijagual Massif, Bocayá, Colombia.

Methods:

Sampling was carried out in 27 transects. The specimens were organized under the APG IV classification system, curated and deposited in the UPTC herbarium (Universidad Pedagógica y Tecnológica de Colombia). The number of species, list of taxa, distributions for Colombia, and conservation categories according to the IUCN were noted.

Results:

We registered 327 species distributed in 151 genera and 69 families; 187 species (56%) were native to the Andean region, 51 (15%) were endemic to the Andes and 24 (7%) were endemic to the Eastern cordillera of the Andes, Colombia. Schefflera bejucosa is a new distributional record for Boyacá. Greigia stenolepis, Hieronyma rufa, Puya goudotiana and Tillandsia pallescens are Near Threatened (NT). Plutarchia guascensis, Quercus humboldtii and Symplocos venulosa are classified as Vulnerable (VU), and Diplostephium oblongifolium and Dunalia trianaei as Endangered (EN).

Conclusions:

Bijagual is a biological corridor with great potential for biodiversity compared to other high Andean areas in Colombia. Species richness is influenced by other localities near the Massif (Tota and Mampacha), in addition to a possible stochastic and heterogeneous distribution between sampling units. Miconia, Pentacalia, Epidendrum, Elaphoglossum, Tillandsia, and some other genera are species-rich. Clusia alata, Weinmannia balbisiana, Weinmannia rollottii, Ternstroemia cf. camelliifolia, and Brunellia comocladifolia define the arboreal and shrub physiognomy of Bijagual.

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