Pontes et al. 2020 (Article) Pseudaraeococcus

Morphology and distribution support Pseudaraeococcus (Bromeliaceae, Bromelioideae) as a new genus from the Atlantic forest of Northeastern Brazil

Author(s):—R.A.S. Pontes, A. Calvente & L.M. Versieux

Corresponding email:—lversieux@yahoo.com.br

Publication:—PlantNow 1(2): 43–51. (2020) — DOI

Abstract:—After a revision of the genus Araeococcus Brong. two distinct morpho-biogeographical groups, also supported by anatomical characters, became evident and contradictory. Thus, here we elevate a subgenus to the generic level and propose the new Pseudareococcus to accommodate species bearing a unique combination of vegetative, reproductive and biogeographical features. Pseudaraeococcus differs from Araeococcus by the utriculate rosette with a developed tank (vs. fasciculate rosette and tank inconspicuous or absent), leaves nearly entire (vs. serrate), petals patent or reflexed (vs. petals erect), filaments cylindrical (vs. complanate), anther apex apiculate (vs. caudate), stigma conduplicate-spiral (vs. convolute-obconic, convolute blade I or simple-erect), seed coat with alveolar cells (vs. with cells with linear shapes), and by the Atlantic forest (vs. Amazonian/Central America) distribution. Six new combinations were made to accommodate species, and an identification key, a distributional map, and photographs of plants and structures are provided.

Keywords:—Atlantic forest, Bahia, bromeliad, epiphyte, taxonomy, new genus, Poales, Rainforest.

Published names (7):

Pseudaraeococcus
Pseudaraeococcus chlorocarpus
Pseudaraeococcus lageniformis
Pseudaraeococcus montanus
Pseudaraeococcus nigropurpureus
Pseudaraeococcus parviflorus
Pseudaraeococcus sessiliflorus