New names in Monotagma (Marantaceae) Author Hagberg, Mats Author Eriksson, Roger text Phytotaxa 2011 2011-03-01 20 1 1 25 http://biotaxa.org/Phytotaxa/article/view/phytotaxa.20.1.1 journal article 10.11646/phytotaxa.20.1.1 1179-3163 4776634 Monotagma sect. Tubularia Hagberg & R.Erikss. , sect. nov. Differt a speciebus caeteris Monotagmatis mesocarpio unistratoso, cellulis parietibus tenuibus, et arillo tubulari. Type : Monotagma smaragdinum (Linden & André) K.Schum. Pericarp with 1-layered mesocarp. Seed narrowly cylindrical to narrowly pyramidal; aril tubular without lobes or with two string-shaped straight lobes. Discussion :— Monotagma sect. Tubularia comprises 17 species. It is characterized by having fruits with a one-layered mesocarp with unsclerified cells, and tubular arils with laterally united lobes. These features are apomorphic for this section ( Hagberg 1990b ).