Martinella Baill., Hist. Pl. 10: 30. 1888.

Zuntini, Alexandre R. & Lohmann, Lucia G., 2014, Synopsis of Martinella Baill. (Bignonieae, Bignoniaceae), with the description of a new species from the Atlantic Forest of Brazil, PhytoKeys 37, pp. 15-24 : 16-17

Martinella Baill., Hist. Pl. 10: 30. 1888.

Type.

Martinella martinii (DC.) Baill. ex K. Schum. (= Martinella obovata (Kunth) Bureau & K. Schum)

Lianas.

Roots with tuberous portions. Branches terete, glabrous or puberulous, with trichomes simple or stipitate-glandular, with continuous interpetiolar ridges, without interpetiolar glands; prophylls minute, triangular, glabrous or puberulous. Leaves 3-foliolate or 2-with the terminal leaflet modified into a simple or trifid tendril; leafets membranous to coriaceous, margins entire (sinuate), with or without mite-domatia, glabrous to puberulous, with glands on adaxial surface. Inflorescences axillary, arranged in racemes, panicles, thyrses or compound dichasia. Flowers with calyx tubular (campanulate), bilobed, irregularly 2-4-lobed, or 5-lobed, with lobes rounded or aristate, membranous, with few scattered glands; corolla deep purple, red or yellow, tubular in the basal portion and campanulate in the upper part, straight to weakly curved, membranous, glabrous outside, glabrous inside except with few glandular trichomes at stamen insertion; stamens included, glabrous, pollen in monads; ovary terete, smooth, glabrous or lepidote, with a single series of ovules on each placenta, style glabrous, stigma rhombic, glabrous. Capsules drying dark brown, linear, flattened, smooth, glabrous or puberulous, with calyx caducous; seeds oblong, winged, with wings opaque.

Martinella comprises three species, distributed from Mexico to eastern Brazil. The main features that distinguish the species are summarized in Table 1 and outlined in the key below.

Key to species of Martinella

1	Calyx 5-lobed; corolla yellow; eastern Brazil	1. Martinella insignis
1'	Calyx 2-4-lobed; corolla deep wine to red; Antilles, Central America and Northern South America through Amazon basin	2
2	Inflorescence arranged in thyrse or panicle; leaflet with cuneate base	2. Martinella iquitoensis
2'	Inflorescence arranged in raceme; leaflet with cordate to truncate or rarely cuneate base	3. Martinella obovata