Five new species of Mansoa DC. (Bignoniaceae) from South America

Abstract

Mansoa (Bignoniaceae: Bignonieae) is a Neotropical genus of lianas distributed through Wet and Seasonally Dry Forests. The genus is characterized by striated bark, extrafloral nectaries on the abaxial surface of leaflets, trifid tendrils, and garlic odor. During a taxonomic revision of the genus, five new species were discovered in South America, increasing to 16 the number of recognized species in Mansoa. Four of these taxa, Mansoa ivanii, Mansoa longicalyx, Mansoa minensis and Mansoa paganuccii, are restricted to eastern portions of Brazil, while Mansoa gentryi is found in Peruvian rainforests. Mansoa ivanii, M. longicalyx, and M. minensis share pubescent branches and leaflets with Mansoa hirsuta, but differ by the corolla length and calyx morphology. Mansoa paganuccii shares ovate to elliptic leaflets and a lack of garlic odor with Mansoa difficilis and Mansoa angustidens, but differs by the serrate leaflets and mucronate calyx. Mansoa gentryi shares chartaceous and elliptic leaflets with Mansoa alliacea, but differs by the pinnate venation and ribbed capsules.

First record of Mansoa minensis M.M.Silva-Castro (Bignoniaceae, Bignonieae) in Espírito Santo, Brazil

“…Ovary 3.5 × 1.8 mm, subcylindric, pubescent; ovules 4-seriate, 18-20 per series; style 2.9-3.1 cm long, glabrous, stigma 4.0 × 1.5 mm, ovate. Fruit not seen, description based in Silva-Castro and Queiroz (2016): capsule smooth, 20.5-22 × 1-3 cm, apex acuminate, with irregular margin re-entrances, base acuminate; pubescent valves, peltate glandular trichomes, irregularly prominent midrib, calyx persistent. Seeds not seen.…”

“…Mansoa is a Neotropical genus comprising 16 species and occurs from Mexico to Argentina (Silva-Castro and Queiroz 2016). Morphologically, Mansoa is characterized by the lianescent habit, garlic or onion odor, leaflets with venation acrodromous imperfect, (supra) basal, trifid tendrils, and corolla usually pink to purple.…”

“…Morphologically, Mansoa is characterized by the lianescent habit, garlic or onion odor, leaflets with venation acrodromous imperfect, (supra) basal, trifid tendrils, and corolla usually pink to purple. The genus is widely distributed in Brazil in all vegetation types including rainforests, seasonal semideciduous forests, and savanna formations (Silva-Castro and Queiroz 2016), and all species occur in Brazil but M. gentryi M.M. Silva, which is endemic to Peru.…”

<b>The family Bignoniaceae in the Environmental Protection Area Serra Branca, Raso da Catarina, Jeremoabo, Bahia, Brazil

“…1 × 3.5 cm. This species is found in Caatinga vegetation of northeastern Brazil, where it occurs in the states of Rio Grande do Norte, Ceará, Piauí, Pernambuco, Bahia, and northern Minas Gerais (Silva-Castro & Queiroz, 2016). In the EPASB it is widely distributed throughout the area forming populations.…”

Reestablishment of Mansoa ventricosa (Bignonieae, Bignoniaceae) based on molecular and morphological data

“…Under the most recent treatment of the tribe (Lohmann & Taylor 2014), Mansoa includes 12 species. Five additional species were subsequently described (Silva-Castro & Queiroz 2016), expanding the genus to 17 species. Species of Mansoa are characterized by angular stems, prophylls of the axillary buds minute and triangular or bromeliad-like, garlic smell in the foliage, leaflets with basal actinodromous venation and nectaries at the base, trifid tendrils, pink to purple corollas that are pubescent outside, and linear fruits.…”