Bonamia krapovickasii A.Moreira & Sim.

Moreira, André Luiz Da Costa, Simão-Bianchini, Rosangela & Cavalcanti, Taciana Barbosa, 2018, Two new species of Bonamia (Convolvulaceae) endemic to the Brazilian Cerrado, Phytotaxa 361 (1), pp. 106-114 : 112

publication ID	https://doi.org/ 10.11646/phytotaxa.361.1.9
DOI	https://doi.org/10.5281/zenodo.13704503
persistent identifier	https://treatment.plazi.org/id/135987E4-EA40-FFAD-358C-FDB603D752C5
treatment provided by	Felipe
scientific name	Bonamia krapovickasii A.Moreira & Sim.
status

Treatment

Bonamia krapovickasii A.Moreira & Sim. View in CoL -Bianch., sp. nov.

Type:— Goiás: Chapadão do Céu/Mineiros, Parque Nacional das Emas, 2 km da entrada do portão Jacuba. 17º53’17’’ S, 53º00’22.6’’ W, 864 alt., 13 December 2012, Moreira et al. 92 (holotype CEN!, isotypes SP!, UB!). Figs. 3 View FIGURE 3 , 4 View FIGURE 4 .

Bonamia krapovickasii is closely related to Bonamia campestris A.Moreira & Sim. -Bianch. (2017: 147) by its prostrate habit and elliptic lamina with a cuneate to rounded base and rounded apex, but differs in the densely tomentose leaves, the simple trichomes and the axillary cymes with 1–5 flowers, whereas in Bonamia campestris the leaves are glabrous and the inflorescence terminal, glomerule-like with ca. 20 flowers.

Prostrate herb, stems ca. 1 m long, tomentose, yellowish to ferruginous, trichomes simple; internodes ca. 2 cm long. Leaves petiolate, petiole ca. 0.3 cm long, lamina 0–5 × 0.5–2.5(–4) cm, elliptic, base cuneate to rounded, apex rounded, mucronate, margin entire, eucamptodromous with 4 pairs of secondary veins, both surfaces densely tomentose, trichomes simple. Inflorescence composed of axillary cymes with 1–5 flowers, peduncles up to 1 cm long, hirsute; bracteoles ca. 0.5 cm long, lanceolate to filiform, apex acute to acuminate, trichomes tomentose, simple; pedicels 0.4 cm long; outer sepals ca. 0.8 × 0.2–0.4 mm, lanceolate, acute to acuminate, pilose, inner sepals narrowly lanceolate, persistent in fruit; corolla ca. 2.2 cm long, the limb 2 cm diam., infundibuliform, white, midpetaline bands pilose to sericeous; stamens 5, unequal, white, three ca. 6 mm long, two 4 mm long, anthers ca. 2 mm long, cream, oblong; pollen 3-colpate, apertural membrane ornamented with small spiny ubisch bodies ( Figs. 4C, D View FIGURE 4 ); ovary fusiform, style divided to the base into 2 equal branches; stigma globose. Capsule ovoid, 1 × 0.8 mm, apiculate, trichomes hirsute, simple; seeds 5 mm long, glabrous, black.

Additional specimens examined (paratypes): — BRAZIL. Goiás: Chapadão do Céu, Mineiros, Parque Nacional das Emas , 1 September 1998, M.A. Batalha 1876 ( SP) ; ibid., 01 November 1998, M.A. Batalha 1967 ( SP) ; ibid., 8 December 1998, M.A. Batalha 2335 ( SP) ; ibid., 3 January 1999, M.A. Batalha 2612 ( SP). Minas Gerais: Morro das Pedras , 26 km N. E de Patrocínio 29 January 1970, H.S. Irwin et al 25578 ( UB). São Paulo: Itirapina, O.F.P. Garcia 47 ( SP) ; ibid., O. Cesar 394 ( SP) .

Etymology: This species is named in honor to the Argentinian botanist Dr. Antonio Krapovickas, a taxonomist of great relevance to the flora of South America and specialist in the taxonomy of Malvaceae and Convolvulaceae . Dr. Krapovickas named many Convolvulaceae from Argentina and Brazil on visits to the SP Herbarium, during one of which he suggested that this species could be something new.

Distribution and ecology: Bonamia krapovickasii is endemic to the Brazilian Cerrado. It is known from the Parque Nacional das Emas in Goiás on the border with the Mato Grosso do Sul and also in Minas Gerais and São Paulo states. Fig. 5 View FIGURE 5 .

Phenology: Flowers and fruits are recorded from March to May.

Conservation Status: Bonamia krapovickasii has an extent of occurrence (EOO) of 255,073.260 km ² and an area of occupancy (AOO) of 20.000 km ² (GeoCAT 2018). Both values suggests that this taxon is threatened because of its restricted range. This indicates that Bonamia krapovickasii fulfils conservation criteria EN B2ab (i,ii,iii) and its conservation status falls within the (EN) endangered category (IUCN 2012). Several populations were observed in an area with great anthropic pressure in São Paulo State, but one of the recorded sites lies in the Emas National Park, a very important reserve in the Cerrado Biome.