Bertolonia angustipetala Bacci & R. Goldenberg

2. Bertolonia angustipetala Bacci & R. Goldenberg View in CoL (in Bacci et al. 2018: 271). Figures 2b View FIGURE 2 , 4 View FIGURE 4 .

Herbs ca. 20 cm tall, terrestrial or epiphytic. Stem 2–3 mm wide, rounded, moderately glandulose-punctate (trichomes less than 0.1 mm long). Leaves opposite; petioles 1–2.2 cm long, quadrangular, moderately glandulose-punctate and sparsely glandulose-pilose (trichomes ca. 0.5 mm long); blades 3.9–8 × 1.8–3.7 cm, flat, elliptic, base rounded to shortly attenuate, apex acute, margins entire, sparsely ciliate, adaxial surface dark green, sparsely glandulose-punctate (trichomes less than 0.1 mm long, brownish), abaxial surface vinaceous, sparsely to moderately glandulose-punctate (trichomes less than 0.1 mm long, brownish), main veins 3, plus two pairs that do not reach the leaf apex, basal. Inflorescences terminal, 6–17 cm long ( 6.3–8.7 cm long in infructescences), branches sparsely to densely glandulosepunctate, sparsely glandulose-punctate when old. Bracts not seen; bracteoles ca. 1 mm long, narrow-lanceolate, apex acute, both surfaces glandulose-punctate. Hypanthium 4–5 × 3.5–4 mm, short-terete, glandulose-punctate and glandulose-villose. Sepals elliptic, apex rounded to acute, margins entire, ciliate, both surfaces glandulose-punctate and glandulose-villose. Petals 7–8.5 × 1.5–2 mm, light pink, linear-lanceolate, base slightly uncinate, apex apiculate, the apiculum ca. 1 mm long, with a caducous gland head, margins entire, eciliate, both surfaces papillose, otherwise glabrous. Stamens 7–8 mm long; filaments 3.5–4 mm long; anthers 3.5–4 mm long, cream colored, oblong-subulate, surface smooth undulate, pore rounded, non-thickened margins, introrse; connective shortly prolonged (ca. 0.5 mm), unappendaged. Style 5–7 mm long, straight or curved at the apex, glabrous. Fruits ca. 0.6 × 0.8 cm. Seeds reniform.

Examined material: — BRAZIL. Bahia: Wenceslau Guimarães, Bacci 26 7 ( UEC!); Goldenberg 20 77 ( HURB!, UPCB!); Jardim, J.G. 5040 ( CEPEC!, NY, UPCB!).

Conservation Status: — Bertolonia angustipetala has an EOO of 0.010 km ² and AOO of 0.035 km ², and should be classified as “Critically Endangered” (CR), following IUCN (2017) categories. This species has been collected only three times within the “Estação Ecológica Estadual Wenceslau Guimarães”.

Notes: — Bertolonia angustipetala is endemic to Bahia, occurring in montane rainforests ( Fig. 3b View FIGURE 3 ). Collected with flowers in December and fruits in May and December. Bertolonia angustipetala is characterized by the small (3.9–8 × 1.8–3.7 cm) and elliptic leaf blades, these sparsely glandulose-punctate, and linear-lanceolate and apiculate petals. It shares with Bertolonia cuspidata Bacci & Amorim in Bacci et al. (2018: 772) the membranaceous, glandulosepunctate leaf blades with entire margins. However, Bertolonia angustipetala differs by the smaller leaf blades (3.9–8 × 1.8–3.7 cm) with an acute apex ( vs. bigger leaf blades,7.3–12.2 × 3.9–6 cm, with a cuspidate apex in B. cuspidata ) and linear-lanceolate petals ( vs. elliptic or obovate petals; Bacci et al. 2018). For more details, see notes under B. angustipetala in Bacci et al. (2018) and Table 1 View TABLE 1 .