Curtia tenuifolia Knoblauch (1894: 323)

Tanajura, Jéssica Leão Barbosa, Pinho, Carolina Santos, Silva, Rilquer Mascarenhas Da & Carvalho, Maria Luiza Silveira De, 2021, Integrative assessment of the floristic diversity of Gentianaceae in an area of campo rupestre of the Espinhaço Range in the state of Bahia, northeastern Brazil, Phytotaxa 500 (2), pp. 61-94 : 73

publication ID	https://doi.org/ 10.11646/phytotaxa.500.2.1
persistent identifier	https://treatment.plazi.org/id/03E75B53-FFC0-9E1E-81C2-21BB3D0F4A0D
treatment provided by	Marcus
scientific name	Curtia tenuifolia Knoblauch (1894: 323)
status

Treatment

Curtia tenuifolia Knoblauch (1894: 323) View in CoL Fig. 3D View FIGURE 3 .

Herbs, ca. 40 cm tall. Branches green, cylindrical, costate. Leaves opposite, sessile, discolorous, blades 1.2 × 0.2 cm, linear, membranaceous, glabrous, attenuate at base, acute at apex, entire at margin. Inflorescence in terminal biparous cyme, 4-flowered, sessile. Flowers heterostylous, 5-merous, pedicel ca. 1 cm; calyx 0.3 × 0.2 cm, green to vinaceous, keeled, not winged, tubular, glabrous; corolla yellowish, pink or purple, infundibuliform, tube 4.3 × 2 mm, lobes 3.6 × 6.6 mm, base elliptic to obovate, apex acute; stamens 4.7 mm, isodynamous, adnate, conation 0.7–1.1 cm, anthers basifixed; ovary 1–1.2 × 0.2–0.6 cm, style ca. 2 cm, stigma bilobed. Fruit septifragal capsule.

Habitat and distribution:— Curtia tenuifolia is distributed throughout the American continent, with the exception of North America, having been collected in areas of “campo limpo”, “campo rupestre”, Cerrado and “Amazonian savanna” ( Crespo & Marcondes-Ferreira 2009, Siqueira et al. 2014, Bissoli & Calió 2020). In Brazil, it has confirmed occurrences for the states of Acre, Amazonas, Amapá, Pará, Roraima, Bahia, Maranhão, Pernambuco, Distrito Federal, Goiás, Mato Grosso do Sul, Mato Grosso, Minas Gerais, São Paulo, Paraná, Rio Grande do Sul and Santa Catarina ( Bissoli & Calió 2020) ( Fig. 3D View FIGURE 3 , Appendix 1).

Comments:—This is the only species of the genus that presents heterostyly, its flowers being tristylous. In addition, the variation in color and flower size justify the several synonyms of this species (Crespo & Marcondes- Ferreira 2009, Siqueira et al. 2014). Found with flowers and fruits all year round ( Crespo & Marcondes-Ferreira 2009, Siqueira et al. 2014).

Specimens examined:— BRAZIL. Bahia: Mucugê, Centro do Projeto Sempre Viva, trilha para o Tiburtino , próximo aos Rios Piabinha e Cumbuca , 25 March 2000, fl., A . M Giulietti 1950 ( HUEFS!) .