Tabernaemontana eubracteata A. O. Simoes & M. E. Endress
Creators: name: Alvarado-Cárdenas, Leonardo O.
name: Lozada-Pérez, Lucio
name: Cadena, Joselin
name: Hernández, Sofia Islas-
name: Martínez-González, C. Ramiro
name: Cortez, Ericka B.
name: González- Martínez, César A.
name: González-Ramírez, Ixchel S.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Gentianales
Apocynaceae
Tabernaemontana
Tabernaemontana eubracteata

description: 8. Tabernaemontana eubracteata (Woodson 1928: 368) A.O. Simões & M.E. Endress in Simões et al. (2010:787).   
 Stemmadenia eubracteata Woodson. (Fig. 2, 3)   
 Type:— GUATEMALA. Santa Rosa: Volcan Tecuamburro, 2000 m, Feb 1893, E.T. Heyde & E. Lux 4538 (holotype GH 00063304!, isotypes BM 000617622, F V0043830F!, K 000587854!, M 0183512!, US 00111882!).   
 Treelets or shrubs 1.5–6 m tall. Petioles 0.5–1.2 cm long; blades 3–12 × 1.8–4.5 cm, membranaceous, elliptic to ovate, base obtuse to acute, apex acuminate, margin entire, glabrous on both sides, to spreading pubescence abaxially. Inflorescence 1–4 flowers, peduncle 1–5 mm; bracts 2.5–6 mm long, ovate-lanceolate to linear, greenish to scarious; pedicels 4–8 mm long; sepals equal to subequal, (0.5) 0.8–1.0 cm long, ovate to ovate-lanceolate, obtuse to acute, conspicuous venation; corolla narrowly infundibuliform, yellow, lower tube 1.1–1.5 × 0.3–0.6 cm, twisted around the anthers, five staminal ridges present, upper tube 0.3–0.65 × 0.6–0.8 cm, slightly campanulate, white, suprastaminal corona of five wing-shaped lobes present, opposite the anthers, along the tube, limb lobes 1.5–2 × 1.5–1.7 cm, obovate; stamens inserted above the middle of the corolla tube, anthers 3–4 mm long, included, yellow; pistil 0.7–1.5 cm long, nectary present. Follicles 2.5–3.7 × 1.8–2 cm, obliquely ellipsoid, apiculate, with 2 lateral ridges, not lenticellate, greenish to brownish, smooth to striate, glabrous; seeds 8–9 mm long.   
 Habitat and phenology:— Evergreen forest and secondary vegetation, from 130– 662 m. Flowering and fruiting from February to July.   
 Distribution: —In Mexico (Chiapas, Guerrero, Oaxaca, Tabasco, and Veracruz, Fig. 6c), Guatemala, Honduras, and El Salvador.   
 Conservation status: —Endangered (EN). T. eubracteata is restricted to a few localities in Mexico (EOO 25,381 km 2 and AOO 20 km 2), corresponding to less than 1% of the country. Although it can tolerate some anthropogenic impact, it grows in zones with significant deforestation, such as Tabasco (Pérez et al. 2005). The individuals in this state represent the populations most at risk of extinction. Here, we suggest assigning the category of endangered.   
 Additional specimens examined:— MEXICO. Chiapas: Mun. Tuxtla Gutiérrez, Sendero al N del mirador Los Chiapa, parque nacional Cañón del Sumidero, 1257 m a.s.l., 27 Aug 2007, Espinosa 392 (MEXU); Mun. Villa de las Flores, 3 km al NE de California, 785 m a.s.l., 08 Jul 2004, Martínez 36772 (MEXU). Guerrero: Mun. Atoyac de Álvarez, en El Ranchito, 13 km al NE de El Paraíso, 1100 m a.s.l., 23 Apr 1985, Soto 8433 (MEXU). Oaxaca: Mun. Asunción Ixtaltepec, 50 m al S de la Brecha a Cieneguilla, ladera N del Cerro Timbón, 310 m a.s.l., 11 Sep 2002, Salas 4580 (HUAP); Mun. San Miguel Chimalapa, El Peñasco, 3–4 km al W de paraje Palmero El Gringo al N de Tres Picos, 1550 m a.s.l., 06 May 1986, Maya 3288 (MEXU). Tabasco: Mun. Huimanguillos, Entrada del ejido Villa de Guadalupe, viniendo de la Colonia Las Flores, 260 m a.s.l., 5 Apr 1998, Guadarrama 6317 (MEXU). Veracruz: Mun. Mecayapan, Crater del volcán Santa Marta, SE del río Xochiapan, 670 m a.s.l., 15 Jun 1985, Calzada et al. 11436 (XAL)   
 Common names and uses: —There are no common names or uses registered.
description: Published as part of Alvarado-Cárdenas, Leonardo O., Lozada-Pérez, Lucio, Cadena, Joselin, Hernández, Sofia Islas-, Martínez-González, C. Ramiro, Cortez, Ericka B., González- Martínez, César A. & González-Ramírez, Ixchel S., 2019, The triad of knowledge: Systematic, diversity and conservation status of the Mexican species of Tabernaemontana (Apocynaceae; Rauvolfioideae: tribe Tabernaemontaneae), pp. 1-46 in Phytotaxa 388 (1) on pages 25-26, DOI: 10.11646/phytotaxa.388.1.1, http://zenodo.org/record/13725393