Tabernaemontana mixtecana L.O. Alvarado & Juárez Jaimes (2012: 336)

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), Phytotaxa 388 (1), pp. 1-46 : 31

publication ID	https://doi.org/ 10.11646/phytotaxa.388.1.1
DOI	https://doi.org/10.5281/zenodo.13725428
persistent identifier	https://treatment.plazi.org/id/03F3DE42-3806-FFE1-72D5-FC089D7AF91B
treatment provided by	Felipe
scientific name	Tabernaemontana mixtecana L.O. Alvarado & Juárez Jaimes (2012: 336)
status

Treatment

12. Tabernaemontana mixtecana L.O. Alvarado & Juárez Jaimes (2012: 336) View in CoL . ( Fig. 3 View FIGURE 3 ).

Type:— MEXICO. Oaxaca: Municipio de Huajuapam de León, Carretera Huajuapan-Tamazulapan Km. 19, 1850 m, 1 agosto 1983 (fr). F. Takaki y cols. s.n. (holotype INEGI 7863!, isotype INEGI 10181!)).

Probably shrubs unknown height. Petioles 3–6 mm long; blades 5–10 × 2–3.5 cm, membranaceous, ovate to elliptic, base acute, apex short acuminate, margin entire, glabrous on both sides. Inflorescence not seen. Follicles 3–3.5 × 2– 2.2 cm, obliquely ellipsoid, obtuse to slightly acute, with 2 slight ridges, not lenticellate, yellowish, muricate, glabrous; seeds 7–8 mm long.

Habitat and phenology: —Transition from desert scrub to tropical deciduous forest, with an elevation 1850 m a.s.l. Flowering unknown, fruiting known only in August.

Distribution: —Endemic to Mexico. In the state of Oaxaca ( Fig. 6g View FIGURE 6 ).

Conservation status: —Critically endangered to probably extinct (CR, EX). Tabernaemontana mixtecana is only known from the type material from the locality of Huajuapam, and efforts to find another population have failed. The first author visited the locality twice, but the area showed a high level of anthropogenic disturbance. Reviews of the sheets in several herbaria provided no evidence of another specimen of the species.

Common names and uses: —There are no common names or uses registered.

Notes: — This species was described by Alvarado-Cárdenas and Juárez-Jaimes (2012) based on a single specimen, collected by Takaki and collaborators in the northwestern portion of Oaxaca, Mexico. The authors mentioned that the collector number was Takaki and cols. 7863. However, we found that the collections of Takaki are not numbered, and the number associated with the specimen corresponded to the herbarium collection.