Lamourouxia zimapana Turner. Phytologia, 1993

Francisco-Gutiérrez, Antonio, Ruiz-Sanchez, Eduardo, González, Dolores & Lira-Noriega, Andrés, 2023, Lamourouxia (Orobanchaceae) of Mexico, Phytotaxa 582 (1), pp. 1921-1935 : 1921-1935

26. Lamourouxia zimapana Turner. Phytologia 74(6): 465–466. 1993. Type:— MEXICO. Hidalgo: Barranca de San Vicente , near km 238 on highway between Zimapan and Jacala, 1800–2000 m, 9 August 1948, H.E. Moore Jr. & C.E. Wood Jr. 4429 (Holotype: TEX00372917 !; isotype: MEXU00111148 !)

Figure 16 F–H .

Sub-shrubs up to 80 cm tall, stems branched along the plant, erect, woody, pubescent, non-glandular. Leaves petiolate, petioles 0.5–2 mm long, elliptic to elliptic-oblanceolate, rarely oblong, 7.6–25 × 1.7–7 mm, margin dentate or crenate in the upper half, 2–5 teeth per side, teeth ca. 1 mm long; apex obtuse, base attenuate; membranous, pubescent, nonglandular. Inflorescence a raceme, erect, pedicels claviform, 4–6 mm long. Bracts equal along inflorescence, sessile, elliptic to spatulate, 10–20 × 3–5 mm, margin dentate in the upper half, 1–3 teeth each side, teeth 1–2 mm long, apex obtuse, base attenuate. Calyx tubular without dots on the surface, 6.5–12 × 4–5 mm, lobes ovate to elliptic, 2.4–5 mm long, apex obtuse, rounded or apiculate, pilose, non-glandular. Corolla funnelform, 30–40 × 6.1–10 mm, upper lip 12 mm long, lower lip 6.4–10 mm long, lobes 3.1–3.9 mm × 0.9–2.1 mm; orange to red, shortly pubescent, non-glandular. Stamens exserted 4, filaments and anthers not seen. Style and stigma not seen. Capsule ovoid to ellipsoid, 9.1–11.6 × 4.9–5.9 mm, glabrous. Seeds not seen.

Etymology: —The name refers to the municipality of Zimapán, Hidalgo, near to the site where the type was collected.

Distribution and habitat: —The species is endemic from Mexico and is distributed in the states of Hidalgo, Oaxaca, Puebla, Querétaro, and Veracruz ( Fig. 16H ). Previously, the species was only known from the type locality in the state of Hidalgo ( Turner 1993). Most of the specimens of this taxon were collected in xerophytic scrubs (with Arctostaphylos ), and rarely in pine forests, Cupressus forests, or oak forests. Its elevational range of distribution is 1400–3100 m.

Phenology: —The revised collections of this species show a short period of flowering from August to November and January. Most specimens were collected from August and September (seven of 10 specimens). Fruits are recorded from November.

Examined specimens: — MEXICO. Hidalgo: Ixmiquilpan, Cerro Banxu , 4 km al N de Orizabita, 2400 m, 14 October 1965, González 3127 ( MEXU!) . Tasquillo, Cerro de Juárez , 2700 m, 20 September 1952, Matuda & Paray 21345 ( MEXU!) , September 1950, Paray 176 ( ENCB!) , 05 August 1956, 2032 ( MEXU!) . Zimapán, Barranca de San Vicente, near km 228 on highway between Zimapan and Jacala , 1800–2000 m, 09 August 1948, Moore & Wood Jr. 4429 ( BH, MEXU!, TEX!) . Oaxaca: San Bartolomé Quialana, Cerrro Yuubidan ( Picacho ), cima del cerro, 3.5 km en línea recta al S de San Bartolomé Quialana, 2920 m, 25 January 2014, Carrillo-Reyes et al. 7236 ( IBUG!) . Puebla: Tepeyahualco , a 13 km a 15 minutos de Tepeyahualco, Calzada et al. 4681 ( MEXU!, XAL!) ; Volcán Pizarro , 6 km a 60º de Tepeyahualco, Calzada et al. 4696 ( XAL!) . Querétaro: Pinal de Amoles, parta alta del cerro Pingüical , más o menos 2 km al W de la antena, S. Zamudio 6869 ( MEXU!) . Veracruz: Perote, cerro Alto del Vigía , al N de Frijol Colorado, 2700 m, 10 November 2013, Cházaro & Rodríguez 10660 ( XAL!) .

Figures

FIGURE 16. Lamourouxia xalapensis. A) Habit. B) Detail of a flower. C) Mature fruits and senescent leaves. D) Young leaves. E) Distribution map. Lamourouxia zimapana. F, G) Inflorescence. H) Distribution map. Credits in Appendix 1.