Lamourouxia brachyantha Greenman. Proc. Amer. Acad. Arts, 1906

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

3. Lamourouxia brachyantha Greenman. Proc. Amer. Acad. Arts 41: 248. 1906[1905]. Type:— MEXICO. State of Mexico: Rocky hills, Lecheria , Valley of Mexico, 2285 m, 1 July 1904, C.G. Pringle 8815 (Holotype: GH00078567 !; isotypes: BM000953403!, C10018960!, CAS0003141!, CM214042 !, E00394554!, E00394555!, E00394556!, F V0072502F!, F V0072503F!, G00356762!, G00356763!, G00356764!, GOET011025!, HBG511946!, JE00019795, K000533715!, MEXU00527654!, MEXU00031629!, MIN1359267!, MO-525344!, NY00090601!, P02976334!, PH00016825!, S-G-3535!, US 01108432!, US00125694!, VT UVMVT026726!)

Figure 5 A–C .

Herbs 50–100 cm tall, stems solitary or rarely branched at base, erect, herbaceous, glandular-pubescent. Leaves sessile, ovate, 18–35 × 8–18 mm, margin dentate, 9–22 teeth per side, teeth 1–2 mm long; apex acute, base rarely, truncate to cordate or slightly auriculate; coriaceous, glandular-pubescent. Inflorescence a raceme, erect, pedicels thin, 2–4 mm long. Bracts equal along inflorescence, sessile, ovate, 7.7–11 × 4.3–9.3 mm, margin dentate, 7–8 teeth per side, teeth up to 2.5 mm long, apex acute, base truncate to cordate. Calyx campanulate without dots on the surface, 5–12.3 × 5–7 mm, lobes triangular to ovate, 3–6 × 4–5 mm, margin dentate, 3–4 teeth per side, teeth up to 3 mm long, apex acute, glandular-pubescent. Corolla funnelform remarkably galeate, 15–22 × 8–11 mm, upper lip 5–9 mm long, lower lip 8.4–9.5 × 4.5–6.3 mm, lobes 3–5.8 × 1.8–3 mm; whitish or pink to purple, glandular-pubescent. Stamens included 4, filaments ca. 18 mm long, anthers ca. 1.8 mm long. Style 11–21 mm long. Stigma capitate, 1–1.5 mm long. Capsule ovoid, 8.7–12 × 8 mm, glabrous. Seeds not seen.

Etymology: —The specific epithet means short or little flower.

Distribution and Ecology: — Lamourouxia brachyantha is distributed in the central and western states of Ciudad de México, Estado de México, Hidalgo, Jalisco, and Querétaro ( Fig. 5C ). The species is found in grassy slopes, grasslands, xerophytic scrubs ( Prosopis Linnaeus (1767: 282 , 293) and Acacia Miller (1754 : s.n.), chaparral ( Quamoclit Miller (1754 : s.n.), Bacopa Aublet (1775: 128–130) , and Milla biflora Cavanilles (1793: 76) , and rarely in scrubs ( Yucca Linnaeus (1753: 319) at elevations of 2050 to 2680 m.

Phenology: —Flowering and fruiting from May to October. Frequently collected from July to September.

Examined specimens: — MEXICO. Ciudad de México: Gustavo A. Madero, La Armella , a 3230 m en LR en dirección SO de Picacho El Fraile, 2680 m, 14 September 2005, Espinosa et al. 196 ( MEXU!); Cerro Chiluca, Sierra de Guadalupe , cerca de Ayucan, August 1952, Paray 146 ( ENCB!); Cerro Cuautepec, Sierra de Guadalupe , 15 July 1951, Matuda 21218 ( MEXU!); Sierra de Guadalupe , 2600 m, 12 September 1997, E. Martínez & J. Martínez 28523 ( MEXU!), 30 September 1950, Matuda & Paray 21346 ( MEXU!), 11August 1940, Miranda 586 ( MEXU!), September 1953, Paray 1173 ( ENCB!). Estado de México: Atizapán de Zaragoza , 5 km al N, 12 September 1965, Rzedowski 20915 ( ENCB!, MEXU!). Huehuetoca, Cerro Sincoque , 2400 m, 17 October 1976, Acosta 44 ( IBUG!); 6 Km al N de Tepotzotlán, 2300 m, 12 October 1980, Alva 54 ( ENCB!); Cerros al N de Huehuetoca, 2300–2470 m, 12 August 1951, Gold & Kherborle 21768 ( MEXU!). Ixtapaluca, ladera SW del Cerro del Pino , 03 October 1976, Vega 103 ( ENCB!). Polotitlán, along Highway 57 ca. 70 miles NW of Mexico City, ca. 4 miles S of Encinillas, 2400 m, 25 August 1977, Croat 44070 ( MEXU!). Temascalcingo, Ladera SE Cerro La Manga , 2400 m, 16 August 1980, Romero-Rojas 218 ( ENCB!). Tenancingo de Degollado, Cercanía de Tenancingo , 23 August 1953, Matuda et al. 28973 ( MEXU!). Tlalnepantla de Baz, Rancho “El Copal”, cerca de San Juan Ixhuatepec, 2350 m, 10 August 1970, Rzedowski 27445 ( ENCB!). Tultitlán de Mariano Escobedo, Lechería , 01 July 1904, Pringle 8815 ( BM!, C!, CAS!, CM!, E!, F!, G!, GH!, GOET!, HBG!, J!, K!, MEXU!, MO!, NY!, PH!, S!, US!, VT!). Autopista México-Querétaro, 1 km antes de la salida a San Francisco y San Agustín , lado norte, 2412 m, 03 August 2001, Vibrans 7476 ( MEXU!); Lomas de Atizapán y Chiluca , 2300 m, 07 September 1980, A. Ventura 3661 ( MEXU!, XAL!); Sierra de Alcaparrosa , cerca de la estación de microondas, 2700 m, 21 September 1973, Rzedowski 31235 ( ENCB!). Hidalgo: Tula de Allende, Cañón de las Ajuntas , Santa María Macuá , 2150 m, 10 July 2003, Romero & Rivera-Hernández 188 ( MEXU!). Jalisco: Zapopan, Las Agujas , 07 May 1981, Mora-Gómez s.n. ( IBUG!). Querétaro: Amealco de Bonfil, km 6.5 de la carretera a Huimilpan , 2050 m, 11 August 1990, Serrano 51 ( MEXU!); Huimilpan, km 8 Huimilpan, Qro. y Los Cues , Méx. , 2250 m, 20 July 1986, Argüelles 2582 ( MEXU!); Área Natural Protegida El Tángano, 2175 m, 21 July 2004, Balderas 657 ( MEXU!). San Juan del Río , 2 km al N de Cazadero, 2250 m, 26 August 1989, Rzedowski 48760 ( ENCB!, IBUG!, MO, XAL!). San Miguel de Allende, camino a San Miguel de Allende , 2000 m, 20 July 1975, Argüelles 173 ( MEXU!), km 8–9 aprox, no date, Argüelles 1426 ( ENCB!).

Figures

FIGURE 5. Lamourouxia brachyantha. A) Flowers. B) Inflorescence in the field. C) Distribution map. Lamourouxia colimae (Holotype, McVaugh et al. 18077). D) Dry inflorescence. E) Dry leaves. F) Distribution map. Credits in Appendix I.