Elaphoglossum ruficomum Mickel

Vasco, A., 2011, Taxonomic revision of Elaphoglossum subsection Muscosa (Dryopteridaceae), Blumea 56 (2), pp. 165-202 : 196-198

14. Elaphoglossum ruficomum Mickel — Fig. 1n , 15 ; Map 12

Elaphoglossum ruficomum Mickel (1991) 159 (‘ ruficomus ’). — Type: Sagástegui et al. 12091 (holo NY; iso GH), Peru, Cajamarca, Celendín, Sendamal, ruta a Celendín , 3050 m, 17 Aug. 1984 .

Plants terrestrial. Rhizome 8 –11 mm wide, compact; rhizome scales (6–)12–16(– 20) mm long, linear, red-orange, lustrous, entire to denticulate, base truncate, apex filiform. Sterile leaves (8–)16– 30(– 55) cm long, approximate; phyllopodia present, obscured by the petiole-base scales; petiole (3.5 –)7–17(–27) cm long, 1/3 –2/5 the length of the sterile leaves; larger petiole scales (3–) 4 –6 mm long, dense, spreading, linear-lanceolate, light brown, sometimes dark brown or mottled, ciliate, base cordate (sometimes appearing peltate because of the large auricles), apex acute; smaller petiole scales 0.5 –1(– 3) mm long, dense, appressed, oftentimes hidden by the larger ones, oblanceolate to round, light brown, sometimes black or mottled with lighter margin, ciliate, base cordate (sometimes appearing peltate because of the large auricles), apex acute; lamina (5–)10–17(–27) by 1.4 –3.5 cm, narrowly elliptic to oblanceolate, coriaceous, glabrescent with age, base broadly cuneate to rounded, apex obtuse to acute; veins 1– 2 mm apart, at an angle of 75– 80° with respect to the costa; adaxial laminar scales 1– 3 mm long, dense, imbricate, pointing downwards, lanceolate, white, the costal ones sometimes darker at the point of attachment to completely black, ciliate, base cordate to short-stalked, apex acute; abaxial laminar scales 1– 3 mm long, dense, imbricate to scattered, slightly elevated above the surface of the lamina to patent, lanceolate to oblanceolate, light brown, sometimes darker at the point of attachment, ciliate, base cordate to short-stalked (up to 0.2 mm), apex acute; abaxial costal scales same as the laminar ones, pointing forward to apex or at right angles, slightly elevated; marginal scales same as the laminar ones. Fertile leaves equal to longer than the sterile leaves; petiole 2/5– 3/5 the length of the fertile leaves; petiole scales same as the ones of the sterile leaves but the larger ones more spreading; lamina 8 –20(– 25) by 0.8– 2.5 cm, narrowly elliptic, coriaceous, base truncate to broadly cuneate, apex obtuse; adaxial laminar scales 1–2.5 mm long, dense, imbricate, lanceolate, white to light orange, ciliate, base cordate to short-stalked (less than 1 mm), apex acute; abaxial costal scales 1–3 mm long, dense, pointing forward to the apex or at right angles, slightly elevated to patent, lanceolate to round, orange to black with lighter margin, ciliate, base cordate to short-stalked, apex acute; intersporangial scales 1– 2 mm long, absent to scattered, lanceolate, orange, sometimes darker at the point of attachment, ciliate, base cordate, apex acute. Spores papillate, without ridges.

Distribution — Peru, Bolivia; 1900– 4300 m. Usually terrestrial in montane and cloud forests and in páramos.

1 mm

197

b

Selection of other specimens examined. PERU, Amazonas, Prov.Chachapoyas, Cerros Calla Calla, E side, 19 km above Leimebamba on road to Balsas, [6°55'N, 77°45'W], 3100 m, 6 June 1964, Hutchison 5567 ( GH, NY, UC) . Ancash, Prov. Yungay, Huascarán National Park , quebrada Paria, 8°57'S, 77°33'W, 4200 m, 13 Jan. 1985, Smith et al. 9174 ( MO, NY) . Apurimac, 5 km N of Huancarama , [13°38'S, 73°05'W], 3500 m, 6 Nov. 1935, West 3801 ( UC) . Ayacucho, Prov. La Mar , E massi of the Cordillera Central opposing the cordillera Vilcabamba between Tambo San Miguel, Ayna and the Hacienda Luisiana, 12°45'S, 73°53'W, 24 Aug.1968, Dudley 12057 ( GH, MO, US) . Cajamarca, Prov. Cajabamba, Cajabamba-Luchubamba, 3800 m, 17 Nov. 1983, Sagástegui et al. 11200 ( GH, MO, NY) . Cusco, Prov. La Convención, Dist. Vilcabamba, Vilcabamba La Vieja , 13°07'S, 72°59'W, 1892 m, 20 Sept. 2003, Calatayud et al. 1873 ( MO, NY, UC) . Huánuco, Pampayacu, [11°09'07"S, 76°36'15"W], 17 Jan. 1927, Kanehira 164 ( GH, US) . Junín, Prov. Huancayo, Torre-Torre, [12°04'S, 75°14'W], Feb. 1948, Soukup 3593 ( F, US) . La Libertad, Prov. Sánchez Carrión ,road from Trujillo to Huamachuco, at edge of escarpment where road begins descent toward Aricapampa, 4000 m, 22 Feb.1982, Dimmitt 1135 ( NY) . Lambayeque, Prov. Ferreñafe,c. 7 km NW of Incahuasi ,near Cerro Punamachay on trail to laguna Ualtaco, [6°14'S, 79°19'W], 16 Nov. 1984, Dillon 4116 ( F, GH) . Pasco, Prov. Oxapampa, Dsit. Huancabamba, sector Santa Barbara-Milpo, 10°22'55"S, 75°37'19"W, 1 Feb. 2005, Mellado 2725 ( MO, NY) . Puno, Prov. Carabaya, 10 km S of Ollachea , [13°49'S, 70°29'W], 13 Aug. 1980, Boeke 2970 ( HUA, MO, NY) . San Martín, Prov. Mariscal Cáceres,Puerta del Monte valley, Río Abiseo National Park , [7°45'S, 77°15'W], 3550 m, 11 Mar. 1988, León 1441 ( NY) . – BOLIVIA, La Paz, Prov. Murillo, Valle de Zongo , Santa Rosa, 3 km hacia La Paz, [16°09'S, 68°07'W], 3030 m, 8 Apr. 1979, Beck 1094 ( LPB, NY) ; Prov. Larecaja, Gran Poder, small gold mine about 40 km N of Sorata , below Tacacoma, [15°38'S, 68°39'W], 3000 m, 7 June 1950, Brooke 6447 ( BM, F, NY) ; Prov. Nor Yungas, Unduavi, [16°19'S, 67°54'W], 3200 m, Feb. 1914, Buchtien s.n. ( F, NY) ; Prov. Murillo, Zongo Valley , c. 62 km from La Paz, the Chaca, Pampa turn off, 16°11'10"S, 68°08'10"W, 3500 m, 5–6 Aug. 1990, Fay 2868 ( LPB, MO, NY, UC) .

Notes — Elaphoglossum ruficomum can be distinguished from all other species of subsect. Muscosa by its long ((6 –) 12– 20 mm), linear, bright red-orange rhizome scales. Also distinctive are its terrestrial habit and compact rhizomes. It differs from E. engelii by the long, entire to denticulate rhizome scales and papillate spores. Elaphoglossum engelii has scales that are typically up to 12 mm long, ciliate, with many teeth longer than 0.2 mm, and spores with ridges and irregular deposits.

See E. lehmannianum for a comparison with that species.

Figures

Map 12 Distribution of Elaphoglossum oculatum Mickel (:) and E. ruficomum Mickel ($).

Fig. 1 Spores of Elaphoglossum subsect. Muscosa. a. E. aschersonii; b. E. bellermannianum; c. E. corderoanum; d. E. engelii; e. E. gardnerianum; f. E. glabrescens; g. E. laxisquama; h. E. lehmannianum; i. E. muscosum; j. E. novogranatense; k. E. oculatum; l. E. oreophilum; m. E. quisqueyanum; n. E. ruficomum; o. E. yatesii (a: Moran 7645, NY; b: Meier 302, NY; c: Holm-Nielsen 3260, AAU; d: Sánchez 465, US; e: Wacket 186, UC; f: Buchtien 2725, US; g: Vásquez 28162, NY;h: Ruíz-Terán 976, NY;i: Underwood 3212, NY;j: Vasco 746, NY; k: Hutchison 1629, UC;l: Holm-Nielsen 19071, AAU; m: Zanoni 20917, NY;n: Sagástegui 12091, NY; o: Navarrete 1402, NY). — Scale bars = 10 µm.

Fig. 15 Elaphoglossum ruficomum Mickel. a. Habit; b. rhizome scale; c. larger petiole scale; d. smaller petiole scale; e. abaxial laminar surface; f. abaxial laminar scale; g. adaxial laminar surface; h. fertile lamina; i. fertile costal scale (all: Boeke 2970, HUA and NY).