Elaphoglossum quisqueyanum A.Vasco, 2011

Vasco, A., 2011, Taxonomic revision of Elaphoglossum subsection Muscosa (Dryopteridaceae), Blumea 56 (2), pp. 165-202 : 194-196

13. Elaphoglossum quisqueyanum A.Vasco , sp. nov. — Fig. 1m , 14; Map 14

Haec species quoad habitum terrestrem, squamas rhizomatis ciliatas et laminae foliaris squamas abaxiales densas imbricatas leviter arcuatas Elaphoglosso engelii similis,sed ab eo rhizomatis crassioris ramosi squamarum ciliis paucioribus longioribus (usque ad 0.6 mm) et sporis papillosis porcatis differt.— Typus: Ekman 13556 (holo NY;iso F, GH,US), Dominican Republic, Ázua, Cordillera Central, Loma de la Mediania, [19°04'N, 71°07'W], 2600 m, 15 Sept. 1929 .

Plants terrestrial. Rhizome 5–10 mm wide, long-creeping; rhizome scales 8 –11 mm long, linear-lanceolate, maroon to dark brown, sometimes bicolorous, margin lighter, ciliate, denticulate to ciliate (the cilia up to 0.6 mm long), base truncate, apex filiform. Sterile leaves 20–45 cm long, approximate to up to 1 cm apart; phyllopodia present, sometimes obscured by the petiole-base scales; petiole 8 –25 cm long, 2/5 –3/5 the length of the sterile leaves; larger petiole scales 4 –7 mm long, dense, spreading, sometimes pointing forward, linear-lanceolate to oblanceolate, from orange to brown or mottled, darker at the point of attachment, erose to ciliate, base cordate (sometimes appearing peltate because of the large auricles), apex acute; smaller petiole scales 0.5 – 2(–3) mm long, dense, appressed,

195 oblanceolate to round, from orange to brown, darker at the point of attachment, ciliate, base cordate, apex acute; lamina 9 – 28 by 2.1–4.2 cm, linear-lanceolate to oblanceolate, coriaceous, glabrescent with age, base truncate to rounded, apex obtuse; veins 1–1.5 mm apart, at an angle of 75° with respect to the costa; adaxial laminar scales 1.5– 3 mm long, dense, imbricate, oftentimes pointing downwards, lanceolate, white to light brown, ciliate, base cordate, apex acute; abaxial laminar scales 1–3.5 mm long, dense, imbricate, slightly elevated above the surface of the lamina, lanceolate to oblanceolate, from orange to brown, darker at the point of attachment, ciliate, base stalked (up to 0.4 mm), apex acute; abaxial costal scales same as the laminar ones, longer; marginal scales same as the laminar ones. Fertile leaves longer than the sterile leaves; petiole 3/5– 3/4 the length of the fertile leaves; petiole scales same as the ones of the sterile leaves but the larger ones more spreading; lamina 9.5 – 20 by 1–2.1 cm, narrowly elliptic, coriaceous, base truncate to broadly cuneate, apex acute to obtuse; adaxial laminar scales 1–3 mm long, dense, imbricate, lanceolate, from orange to brown, darker at the point of attachment, ciliate, base cordate, apex acute; abaxial costal scales 1–4 mm long, dense, pointing forward to the apex or at right angles, slightly elevated, lanceolate to round, from light to dark brown, darker at the point of attachment, ciliate, base cordate (sometimes appearing peltate because of the large auricles), apex acute; intersporangial scales 1–2.5 mm long, scattered, lanceolate, from light to dark brown, ciliate, base cordate to truncate, apex acute. Spores papillate, with ridges.

10 cm 1 cm h g 1 cm i e f 1 mm j 1 mm d a c 0.5 mm b 2 mm 1 mm

Distribution — Dominican Republic, provinces of Ázua and La Vega; 2000– 2800 m. Terrestrial in cloud forests.

Selection of other specimens examined. DOMINICAN REPUBLIC, Ázua, between Valle Nuevo and Azua , [18°47'N, 70°38'W], 2000–3000 m, 24 Dec. 1964, Jones 1119 ( GH, NY) . La Vega, in Loma Rosilla , 2700 m, 6 Aug.1912, Fuertes 1808 ( GH, NY, US) ; Valle Nuevo ,[18°48'N, 70°41'W], 2300 m, 5Apr. 1947, Jiménez 1379 ( NY, US) ; 11 km S of Constanza, vía el Convento, on road to San José de Ocoa , vic. of El Convento, 18°51'N, 70°41'W, 1500 m, 24 July 1980, Mejía 7650 ( NY) ; Pico Alto de la Bandera , E de Valle Nuevo, 18°48'N, 70°38'W, 2790–2800 m, 14 May 1982, Zanoni 20681 ( JBSD) ; Cordillera Central , 31.9 km S de Constanza (camino vía Río Grande), 6 km N del monumento La Pirámide, 18°46'N, 70°37.5'W, 2225 m, 11 June 1982, Zanoni 20917 ( JBSD, MO, NY) .

Notes — Elaphoglossum quisqueyanum is characterized by a terrestrial habit, long-creeping rhizomes, maroon to dark brown, linear, denticulate to ciliate rhizome scales, erose to ciliate larger petiole scales, and papillate, ridged spores. It resembles E. engelii , a species from Central and South America, but differs by its thicker (5–10 mm wide) rhizomes, rhizome scales denticulate to ciliate, the cilia up to 0.6 mm long, and papillate, ridged spores. In contrast, E. engelii has thinner (4– 8 mm wide) rhizomes, scales that when ciliate, have abundant cilia that are no longer than 0.4 mm, and spores with ridges and irregular deposits.

The specimen Jones & Norris 1119 (NY) is a small form of this species, with thinner rhizomes and smaller leaves, but is otherwise typical.

The specific epithet refers to Quisqueya, the name given by the indigenous peoples, the Tainos, to the Dominican Republic, where this species is endemic. In the Taino language quisqueya means ‘Mother of the Earth’.

Figures

Map 14 Distribution of Elaphoglossum quisqueyanum A.Vasco.

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.