72 SPECIES PLANTARUM — FLORA OF THE WORLD (2002) Figure 1<strong>6.</strong> <strong>Luzula</strong> excelsa. A, habit; B, terminal part of partial inflorescence. (E.W.D.Holway & M.M.Holway 619, US). Scale bars: A = 5 cm; B = 2 mm. Drawn by K.Tind. Reproduced with permission, from H.Balslev, Fl. Neotrop. Monogr. 68: 64, fig. 33 (1996), © 1996, The New York Botanical Garden.
<strong>JUNCACEAE</strong> (<strong>Luzula</strong>) 1908, F.Kurtz 15129 (CORD). ARGENTINA SOUTH : Chubut. Tehuelches, Lago Vintter, 29 Jan 1995, E.Nicora 10083 (SI); Neuquén, Ñorquín, Copahué, 2000 m, C.A.O’Donnell 110458 (SI). A variable species with its highest diversity in N Argentina. <strong>Luzula</strong> castellanosii seems <strong>to</strong> be a depauperate, narrow-leaved form of L. excelsa. 34. <strong>Luzula</strong> mendocina Barros, Darwiniana 10: 322 (1953) T: Argentina, Mendoza, Tunuyán, Cerro de las Piedras, 2220 m, 23 Mar 1935, A.Ruíz Leal 3105; lec<strong>to</strong>: LIL46294A, designated here; isolec<strong>to</strong>: LIL46294B. Illustration: M.Barros, Darwiniana 10: 323, fig. 12 (1953). Perennials 25–60 cm tall, sparsely hairy caespi<strong>to</strong>se; rhizome short; s<strong>to</strong>lons absent. Basal leaves usually 12–15 cm long, 3.5–<strong>6.</strong>5 mm wide. Cauline leaves 2–3; upper ones usually short, 3–6 cm long, 2.5–3.5 mm wide. All leaves acute-subulate; margins with sparse reddish papillae. Primary bracts herbaceous, of variable length, usually 2.5–5.0 cm long. Inflorescence panicle composed of remotely interrupted, relatively dense, long pedunculate secondary panicles. Secondary panicles 2–4 × 1–2 cm, with lowermost often 10–15 cm below terminal one, of 3–10 spike-like dense clusters. Bracteoles scarious-membranous, 1–2 mm long, ±lanceolate, not or sparsely ciliate. Tepals subequal, entire, glabrous, lanceolate, acuminate; inner tepals 2.0–2.5 mm long; outer tepals 2.1–2.8 mm long. Stamens 6, rarely 1 or 2 rudimentary; anthers 0.6–0.8 mm long; filaments 0.3–0.4 mm long; style 0.3–0.4 mm long; stigmas 0.8–1.1 mm long. Capsules narrowly ovoid, ±acute, brown, shining, shorter than perianth; capsule segments 1.5–1.7 × 1.0–1.1 mm. Seeds oblong-ovoid, c. 0.8–1.0 mm long, 0.6–0.7 mm wide; appendage indistinct, base fibrillate. Central Argentina (Mendoza, Cordoba, San Luis and Buenos Aires provinces). 85: AGE, AGW. Mountain grasslands, 700-3000 m. Map 64. 85. ARGENTINA NORTHEAST: Buenos Aires, Sierra de la Ventana, <strong>Part</strong>ido de Tornquist, Cerro de la Nerilana, 24 Mar 1948, A.L.Cabrera 54 (SI). ARGENTINA NORTHWEST: Mendoza, Tunuyán, Cuchilla del Cerro Bayo, 3000 m, A.Ruíz Leal 3085 (para: LIL); Tunuyán, Rincón Colorado, 3000 m, A.Ruíz Leal 1279 (para: LIL46292A, B); Tunuyán, Las Cuevas, A.Ruíz Leal 3195 (LIL); Tunuyán, Bella Vista, 2300 m, G.Covas (SI18003); San Luís, La Carolina, A.Burkart 10777 (SI); Córdoba, Pampa de Achala, 13–14 Dec 1945, A.T.Hunziker 6425 (CORD). Distinct in having several, long pedunculate, ±dense secondary panicles ('heads'); it is unique in this respect among hexandrous taxa. 35. <strong>Luzula</strong> masafuerana Skottsb., Nat. Hist. Juan Fernandez 2: 775 (1953) <strong>Luzula</strong> racemosa subsp. insularis Skottsb., in C.J.F.Skottsberg, Nat. Hist. Juan Fernandez 2: 110 (1922); <strong>Luzula</strong> insularis (Skottsb.) Skottsb., Veröff. Geobot. Inst. Rübel Zürich 3: 89 (1925), nom. illeg., non (Briq.) Prain (1921). T: Juan Fernández, Masafuera, Las Torres, 1100–1350 m, C.J.F.Skottsberg & I.Skottsberg 408; lec<strong>to</strong>: S, designated here; isolec<strong>to</strong>: BM, K, LD, UPS. Illustration: C.J.F.Skottsberg, in C.J.F.Skottsberg, Nat. Hist. Juan Fernandez. 2: 110, fig. 5, b-e (1922). Perennials up <strong>to</strong> 35–40 cm tall, robust, densely hairy caespi<strong>to</strong>se; rhizome short; s<strong>to</strong>lons absent. Basal leaves usually 4–7 cm long, 4–9 mm wide, flat; cauline leaves 2 (–3), usually (3–) 5–7 cm long and 3.5–5.0 mm wide; all leaves acute, with papillose-serrulate margins. Lower bracts herbaceous, usually 2.5–<strong>6.</strong>0 cm long, exceeding inflorescence. Inflorescence erect <strong>to</strong> slightly bent, congested, compact, lobulate, or subdivided in 2–3 ovoid clusters and ±elongated, 2.0–3.5 (–4.0) cm long. Bracteoles ±ovate, membranous, 1.0–1.5 mm long, densely fimbriate-ciliate. Tepals ±equal, lanceolate, distinctly acuminate, 2.2–3.0 mm long, ±brown, ±glabrous <strong>to</strong> very sparsely ciliate. Stamens 3; anthers 0.3–0.6 mm long; filaments 0.5–0.6 mm long; style c. 0.3 mm long; stigmas 1.0–1.2 mm long. Capsule ±ovoid, subacute, castaneous brown; capsule segments 1.7–2.0 × c. 1.3 mm. Seeds ellipsoidal, brown, 1.0–1.1 mm long, 0.6–0.7 mm wide; appendage absent; base fibrillate. Endemic <strong>to</strong> the Juan Fernández Is. 85: JNF. Found on rocks and rocky slopes. Map 65. 85. JUAN FERNÁNDEZ IS.: Masafuera, N slope of Quebrada Casas, 900 m, 17 Jan 1986, T.Stuessy et al. 9048 (OS); Quebrada de las Casas, ladera mirando al Sur Riscos, Muñoz & E.Sierra 7400 (OS); Masafuera, Quebrata Pas<strong>to</strong>, 1060–1100 m, 29 Jan 1986, T.Stuessy 9411 & T.Lammas (OS); Masafuera, Las Torres, 73
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