Part 6. JUNCACEAE 1: Rostkovia to Luzula - Species Plantarum ...

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SPECIES PLANTARUM — FLORA OF THE WORLD (2002)
1.0–1.2 mm, finely rugose. Seeds ellipsoidal, paler brown, 0.9–1.0 mm long, 0.5–0.6 mm
wide; appendage c. 0.1 mm long, fibrillate. Fig. 18.
C Mexico and from Colombia to Bolivia. 79: MXC, MXG. 83: BOL, CLM, ECU, PER.
Grasslands and dry open slopes in high altitudes. Map 72.
79. MEXICO CENTRAL: Mexico, SW of Mt Ixtaccihuatl, 3850 m, J.H.Beaman 3527 (US). MEXICO
GULF: Veracruz, Cofre de Perote, 4000 m, J.Dorantes 338 (F). 83. BOLIVIA: La Paz, Murillo, La Cumbre,
4600 m, E.Asplund 4380 (UPS); Huayna Potosí, Lago Zongo, 4700 m, H.Balslev & S.G.Beck 1148A (AAU,
LPB, NY). ECUADOR: Imbambura, Volcán Cayambe, 4100 m, P.C.D.Cazalet & T.D.Pennington 5723 (K,
NY, US); Cotopaxi, Laguna Salayambo Cocha, 3800–4050 m, B.Øllgaard & H.Balslev 9891 (AAU); Azuay,
road between Soldados and Angas, 3850 m, H.Balslev 1525 (AAU). PERU: Puno, Huancane, Occo Pampa,
3125 m, R.S.Shepard 62 (GH, NY).
43. Luzula antarctica Hook.f., Fl. Antarct. 1: 359 (1847)
Juncoides antarctica (Hook.f.) Macloskie, Rep. Princeton Univ. Exp. Patagonia, Bot. 8: 302 (1904). T: Chile,
Cape Horn, Hermite Is., J.D.Hooker 14; holo: K.
Perennials 7–13 cm tall, densely caespitose, densely to sparsely hairy; rhizome short,
vertical; stolons absent, plant base greyish straw-brown. Upper part of stem 0.3–0.4 mm in
diam., arcuate. Basal leaves usually 3–5 cm long, ±flat to canaliculate, c. 2.0–3.0 (–3.5) mm
wide, acute; margins subglabrous to densely ciliate, smooth or very remotely papillose.
Cauline leaves (1–) 2, 1.5–3.5 cm long, c. 1.5 mm wide, acute. Lower bract (or uppermost
leaf) usually slightly remote from inflorescence, brownish-membranous (or ±herbaceous),
hairy, narrow, less than 2 cm long; upper bracts narrowly triangular to lanceolate or ovatelanceolate,
dark castaneous brown, paler above, c. 0.7–1.0 cm long. Inflorescence small,
1.0–1.5 × 0.7–0.9 cm, nodding, compact, dark castaneous brown, few-flowered. Bracteoles
±lanceolate to narrowly triangular, castaneous brown to membranous-brownish, paler near
apex, usually 2.5–4.0 mm long. Tepals unequal; inner tepals 2.8–3.4 mm long; outer tepals
3.8–4.7 mm long, lacerate ciliate, dark castaneous brown (including bases of ciliae),
lanceolate, acuminate, aristate (with a filiform tip). Stamens (0–2) 3; anthers 0.3–0.6 mm
long; filaments 0.7–0.8 mm long; style c. 0.2 mm long; stigmas 1.0–1.2 mm long; gynoecium
in some flowers rudimentary, but in most there are rudiments of 1 (–2) stamens. Capsule
dark brown, ovoid to subglobular, subobtuse, shorter than perianth; capsule segments usually
2.0–2.3 × 1.1–1.2 mm. Seeds ellipsoidal, brown; seed-coat not distinct, 1.0–1.1 mm long,
0.6–0.7 mm wide; appendage yellowish, 0.10–0.15 mm long, fibrillate.
Tierra del Fuego and adjacent territories, rare. 85: AGS, CLS. Exposed rocky slopes,
grasslands. Map 73.
85. SOUTH ARGENTINA: Tierra del Fuego, Cerro Almanza, Lashifashaj, 900–1000 m, D.M.Moore 1415 (H, K);
Ushuaia, H.Roivainen 2321 (H). CHILE SOUTH: Tierra del Fuego, Río Azopardo, 600 m, 9 Mar 1896,
P.Dusén 652 (UPS); 3 Mar 1908, C.J.F.Skottsberg 849 (S); Isla Desolación, Puerto Angusto, 300–400 m,
8 Apr 1896, P.Dusén 709 (UPS); Sierra Valdiviesa, Río Betbedero, 11 Mar 1908, C.J.F.Skottsberg s.n.
(SGO, UPS).
Usually compared or synonymized with L. alopecurus on the basis of shared irrelevant
characters [see D.M.Moore & M.C.Doggett, Bol. Soc. Argent. Bot. 17: 150–154 (1976)], but
closer to the L. racemosa group. Distinct from the former in having three stamens and dark,
nodding inflorescence, from the latter it can be distingushed by the compact inflorescence
and much longer tepals.
44. Luzula ruiz-lealii Barros, Darwiniana 10: 346 (1953)
T: Argentina, Mendoza, Tunuyán, Valle del Alto Tunuyán, 16 Feb 1934, A.Ruíz Leal 2140; holo: LIL46295.
Luzula parvula Barros, Darwiniana 10: 356 (1953). T: Argentina, Mendoza, San Carlos, Laguna del
Diamante, 3300 m, 16 Jan 1949, A.Ruíz Leal 11717; holo: LIL.
Illustrations: M.Barros, Darwiniana 10: 343, fig. 19 & 357, fig. 25 (1953).
Perennials to 15 cm tall, dwarf, densely caespitose, cushion-forming, subglabrous to sparsely
hairy; rhizome ±erect, ±many-headed; stolons absent, with base covered with numerous
brownish remains of leaf bases. Basal leaves rigid, glabrescent or ciliate, thick, canaliculate,