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

JUNCACEAE (Luzula)
85. ARGENTINA NORTHWEST: Mendoza, Malarhue, Valle de Las Leñas, R.Kiesling & A.Donath 7262,
25 Dec 1989 (SI, MCNS). ARGENTINA SOUTH: Neuquén, Cordillera del Viento, Cerro las Yeguas,
A.Pastore 46 (S); Chubut, Lago Vintter, 1360–1450 m, S.Halloy A-93 (LIL); Santa Cruz, Río de las Vueltas,
Estancia Pérez, 1200 m, H.Sleumer 1382 (LIL); Santa Cruz, Lago Argentino, 400 m, P.Dusén 5777 (S, SI, UPS).
CHILE CENTRAL: Valparaíso, Petorca, Río Sobrante, 3100–3300 m, J.L.Morrison 17310 (S, SI); La
Araucania, Cautín, Volcán Llaima, 1200–1300 m, E.Werdermann 1232 (LIL, S, SI); Valparaíso, Aconcagua,
Portillo, 3000 m, E.Wall 1727 (S). CHILE SOUTH: Ñuble, Baños de Chillán, 2100 m, F.W.Pennel 12442
(S, SGO); Libertador, Cordillera del Peuco, 1886, R.A.Philippi (SGO).
The obvious type of the name L. chilensis was destroyed in B but details were depicted and
described by F.G.P.Buchenau, Junc. S.-Amer. 418 (1879). The seed size, 6 stamens, and
inflorescence shape clearly identify L. chilensis. The type of L. rigida does not bear
Philippi's annotation of the name but the detailed description (with a number of measurements
and individual features) allows identification of the type and its equation with
L. chilensis.
39. Luzula leiboldii Buchenau, Junc. S.-Amer. 418 (1880)
Juncoides leiboldii (Buchenau) Kuntze, Revis. Gen. Pl. 2: 734 (1891). T: Chile, F.E.Leibold 2969; holo: W,
not located; iso: S.
Illustration: M.Barros, Darwiniana 10: 326, fig. 13 (1953).
Perennials 12–30 cm tall, densely caespitose, hairy; base thick, with extravaginal erect
shoots; stolons absent. Basal leaves usually 5–10 cm long, 3.5–5.0 mm wide; cauline leaves
1 or 2, 3.5–6.0 cm long, 2.0–3.0 mm wide; all leaves acute, rarely subobtuse, with margins
±smooth to sparsely papillose, sparsely ciliate. Lower and middle bracts castaneousmembranous,
with prominent veins, aristate, ciliate, up to 1.5 cm long; upper bracts c. 5 mm,
similar to tepals. Inflorescence erect to suberect, rarely slightly nodding, usually interrupted
at base, ‘echinate’ with erecto-patent acute bracts, usually 1.5–2.0 (–3.0) cm long, usually of
3–7 few-flowered clusters subtended by conspicuous middle bracts. Bracteoles acuminate,
membranous, 2.5–3.0 mm long. Tepals glabrous to sparsely ciliate, pale to castaneous brown
at base, membranous-scarious above, acuminate-aristate, ±unequal; outer tepals 3.5–4.8 mm
long; inner tepals 2.7–3.7 mm long. Stamens 6; anthers (0.7–) 0.8–1.2 (–1.5) mm long;
filaments 0.4–0.6 mm long; style 0.5–0.6 mm long; stigmas 1.5–2.0 mm long. Capsule ovoid,
subacute, deep castaneous, shorter than perianth; capsule segments 2.4–2.9 mm long. Seeds
[unripe] 1.5–1.7 mm long, c. 1 mm wide; appendage indistinct, c. 0.1 mm long, fibrillate.
Recorded from Santiago province, Chile, and Mendoza and Neuquén, Argentina. 85: AGS,
AGW, CLN. Habitat unknown. Map 69.
85. ARGENTINA NORTHWEST: Mendoza, Calmucó, A.Burkart et al. 13849 (SI13849). ARGENTINA
SOUTH: Neuquén, Lacar, Cordón del Cerro Colorado (Between Lago Lacar and Lago Lolog), 25 Jan 1986,
L.Bernardello & Moscone 620 (CORD). CHILE NORTH: Santiago, Rio Yeso, Lago Negro, 2700 m,
W.Biese 937 (LIL); ‘Cordillera de Santiago’, R.A.Philippi (SGO, BM); Santiago, Cerro de Ramón, 2650 m,
C.Ysandino (SGO).
Closely related to L. chilensis, and perhaps only an infraspecific taxon of it. Luzula leiboldii
is distinct in having longer tepals, longer anthers with higher anther/filament ratio, and tepals
sometimes hairy. The material available is too scanty for evaluation of variation ranges.
40. Luzula racemosa Desv., J. Bot. (Desvaux) 1: 162, tab. 6, fig. 3 (1808)
Juncoides racemosa (Desv.) Kuntze, Revis. Gen. Pl. 2: 734 (1891). T: ‘in America calidiore’; lecto: P,
designated here [left hand specimen, the rest is a fragment of a Luzula of another section].
Luzula spicata var. interrupta E.Mey., Linnaea 22: 415. 1849, non Luzula interrupta Desv. T: Mexico,
Palyas de Jorullo, A.Humboldt; syn: n.v.; Mexico, Toluca, A.Humboldt; syn: n.v.; Mexico, Mt Orizaba,
H.G.Galeotti; syn: n.v.; C.Schiede; syn: n.v.
Luzula humilis Buchenau, Abh. Naturwiss. Vereine Bremen 4: 125 (1874); Luzula racemosa f. humilis
(Buchenau) Buchenau, Bot. Jahrb. Syst. 12: 133 (1890); Luzula racemosa var. humilis (Buchenau) T.C.E.Fr., Nova
Acta Regiae Soc. Sci. Upsal., ser. 4, 1: 167 (1905). T: Bolivia, La Paz, Larecaja, near Sorata, 3700–4200 m,
G.Mandon 1448; lecto: GOET, fide H.Balslev, Fl. Neotrop. Monogr. 68: 67 (1996); isolecto: GH, P, S.
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