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

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SPECIES PLANTARUM — FLORA OF THE WORLD (2002)
1 Stamens 3 74. L. leptophylla
1: Stamens 6
2 Most flowers in an inflorescence borne singly, some in few-flowered
spike-like clusters 102. L. hawaiiensis
2: Most flowers in pedunculate clusters, or inflorescence wholly congested
3 Plants in dense compact cushions
4 Flowering stems abbreviated, hidden in leaf rosettes, not elongating
as fruits mature; seeds broadly ovoid, 0.7–0.9 mm wide 79. L. colensoi
4: Flowering stems at least slightly overtopping leaves, elongation
during fruit ripening; seeds ±ellipsoid, 0.5–0.6 mm wide
5 Leaves inserted (imbricate) along proximal 2/3– 3/4 of stem,
0.4–0.7 mm wide; inflorescence 1–5-flowered 76. L. crenulata
5: Leaves mostly basal to subbasal, 0.7–1.3 mm wide; inflorescence
4–10 (–20)-flowered 78. L. pumila
3: Plants caespitose to loosely caespitose, with or without creeping
rhizomes, sometimes forming mats but never dense compact cushions
6 Capsule top or upper part mostly densely papillose
7 Densely caespitose; rhizome short or oblique-ascending; stolons absent
8 Seed appendage 0.4–0.6 mm
9 Tepals with margins indistinct or absent 83. L. meridionalis
9: Tepals with distinct broad whitish-scarious margins 84. L. flaccida
8: Seed appendage 0.3 mm or less
10 Leaf margin usually smooth, rarely sparsely papillose-serrulate
10: Leaf margin densely to sparsely papillose-serrulate
88. L. novae-cambriae
11 Basal leaves usually 4–7 (–10) mm wide
11: Basal leaves up to 3.5 mm wide
86. L. australasica
12 Seeds 0.5–0.6 mm wide; appendage c. 0.1 mm long 90. L. alpestris
12: Seeds c. 0.8 mm wide; appendage 0.2–0.3 mm long 93. L. poimena
7: Loosely caespitose; rhizomatous plants with stolons
13 Style abbreviated, to 0.2 mm long; inflorescence a single dark
head 0.7–1.0 cm in diam.
13: Style 0.3–0.5 mm long; inflorescence composed of (1–) 2–4 (–5)
subsessile subcylindrical clusters each 5–12-flowered and c. 6–9 mm
long; proximal cluster often ±remote; other clusters approximated,
92. L. atrata
forming elongated lobulate head 1–2 (–3) cm long 89. L. modesta
6: Capsule smooth in most flowers, rarely with sparse papillae
14 Peduncles ±densely papillose in the middle part (under
magnification of at least 80×)
15 Tepals ±equal; seeds 0.7–0.8 mm wide; clusters variable, often
less than 10-flowered
16 Clusters (5–) 6–11 (–13), usually 8–11-flowered; peduncles
frequently with secondary branches; style 0.3–0.4 mm long
16: Clusters 3–5 (–7), usually 3–7-flowered; peduncles without
59. L. multiflora
secondary branches; style 0.7–1.0 mm long 53. L. fallax
15: Outer tepals conspicuously longer; seeds 0.5–0.6 mm wide;
clusters usually more than 10-flowered 50. L. pallescens