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

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92 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
JUNCACEAE (Luzula) 14: Peduncles smooth in the middle part 17 Flower clusters loose at base and/or some flowers ±remote 18 Capsule segments 1.9–2.1 mm long; seeds 0.6–0.7 mm wide [S Italy] 52. L. calabra 18: Capsule segments longer than 2.3 mm, seeds usually wider than 0.7 mm [NW and C America] 19 Style 0.6–1.2 mm long; seeds 0.9–1.1 mm wide 98. L. subsessilis 19: Style up to 0.6 mm long; seeds 0.7–0.9 mm wide 20 Tepals dark to blackish brown, 2.0–2.8 mm long 103. L. caricina 20: Tepals pale straw-brown to pale brown, (2.5–) 3.0–4.0 mm long 99. L. comosa 17: Flower clusters (evenly) dense, without remote flowers 21 Seed appendage usually 0.5 mm or more 22 Inflorescence wholly congested, or sometimes some of the clusters on erect peduncles 23 Anther/filament length ratio c. 1.0; basal leaves usually 3.5–6.0 mm wide 58. L. congesta 23: Anther/filament length ratio c. 2.0; basal leaves usually 2.0–3.5 mm wide 68. L. capitata 22: Inflorescence of pedunculate clusters; if partly congested then some of the peduncles flexuose or recurved and nodding 24 Plants with long creeping rhizomes and frequent ascending stolons 56. L. campestris 24: Plants densely to loosely caespitose; rhizomes short or shortascending; stolons absent 25 Rhizome short-ascending, short-noded, usually with a few pale swollen reduced leaves; flower clusters cylindric to ±ovoid 101. L. bulbosa 25: Rhizome short, vertical, without swollen reduced leaves; flower clusters broadly ovoid to hemispherical 26 Capsule distinctly exceeding perianth 71. L. lutescens 26: Capsule shorter than perianth 27 Seeds 0.9–1.0 mm wide; anthers usually longer than 2.0 mm [C and SC Europe] 55. L. divulgata 27: Seeds 0.6–0.8 mm wide; anthers up to 1.5 mm long [E North America] 100. L. echinata 21: Seed appendage usually 0.4 mm or less (very rarely to 0.5 mm) 28 Leaf margins ±smooth, without dense papillose serrulation, rarely with solitary, often reddish papillae 29 Leaf tip acute to subobtuse with an acute mucro 91. L. acutifolia 29: Leaf tip obtuse, often ±swollen 30 Rhizome creeping-ascending, branched, plants therefore very loosely caespitose; stolons present or absent 31 Stem reduced, to 2 cm long; inflorescence usually 2–10flowered 80. L. decipiens 31: Stem longer than (10–) 15 cm; inflorescence usually many-flowered 93
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AUSTRALIAN BIOLOGICAL RESOURCES STU
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CONTENTS Contributors iv Species Pl
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Species Plantarum Steering Committe
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PREFACE This volume is the first of
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2 SPECIES PLANTARUM — FLORA OF TH
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Part 6. JUNCACEAE 1: Rostkovia to Luzula - Species Plantarum ...

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