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Table 4 List of the 100 species used in step 3. Species numbered 1 to 29 corresponded to the preliminary list of species used in steps 1 and 2. Species 1–29 and species 30–100 were ordered by decreasing frequency in plots where the species is present with a high cover according to NFI data

From: Identification and spatial extent of understory plant species requiring vegetation control to ensure tree regeneration in French forests

Species name

Species number

Species name

Species number

Species name

Species number

Rubus fruticosus aggr.

1

Deschampsia flexuosa (L.) Trin.

34

Quercus robur L.

68

Hedera helix L.

2

Lonicera periclymenum L.

35

Oxalis acetosella L.

69

Molinia caerulea (L.) Moench

3

Vaccinium myrtillus L.

36

Deschampsia cespitosa (L.) P. Beauv.

70

Pteridium aquilinum (L.) Kuhn

4

Juniperus communis L.

37

Galium odoratum (L.) Scop.

71

Buxus sempervirens L.

5

Carpinus betulus L.

38

Prunus padus L.

72

Pseudoscleropodium purum (Hedw.) M. Fleisch

6

Ruscus aculeatus L.

39

Cytisus oromediterraneus Rivas Mart., T. E. Díaz, Fern. Prieto, Loidi & Penas

73

Carex flacca Schreb.

7

Festuca ovina L.

41

Carex acutiformis Ehrh.

74

Brachypodium pinnatum (L.) P. Beauv.

8

Pseudarrhenatherum longifolium (Thore) Rouy

42

Carex pendula Huds.

75

Anemone nemorosa L.

9

Arbutus unedo L.

43

Vinca minor L.

76

Corylus avellana L.

10

Ulex europaeus L.

44

Rubus caesius L.

77

Carex brizoides L.

11

Ilex aquifolium L.

45

Asphodelus albus Mill.

78

Castanea sativa Mill.

12

Brachypodium sylvaticum (Huds.) P. Beauv.

46

Holcus mollis L.

79

Cornus sanguinea L.

13

Carex arenaria L.

47

Salix cinerea L.

80

Fagus sylvatica L.

14

Carex remota L.

48

Pinus pinaster Aiton

81

Calluna vulgaris (L.) Hull

15

Carex riparia Curtis

49

Mercurialis perennis L.

82

Prunus spinosa L.

16

Dactylis sp.

50

Smilax aspera L.

83

Rubia peregrina L.

17

Fraxinus excelsior L.

51

Glechoma hederacea L.

84

Rhytidiadelphus triquetrus (Hedw.) Warnst.

18

Phragmites australis (Cav.) Trin. ex Steud.

52

Sorbus torminalis (L.) Crantz

85

Urtica dioica L.

19

Salix atrocinerea Brot.

53

Acer pseudoplatanus L.

86

Cytisus scoparius (L.) Link

20

Ulmus minor Mill.

54

Plagiomnium undulatum (Hedw.) T. J. Kop.

87

Crataegus monogyna Jacq.

21

Abies alba Mill.

55

Teucrium scorodonia L.

88

Pseudotsuga menziesii (Mirb.) Franco

22

Bromus erectus Huds.

56

Picea abies (L.) H. Karst.

89

Hylocomium splendens (Hedw.) Schimp.

23

Eurhynchium striatum (Hedw.) Schimp.

57

Rubus idaeus L.

90

Quercus ilex L.

24

Ranunculus ficaria L.

58

Acer monspessulanum L.

91

Thuidium tamariscinum (Hedw.) Schimp.

25

Sambucus nigra L.

59

Eurhynchium sp.

92

Quercus pubescens Willd.

26

Hyacinthoides non-scripta (L.) Chouard ex Rothm.

60

Dioscorea communis (L.) Caddick & Wilkin

93

Erica arborea L.

27

Festuca altissima All.

61

Clematis vitalba L.

94

Lamium galeobdolon (L.) L.

28

Rhytidiadelphus loreus (Hedw.) Warnst.

62

Impatiens glandulifera Royle

95

Quercus coccifera L.

29

Erica scoparia L.

63

Calamagrostis epigejos (L.) Roth

96

Betula pendula Roth

30

Luzula sylvatica (Huds.) Gaudin

64

Rhododendron ferrugineum L.

97

Populus tremula L.

31

Teucrium chamaedrys L.

65

Alnus alnobetula (Ehrh.) K. Koch

98

Quercus petraea (Matt.) Liebl.

32

Ribes rubrum L.

66

Robinia pseudoacacia L.

99

Ligustrum vulgare L.

33

Pleurozium schreberi (Willd. ex Brid.) Mitt.

67

Carex pilosa Scop.

100