Search Screens: Descriptions of Characteristics
Ecological Flora of the British Isles

Search Screens: Descriptions of Characteristics

PLANTATT Description
Data from PLANTATT: full documentation here
7.01 Conservation Status vu Vulnerable
    ew extinct in the wild
    en Endangered
    cr Critically endangered
    ex Extinct
    null Alien taxa
7.02 Rarity Status n Present, not rare or scarce
    s Scarce, 16-100 km squares in Britain 1987-1999
    r Rare, 1-15 10km squares in Britain 1987-1999
    o ABsent from Britain and the Isle of Man as a native, but present in the channel Islands and/ or Ireland
    x Apparently extinct ( not recorded since 1986)
  i Insufficient data available to assess rarity
  null Alien taxa
7.03 Change Index (- 4.57) - (+4.7) (Telfer et al 2002) Measures the relative magnitude of change comparing the periods 1930-1960 with 1987-1999
7.04 Biome 0 Mediterranean (native range of some aliens)
1 Arctic Montane ( main distribution in tundra or above treeline in temperate mountains
2 Boreo-Arctic Montane (in tundra and coniferous forest zones)
3 Wide Boreal ( from temperate zone to tundra)
4 Boreal montane (main distribution in coniferous forest zone)
5 Boreo-Temperate (in conifer and broadleaf zones)
6 Wide Temperate (from Mediterranean region to coniferous forest zone)
7 Temperate (in broadleaf forest zone)
8 Southern Temperate (in Mediterranean Region and Broadleaf forest zones)
9 Mediterranean-Atlantic( in Mediterranean region and extending north in Atlantic zone of temperate Europe
7.05 Eastern Limit 0 Hyperoceanic : with a western distribution in the Atlantic Zone
1 Oceanic : in Atlantic zone of Europe, not or scarcely reaching east to Sweden, Germany or South Spain
2 Suboceanic : extending to Sweden, Central Europe or Italy
3 European :extending to more continental parts of Europe but not to Siberia
4 Euro-Siberian : eastern limit between 60 and 120 E
5 Eurasian: extending across Asia to east of 120E
6 Circumpolar : in Europe, Asia and North America
7.06 Continentality in Europe c Continental: rare in the Atlantic zone but commoner further east
7.07 Northern Limit in Britain Yes Native taxa at their northern European limit in the Br. Isles
    No Native taxa not at their northern European limit in the Br. Isles
7.08 Northern European Limit (Lat, 5º band)    
7.09 Southern European Limit   Native taxa at their southern European limit in the Br. Isles
7.10 Southern European Limit (Lat, 5º band)    
7.11 January mean temperature   Calculated from New Atlas plus climatic data
7.12 July mean temperature   Calculated from New Atlas plus climatic data
7.13 Annual precipitation   Calculated from New Atlas plus climatic data
7.14 Ellenberg Indicator: Light   Hill et al. (1999)
7.15 Ellenberg Indicator: Moisture   Hill et al. (1999)
7.16 Ellenberg Indicator: pH   Hill et al. (1999)
7.17 Ellenberg Indicator: Nitrogen   Hill et al. (1999)
7.18 Ellenberg Indicator: Salt   Hill et al. (1999)
7.19 Life Form L1 L1: the normal state.
7.20 Life Form L2 L2 :the less frequent state
Ch chamaephyte
  Gb Bulbous geophyte
  Gn Non-bulbous geophyte
Hc Hemicryptophyte
Hy Perennial hydrophyte
Hz Annual hydrophyte (aquatic therophyte)
Ph Mega- meso- and micro- phanerophyte
Pn Nanophanerophyte
Th Therophyte
7.21 Clonality C1 C1: the normal state.
7.22 Clonality C2 C2:the less frequent state.
Clonality 0 Little or no vegetative spread
  0gr Tussock forming graminoid, may slowly spread
  0tb Tuberous or bulbous slowly cloning by offsets
  Dra Detaching ramets above ground, often axillary
  Drg Detaching ramets at or below ground
  Dri Detaching ramets on inflorescence
  Drl Detaching ramets on leaves (Hammarbya)
  Drp Detaching ramets on prothallus (Trichomanes)
  Frag Fragmenting as part of normal growth
  Irreg Irregularly fragmenting (mainly water plants)
  Leaf Plantlets forming on leaves (Cardamine pratensis)
  Node1 Shortly creeping and rooting at nodes
  Node2 Extensively creeping and rooting at nodes
  Rhiz1 Rhizome shortly creeping
  Rhiz2 Rhizome far creeping
  Root Clones formed by suckering from roots
  Stol1 Shortly creeping stolons in illuminated medium
  Stol2 Far creeping stolons in illuminated medium
  Tip Tip rooting (stems often turn downwards)