Indicator values (Landolt 1977)
F	Moisture	R	Reaction
1	indicator of extreme dryness, not competitive on wet soils	1	indicator of extrem acidity, hardly found on neutral or basic soils (pH 3-4,5)
2	dry-site indicator, generally not competitive on damp soils	2	acidity indicator, on acid soils (pH 3,5-5,5)
3	plant on moderately dry to moderately damp soils, with a wide ecological range	3	indicator of moderately acid soils (pH 4,5-7,5)
4	dampness indicator, avoiding dry soils	4	plant with center of distribution on basic soils (pH 5,5-8)
5	Wet-site indicator, on water-saturated soils, avoiding damp and dry soils	5	indicator of basic reaction, avoiding acid soils (pH >6,5)
w	plant on soils with changing moisture; F indicates an average moisture
u	submerged plant, permanently or almost constantly under water
v	plant with submerged and swimming organs
s	plant with swimming leaves or leave organs
i	plant rooting under water, but with most of the leaves exposed above
N	Nitrogen	H	Humus
1	indicator of extremely infertile sites	1	indicator of bare soil (soils with no humus cover)
2	indicator of more or less infertile sites	2	indicator of mineral soils, plant on soils with small humus cover
3	indicator of sites of intermediate fertility	3	plant on soils with intermediate humus cover, mostly mull
4	plant often found in richly fertile places	4	indicator of humus, plant rooting partly in mineral soil
5	indicator of extremely rich situations; indicator of over-fertilized soils	5	indicator of raw humus or bog, plant rooting particularly in humus
D	Dispersity	S	Salt
1	plant on rocks, blocks or walls	1	plant on salt soils, salt-tolerant species
2	species on rubble, gravel or soils with a high amount of skeleton	2	species avoiding salt soils
3	plant on well-drained soils rich in skeleton
4	plant on soils poor in skeleton
5	often indicator of clay or peat-soil or generally indicating lack of oxygen
x	plant on both rocks and clay/peat-soil
L	Light	T	Temperature
1	plant growing in shade, even less than 3 % relative illumination	1	typical alpine and arctic plant, cold-indicator at lower altitudes
2	shade plant, often below 10 % relative illumination)	2	mountain and boreal plant
3	Semi-shade plant, rarely in full light, but generally with more than 10 % relative illumination	3	center of distribution in montane zones, plant with wide range
4	light indicator, but also occurring in partial shade	4	center of distribution at low altitudes of central Europe
5	plant in full light, found mostly in full sun	5	indicator of warmest places, center of distribution in South Europe
K	Continentality	W	Life forms
1	center of distribution in regions with oceanic climate: mild winter, high humidity	p	deciduous phanerophyte
2	center of distribution in regions with sub-atlantic climate: late frosts, plant not enduring extreme temperatures	i	evergreen phanerophyte
3	widely distributed, avoiding extremely continental regions	n	deciduous nano-phanerophyte
4	center of distribution in regions with continental climate	j	evergreen nano-phanerophyte
5	exclusively distributed in regions with continental climate, enduring extreme temperature ranges	z	woody chamaephyte
		c	herbaceous chamaephyte
		e	epiphyte
		h	hemicryptophyte
		g	geophyte
		t	therophyte
		u	therophyte/hemicryptophyte
		a	hydrophyte