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Key A: lycophytes and pteridophytes
Key A1: pteridophytes reduced to thalloid or filamentous, free-living gametophytes
Key A2: pteridophytes and lycophytes growing as floating or rooted aquatics
Key A3: lycophytes and pteridophytes with leaves not ‘fern-like’ (unlobed, variously awl-shaped, scale-like, or terete)
Key A4: small ‘fern-like’ pteridophytes, epipetric or epiphytic, growing on rock, tree bark, or walls
Key A5: small ‘fern-like’ pteridophytes, terrestrial, growing in soil, not associated with rock outcrops
Key A6: medium to large ‘fern-like’ pteridophytes, epipetric on rock or walls, or epiphytic on tree trunks
Key A7: medium to large ‘fern-like’ pteridophytes, terrestrial, growing in soil, not associated with rock outcrops
Key B: gymnosperms
Key B1: cycads
Key B3: gymnosperm trees and shrubs with scale or needle leaves
Key C: aquatics
Key C1: floating aquatics
Key C2: rooted aquatics with basal leaves, compound or divided
Key C3: rooted aquatics with basal and simple, broad leaves
Key C4: rooted aquatics with basal and simple, linear leaves
Key C5: rooted aquatics with cauline leaves, compound or divided
Key C6: rooted aquatics with simple, cauline, alternate leaves
Key C7: rooted aquatics with simple, cauline, opposite or whorled leaves
Key E: angiosperm shrubs and subshrubs with basally-disposed leaves
Key F: woody angiosperms with alternate, compound leaves
Key F1: Key to Plantae
Key F2: Leaves with 4-many leaflets (poorly developed leaves in some species with only 3 leaflets, but usually leaves elsewhere on the plant with 4 or 5+).
Key F3: Key to Plantae
Key F4: Key to Plantae
Key F5: Key to Plantae
Key G: woody plants with alternate, simple leaves
Key G1: woody plants with alternate, simple, pinnately lobed leaves
Key G2: woody plants with alternate, simple, palmately lobed leaves
Key G3: lianas with alternate, simple, and unlobed leaves
Key G4: shrubs and subshrubs with alternate, simple, unlobed, entire leaves
Key G5: shrubs and subshrubs with alternate, simple, unlobed, toothed leaves
Key G6: trees with alternate, simple, unlobed, entire leaves
Key G7: trees with alternate, simple, unlobed, toothed leaves
Key H: woody plants with whorled leaves
Key I: woody plants with opposite, compound leaves
Key J: woody plants with opposite, simple leaves
Key J1: woody plants with opposite, simple, palmately or pinnately lobed leaves
Key J2: woody angiosperms with opposite, simple leaves with toothed margins {add [Abelia] CAPRIFOLIACEAE}
Key J3: lianas with opposite simple leaves with entire margins {add Paederia in RUBIACEAE}
Key J4: shrubs and subshrubs with opposite simple leaves with entire margins
Key J5: trees with opposite simple leaves with entire margins
Key K: holoparasites and holomycotrophs
Key L: epiphytic angiosperms {Note that epiphytic Pteridophytes are not re-keyed here; seek them in Keys A4 and A6}
Key M: monocots {Note that strictly aquatic monocots are not additionally keyed here; seek them in Key C. Some amphibious monocots are keyed both here and in Key C}
Key M1: monocots with linear, scale, or narrow leaves (or grasses)
Key M2: monocots with broad leaves
Key N: herbaceous dicots with mainly basal leaves
Key N1: herbaceous dicots with mainly basal, compound leaves
Key N2: herbaceous dicots with mainly basal, simple leaves
Key O: herbaceous dicots with alternate, compound leaves on the stem
Key P: herbaceous dicots with alternate, simple leaves on the stem
Key P1: herbaceous dicots with alternate, simple, and unlobed leaves on the stem
Key P2: herbaceous dicots with alternate, simple, and palmately lobed leaves on the stem
Key P3: herbaceous dicots with alternate, simple, and pinnately lobed leaves on the stem
Key Q: herbaceous dicots with whorled leaves on the stem {add [Platycodon] CAMPANULACEAE}
Key R: herbaceous dicots with opposite, compound leaves on the stem
Key S: herbaceous dicots with opposite, simple leaves on the stem
Key S1: herbaceous dicots with opposite, simple, and unlobed leaves on the stem
Key S2: herbaceous dicots with opposite, simple, and palmately lobed leaves on the stem {add [Humulus] CANNABINACEAE}
Key S3: herbaceous dicots with opposite, simple, and pinnately lobed leaves on the stem
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62 keys found. Start a new search Searched: taxon id