The Thymus Information Page |
Key to the Thymus of North Africa, Ethiopia and the Canary Islands Translated from : Morales Valverde, R.(1994). El género Thymus
en África. Anales Jardin Botanico de Madrid, 51(2): 205-236.
1 Leaves in general revolute, although some can be flat...........................2 Leaves flat.....................................................................8 2 Leaves glabrous, although with marginal cilia...................................3 Leaves hairy....................................................................4 3 Inflorescence in vertillasters, calyx more than 6mm............4 T. bleicherianus Inflorescence generally capituliform, calyx less than 5mm......8 T. algeriensis 4 Inflorescence lax, generally espiciform, although sometimes with vertillasters closely packed in the apex...........................5 Inflorescence capituliform......................................................7 5 Calyx more than 5mm............................................3 T. munbyanus Calyx up to 5mm.................................................................6 6 Leaves with scattered spherical glands, calyx 4-5mm, upper teeth of the calyx generally ciliate, corolla more than 6mm..................................7 T. willdenowii Leaves with dense pointed glands, calyx 3.5-4.5mm, upper teeth of calyx not ciliate, corolla less than 6mm..........................................6 T. zygis 7 Leaves glabrous on the upper surface, with conspicuous spheroidal glands, bracts less than 6mm, with long hairs.............................................5 T. hyemalis Leaves hairy on both sides with inconspicuous speroidal glands, bracts more than 7mm,with short hairs..................3 T. munbyanus 8 Leaves hairy..................................................10 T. maroccanus Leaves glabrous or ciliate at the base only.....................................9 9 Leaves without basal cilia.....................................................10 Leaves with basal cilia........................................................11 10 Bracts wider than the leaves, infloresence elongate, corolla white.........................................15 T. guyonii Bracts equal in width to the leaves, infloresence capituliform, corolla coloured........................16 T. origanoides 11 Leaves serrated...............................................17 T. serrulatus Leaves entire..................................................................12 12 Calyx more than 6mm............................................................13 Calyx less than 6mm............................................................14 13 Bracts similar to leaves, corolla whitish, a little longer than the calyx........................13 T. pallescens Bracts different from the leaves, corolla coloured, clearly longer than the calyx..........................9 T. broussonetii 14 Leaves espathulate, generally less than 2mm wide...............................15 Leaves lanceolate to ± eliptical, generally more than 2mm wide.................16 15 Plant generally upright, bracteoles up to 10mm, corolla coloured.......................................1 T. saturejoides Plant spreading, bracteoles up to 3mm, corolla white...........2 T. riatarum 16 Plant generally upright, leaves lanceolate.....................................17 Plant spreading, leaves eliptical to ovate.....................................18 17 Bracts different from the leaves, infloresence capituliform, upper teeth of calyx ciliate.........................12 T. numidicus Bracts similar to the leaves, infloresence in vertillasters, upper teeth of calyx without cilia....................11 T. lanceolatus 18 Calyx up to 4.5mm, bracts somewhat different from the leaves.......................................14 T. dreatensis Calyx more than 4.5mm, bracts similar to the leaves...........18 T. schimperi Key translated by Graham Walters and Mikel Pagola, Royal
Botanic Gardens, Kew, 1997 |