typical vegetation of the "bosque tropical caducifolia" with column cacti at the beginning of the rainy season at the location of P. colimensis
7.5.2005
location of P. colimensis:
north facing gypsum cliffs with several flowering plants (435 m a.s.l.)
N 19°03'69''; W 103°46'89''
7.5.2005
habitat of P. colimensis:
most of the vegetation is still "dormant" at the beginning of May; maximum daily temperatures at this time of the year are higher than 30 °C and cliffs are bone dry
7.5.2005
winter rosette with emerging flowers growing directly on gypsum rock
7.5.2005
winter rosette with old dry summer leaves from the previous year
7.5.2005
flowering plants growing together with an Agave species and Selaginella lepidophylla (only the old dry leaves are visible)
7.5.2005
face view of a flower with overlapping petals
7.5.2005
lateral view of a flower and an unripened seed capsule (the spur of the flower can reach a length of up to 4 cm)
7.5.2005
face view of a flower where the petals don't overlap
7.5.2005