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Flowering plants

Leaf size and climatic instability in a cloud forest avocado

26 November, 201725 May, 2018 / ramirezbarahona / Leave a comment

Pleistocene glacial periods have had a major influence on the genetic variation and differentiation of plant populations in tropical mountains. However, the effect of these cycles on morphological differentiation remains virtually unexplored.

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Climatic niche and population genetic structure of mistletoes

12 January, 201725 May, 2018 / ramirezbarahona / Leave a comment

The prevalent view about genetic structuring in parasitic plants is that host-race formation is due to varying degrees of host specificity. However, the relative importance of ecological niche divergence and host specificity remains poorly understood.

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Loxosceles cf. mixteca (Scicariidae). Last night I had a close encounter with this adult male recluse spider (the body no more than 15 mm long). While brushing my teeth I found it crawling on my neck. Of course I panicked, but was able to pick the spider up and take a picture to identify it, looking for two things: 1) the 'violin-shaped' mark on top the cephalothorax and 2) the unmistakable three pairs of eyes forming a triangle (two lateral pairs and one frontal pair). I'm pretty sure it did not bite (17 hrs with no symptoms, which include inflammation, redness and pain in the bite zone, accompanied by fever, chills and nausea)...... but my hypochondria and the persistent flu do not help. #arachnophobia
Pseudomussaenda flava (Rubiaceae) #botanizando #botanizing
59. Bouvardia fernifolia (Rubiaceae) #botanizando #botanizing

Categories

  • Climate change (2)
  • Cloud forests (2)
  • Diversification (1)
  • Flowering plants (2)
  • Mistletoes (2)
  • Population genetics (1)
  • Tree ferns (4)

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