There's always something new. Beside a trail I've followed umpteen times, a clump of moss now supports lichens I've not seen before. At first, down there in the shade, they looked like black, rotting leaves. But when I hunkered down to look more closely, I saw their orangey "buttons" and those white "roots".
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A pelt lichen, Peltigera membranacea. |
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They can be brown or greenish or blue-black, darker when they're wet. |
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And here are the "roots". |
Ok. Time to fix the vocabulary. Buttons and leaves and roots just won't do. The "leaves" are foliose (leafy) thalli, appressed (flat against the substrate), and described as "embossed" or blistered. The orange structures are the fruiting bodies, the apothecia. And the whitish underside of the thalli have raised tomentose veins and protruding rhizines (the "roots"). These don't absorb or transport water or nutrients, but simply hold the thallus down to the substrate, in this case the moss. The lichen gets its nutrients from the air and rain. Tomentose? Hairy, but you need a lens to see that.
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Siempre hay algo nuevo. Donde he caminado muchas veces, ahora encontré un montoncito de musgos con un liquen que nunca había visto antes. A primera vista, en la penumbra, parecía unas hojas podridas, negras. Pero cuando me arrodillé para ver mejor, vi los "botones" anaranjados y esas "raices" blancas.
- Peltigera membranacea. En E-Flora BC, los llaman Piel Diamante, no sé porque.
- Pueden ser de color marrón oliváceo, o verde, o azul oscuro. Cuando están húmedos, el color es más fuerte.
- Y estas son las "raices".
Sometimes, I wish Latin was still taught more widely...
ReplyDeleteThanks for all your interesting observations.