Author Topic: [Theme] pattern - show your subtle structures of order (Read 103678 times)

Jyda · « **Reply #75 on:** December 22, 2015, 10:04:36 »

Order and some chaos in nature.

Anirban Halder · « **Reply #76 on:** December 22, 2015, 13:32:40 »

Quote from: Bjørn Rørslett on December 22, 2015, 09:19:10

That "1 m high Equisetum" might be E. telmateia (see below). Easily recognised by its bright stem, puffed-up node sheaths, and the prolific occurrence of thin non-branched leaves. It prefers fertile soils usually not very damp.

Beautiful! Is this Coastal She-Oak (Casuarina equisetifolia, I googled..) or same family? I'm referring to Bjørn's photo in Reply #73.

Anirban Halder · « **Reply #77 on:** December 22, 2015, 13:38:15 »

Banana leaf.

Bjørn Rørslett · « **Reply #78 on:** December 22, 2015, 14:46:03 »

Quote from: Anirban Halder on December 22, 2015, 13:32:40

Beautiful! Is this Coastal She-Oak (Casuarina equisetifolia, I googled..) or same family? I'm referring to Bjørn's photo in Reply #73.

Nope. This is the largest European Horsetail species and not a tree at all. (no recent Equisetum is a tree). They are the survivors of the forests way back in the Paleozoic era, back to Carbon if not even earlier. So we're talking many hundreds of million years old organisms here.

Anirban Halder · « **Reply #79 on:** December 22, 2015, 14:54:37 »

Thanks for the detailed information, Bjørn.

rosko · « **Reply #80 on:** December 22, 2015, 15:30:47 »

Quote from: Bjørn Rørslett on December 22, 2015, 00:22:37

Just a small correction. Your plant definitively is not E. palustris, but E. fluvatile. A plant of very wet meadows, slow flowing rivers and lake margins, able to growing to about 1.5 m depth under optimal conditions. It is a very common species at least in northern Europe.

Thanks Bjørn for the correction made. I confused them due to their similarities.

I just learned that the number of ''teeth'' of each sheath is determinant. Less in E. fluvatile.

According to a scientific french website both species could also hybridizing.

Do you think both species could settle on the same habitat ?