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Eucalyptus

Eucalyptus

(Science: botany) a myrtaceous genus of trees, mostly Australian. Many of them grow to an immense height, one or two species exceeding the height even of the California Sequoia.

They have rigid, entire leaves with one edge turned toward the zenith. most of them secrete resinous gums, whence they called gum trees, and their timber is of great value. Eucalyptus Globulus is the blue gum; E. Aigantea, the stringy bark: E. Amygdalina, the peppermint tree. E. Gunnii, the tasmanian cider tree, yields a refreshing drink from wounds made in the bark in the spring. Center species yield oils, tars, acids, dyes and tans. It is said that miasmatic valleys in algeria and Portugal, and a part of the unhealthy roman Campagna, have been made more salubrious by planting groves of these trees.

Origin: NL, from gr. Well, good _ covered. The buds of eucalyptus have a hemispherical or conical covering, which falls off at anthesis.


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Re: Camouflage in nature

... variations within the bug population cannot lead to adaptations to the new environment, the bugs will die out. A bug that looks very much like a eucalyptus leaf will not do well in a savannah. But savannahs have leaves too. Perhaps variations in the bug population could lead to even longer or ...

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by Gavin
Fri Nov 11, 2011 9:36 pm
 
Forum: Evolution
Topic: Camouflage in nature
Replies: 16
Views: 12678

Re: Camouflage in nature

... complexity, but still with a 1-dimensional goal to achieve. Back to the camouflage… 1) If I ask you to make a detailed description of ALL the eucalyptus leaf characteristics, it will result in quite a list. So we already have a multi-dimensional problem, which, unlike the sun, will be in motion, ...

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by Nick7
Fri Nov 11, 2011 5:32 am
 
Forum: Evolution
Topic: Camouflage in nature
Replies: 16
Views: 12678

Camouflage in nature

... picture (color, shape, texture, or behavior) in its early stage of development, doesn’t seem to really serve the purpose of pretending to be an eucalyptus leaf. Unlike in the eye example, I don’t see a gradual enhancement of an immediately useful feature, but rather an application of a set of ...

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by Nick7
Fri Nov 11, 2011 12:02 am
 
Forum: Evolution
Topic: Camouflage in nature
Replies: 16
Views: 12678

Re: Stomach bloating and weight gain

... on your noodles will keep your stomach bloated. Not sure about Claritin - many drugs also have salicylates - asprin being the worst. Even inhaling eucalyptus can strike a blow. As it's fairly new, beware of 'old' information - best to keep with the updated foodlists. This website is wonderful: ...

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by aussiej
Sun Sep 05, 2010 3:07 am
 
Forum: Physiology
Topic: Stomach bloating and weight gain
Replies: 453
Views: 2703317

Ferns and their life cycle

... evolved in relatives of club moss, and some extinct species stoode 40 meters (130 feet) high. Among modern seed plants, Sequoia (a gymnosperm and Eucalyptus (an angiosperm) can be more than 100 meters (330 feet) high. Explain why evolution of vascular tissues and lignin would have allowed such ...

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by MissAshley
Mon Nov 30, 2009 7:18 pm
 
Forum: Botany Discussion
Topic: Ferns and their life cycle
Replies: 7
Views: 8280
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