Dictionary » P » Perennial



(Science: botany) Lasting through the year of for several years.

Origin: L. Perennis, from per = through, annus = year A plant lasting for three seasons or more.Lasting three seasons or more; the common buttercup is a popular perennial plant.Lasting an indefinitely long time; suggesting self-renewal; perennial happiness.Plants that live from year to year, ranging from trees to dandelions.

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C3 and C4 plants

... the normal photosynthesis cicle (krebs)-C4 do it easier. you'll never see a C3 Plant growing up on the pavement but you can see some annual or perennial grasses everywhere (i have seen them on some celigins here in my country haha)

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by Cristgonz
Mon Jun 23, 2008 3:49 pm
Forum: Botany Discussion
Topic: C3 and C4 plants
Replies: 38
Views: 364729

Re: roots

thanks What is the life expectancy of roots? Well it depends on the species of grass, Some perennial Grass can live for very long-years I just planted some Miscanthus and expect to have it for at least 5+ years and many more if its happy:)

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by Linn
Wed Oct 18, 2006 2:45 am
Forum: Botany Discussion
Topic: Grass plant roots!
Replies: 3
Views: 1938

how do herbs sow seed after their kind?

they may also reproduce asexually if they are perennial. More stems arrise from the same root.

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by MrMistery
Thu Aug 31, 2006 5:49 pm
Forum: Botany Discussion
Topic: how do herbs sow seed after their kind?
Replies: 6
Views: 2929

The Fiber Disease

... ulcers and 80% of gastric ulcers. Approximately two-thirds of the world’s population is infected with these microbes."... ..."One perennial complaint about the so-called cancer microbe is that is pleomorphic. For some reason, the idea that a proposed cancer germ could have more ...

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by Skytroll
Sat May 20, 2006 3:17 am
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 6242815

Seed Plants

Angiosperms are annual, biennial, or perennial. Annual should be obvious: they go from seed to death in the course of a year. Biennial angiosperms will grow for a year or so and then flower and die in the second year. Perrenials persist for ...

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by AstusAleator
Thu May 04, 2006 7:10 am
Forum: Botany Discussion
Topic: Seed Plants
Replies: 9
Views: 7005
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