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Dictionary » P » Pinus

Pinus

pinus

(Science: botany) A large genus of evergreen coniferous trees, mostly found in the northern hemisphere. The genus formerly included the firs, spruces, larches, and hemlocks, but is now limited to those trees which have the primary leaves of the branchlets reduced to mere scales, and the secondary ones (pine needles) acicular, and usually in fascicles of two to seven. See Pine.

Origin: L, a pine tree.


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Transport In Plants

... (ref. Esau's Plant Anatomy, 3rd ed. 2006, Chap.14) also (ALFIERI, F. J., and R. F. EVERT. 1968. Seasonal development of the secondary phloem in Pinus. Am. J. Bot. 55, 518-528.) It consists of sieve cells , sieve tube elements , phloem parenchyma and phloem fibres. There are also phloem ray cells. ...

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by kika
Tue Aug 02, 2011 10:40 am
 
Forum: Botany Discussion
Topic: Transport In Plants
Replies: 3
Views: 9520

HELP!

Think carbon metabolized into wood then make the wood Pinus strobus. Then thinly slice said wood, varnish and apply to my floor.

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by Endangered
Fri Jan 01, 2010 2:02 am
 
Forum: Botany Discussion
Topic: HELP!
Replies: 7
Views: 2594

HELP!

... reproduction, etc., but I still need some professional opinions on my topic. Here's my prompt: "Explain where the mass for 50 year old Pinus Strobus (Eastern White Pine) would come from, considering it was once a naked seed laying on the forest floor. Be sure to formulate a succinct ...

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by darwindescendant
Wed Dec 30, 2009 3:43 am
 
Forum: Botany Discussion
Topic: HELP!
Replies: 7
Views: 2594

Difference between the top and the bottom of leafs

depends on the leaf... Pinus sp. leaves have no top and bottom :lol:

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by MrMistery
Wed Feb 21, 2007 10:06 pm
 
Forum: Botany Discussion
Topic: Difference between the top and the bottom of leafs
Replies: 3
Views: 2206

Cellulose, and something else

... those in germany, you know). by the way, the oldest plant in the world is a gimnosperm from what i know, about 5000 years old, from the species Pinus longivea or something like that...

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by MrMistery
Thu Nov 09, 2006 7:23 pm
 
Forum: Botany Discussion
Topic: Cellulose, and something else
Replies: 2
Views: 1437
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