Definitions for Pinaceae
pinaceae

Princeton's WordNetRate this definition:0.0 / 0 votes

1. Pinaceae, family Pinaceae, pine familynoun

   a family of Pinaceae

ChatGPTRate this definition:0.0 / 0 votes

1. pinaceae

   Pinaceae is a family of coniferous trees and shrubs, including pines, spruces, firs, hemlocks, larches, and others, that are characterized by solitary needlelike leaves and cones. This family is of significant ecological and economical importance as some species are major sources of timber, pulpwood, and Christmas trees. Fossil records indicate that Pinaceae originated in the late Cretaceous period. They are native to the Northern Hemisphere and are particularly abundant in mountainous and high latitude regions.

WikidataRate this definition:0.0 / 0 votes

1. Pinaceae

   Pinaceae are trees or shrubs, including many of the well-known conifers of commercial importance such as cedars, firs, hemlocks, larches, pines and spruces. The family is included in the order Pinales, formerly known as Coniferales. Pinaceae are supported as monophyletic by its protein-type sieve cell plastids, pattern of proembryogeny, and lack of bioflavonoids. They are the largest extant conifer family in species diversity, with between 220-250 species in 11 genera, and the second-largest in geographical range, found in most of the Northern Hemisphere with the majority of the species in temperate climates but ranging from sub arctic to tropical. The family often forms the dominant component of boreal, coastal and montane forests. One species just crosses the equator in southeast Asia. Major centres of diversity are found in the mountains of southwest China, Mexico, central Japan and California. They are trees growing from 2 to 100 m tall, mostly evergreen, resinous, monoecious, with subopposite or whorled branches, and spirally arranged, linear leaves. The female cones are large and usually woody, 2-60 cm long, with numerous spirally arranged scales, and two winged seeds on each scale. The male cones are small, 0.5-6 cm long, and fall soon after pollination; pollen dispersal is by wind. Seed dispersal is mostly by wind, but some species have large seeds with reduced wings, and are dispersed by birds. Analysis of Pinaceae cones reveals how selective pressure has shaped the evolution of variable cone size and function throughout the family. Variation in cone size in the family has likely resulted from the variation of seed dispersal mechanisms available in the environment over time. All Pinaceae with seeds weighing less than 90mg, are seemingly adapted for wind dispersal. Pines having seeds larger than 100mg are more likely to have benefited from adaptations that promote animal dispersal, particularly by birds. Pinaceae that persist in areas where tree squirrels are abundant do not seem to have evolved adaptations for bird dispersal. The embryos of Pinaceae are multi-cotyledonous, with 3-24 cotyledons.

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Pinaceae

   A plant family of the order Pinales, class Pinopsida, division Coniferophyta, known for the various conifers.

Matched Categories

1. • Gymnosperm Family

How to pronounce Pinaceae?

1. Alex

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   Mark

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   Daniel

   British

   Libby

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   Mia

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   Australian

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How to say Pinaceae in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of Pinaceae in Chaldean Numerology is: 2

2. Pythagorean Numerology

   The numerical value of Pinaceae in Pythagorean Numerology is: 9

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References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=Pinaceae
2. ^ ChatGPT
   https://chat.openai.com
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=Pinaceae