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Earth Sciences and Geography x Plant Sciences and Forestry x clear all

Angiospermae

Overview page. Subjects: Plant Sciences and Forestry — Earth Sciences and Geography.

Formerly, one of the 2 divisions of the Spermatophyta (seed plants), the other being the Gymnospermae. The term is now used only informally. (See angiosperm.)

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Anthrosols

Overview page. Subjects: Earth Sciences and Geography — Plant Sciences and Forestry.

Soils that have been strongly affected by human activities such as ploughing, irrigation, or the addition of manure. Anthrosols are a reference soil group in the FAO soil classification.

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Archaeocalamites radiatus

Overview page. Subjects: Earth Sciences and Geography — Plant Sciences and Forestry.

First described by A. Brongniart in 1828, this species is one of the earliest recorded equisetaleans or ‘horse-tails’, a group of plants noted for the jointed nature of the stem. At each...

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Archaeopteris

Overview page. Subjects: Plant Sciences and Forestry — Earth Sciences and Geography.

Early progymnosperm found first in the Frasnian stage of the Devonian Period. It was identified by its fronds, and is the earliest known representative of the Archaeopteridales.

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Atherstone, William Guybon

Alan Cohen.

in Oxford Dictionary of National Biography

September 2004; p ublished online September 2004 .

Reference Entry. Subjects: Geology and the Lithosphere; Botany; Medicine and Health. 1351 words.

Atherstone, William Guybon (1814–1898), medical practitioner, botanist, and geologist, was born on 27 May 1814 at Zion Hill, Nottingham, the eldest of eight children of John Atherstone...

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Baragwanathia longifolia

Overview page. Subjects: Earth Sciences and Geography — Plant Sciences and Forestry.

An early representative of the club mosses (Lycopsida) that is known from the Lower Devonian. During the Devonian and Carboniferous, this group reached the peak of its diversification.

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Bartram, John

Frank N. Egerton.

in Oxford Dictionary of National Biography

September 2004; p ublished online September 2004 .

Reference Entry. Subjects: Maps and Map-making; History of the Americas; Botany. 1368 words.

Bartram, John (1699–1777), botanist and explorer in America, was born on 23 May 1699 on a farm at Marple, Pennsylvania, near Darby, the elder of two sons of William Bartram (d. 1711),...

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Bathonian

Overview page. Subjects: Plant Sciences and Forestry — Earth Sciences and Geography.

A Middle Jurassic stage, about 167.7–164.7 Ma ago, commonly represented by carbonate sediments in many areas of Europe. It is known to contain an abundant fauna of invertebrates.

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Bennettitales

Overview page. Subjects: Plant Sciences and Forestry — Earth Sciences and Geography.

Extinct gymnosperm order ranging from the Triassic into the Cretaceous. They resembled cycads, and possessed reproductive structures which must have looked more like flowers than cones.

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Benson, Margaret Jane

Mary R. S. Creese.

in Oxford Dictionary of National Biography

September 2004; p ublished online September 2004 .

Reference Entry. Subjects: Palaeontology; Botany. 860 words.

Benson, Margaret Jane (1859–1936), botanist and palaeontologist, was born on 20 October 1859 in London, the sixth of the nine children of William Benson, architect and civil engineer, and...

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