Dictionary definition: Pteropsida

Article: A new species of Dryopteris (Dryopteridaceae: Pteropsida) ...
Kew Bulletin;  January 1, 2002 ;     700+ words ...Summary. Dryopteris tricellularis (Dryopteridaceae) a new species from East Africa, is described and illustrated. INTRODUCTION The following new species has come to light during the preparation of a review of the genus in sub-Saharan Africa, and the Flora of Tropical East Africa project. Dryopteris

Dictionary definition: ferns
A Dictionary of Earth Sciences;      223 words ...ferns See PTEROPSIDA .

Dictionary definition: Pteridophytina
A Dictionary of Earth Sciences;      429 words ... ... comprising the classes Lycopsida (club mosses), Sphenopsida (horsetails), Psilopsida (but see PSILOPHYTALES ), and Pteropsida (the various families of ferns). They first enter the fossil record in the Silurian . They are flowerless plants exhibiting ...

Dictionary definition: Filicopsida
A Dictionary of Earth Sciences;      227 words ...Filicopsida See PTEROPSIDA .

Article: Jeffrey, Edward Charles
Complete Dictionary of Scientific Biography;      700+ words ... ... comparative or evolutionary morphology is his reclassification of vascular plants as a whole in 1899 into the Lycopsida and the Pteropsida; this change from the classical system won worldwide acceptance and, with little alteration, has withstood the test of ...

Article: Practice nursing in rural Australia.
Contemporary Nurse;  August 1, 2007 ;     700+ words ... ... there are many classifications which define 'rural', 'remote' and 'regional'. For example, one of the older classifications is the RRMA Classification (Rural, Remote and Metropolitan Areas Classification 1991 Census Edition) (Department ...

Article: A consensus classification for the order Gentianales with ...
The Botanical Review;  October 1, 1994 ;     700+ words ... ... chemical) currently available. They are therefore a synthesis of information on a grand scale. However, older classifications should not be ignored on this account, and, although not forming part of the consensus, they are also briefly ...