Flora of Great Britain and Ireland: Volume 5, Butomaceae - Orchidaceae
Planned in five volumes, this new, critical Flora provides a definitive account of the native species, naturalized species, frequent garden escapes and casuals found in the British Isles. Full keys and descriptions should enable the botanist, researcher or informed amateur to name all plants occurring in the wild, plus some ornamental trees and shrubs. Detailed accounts of all the large apomictic genera are given and many infraspecific variants. Each species entry begins with the accepted Latin name, synonyms and the common English name. A detailed description follows, with separate descriptions being given for infraspecific taxa. Includes information on status, ecology and distribution. Clear black and white line drawings illustrate an extensive glossary and also illuminate the diagnostic features of a number of groups of plants.
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3-veined absent acuminate at apex acute at apex Annual herb anthers auct basal base beak bisexual bracts branches Britain British Isles broadly brown Capsule carpels Caryopsis central Culms cylindrical dark diameter ellipsoid elliptical erect Europe female glumes filaments flat Flowers 6–7 Fruits glabrous Glabrous perennial herb glumes hairs hyaline hybrid Inflorescence Inflorescence a panicle keeled labellum lamina lanceolate leaf lemma lemma and palea less ligules linear lobes long-linear loose Macaronesia margins membranous midrib minutely rough narrow narrowly Native naturalised nodes North America oblong obtuse at apex Orchis Outer perianth segments Ovary ovate ovoid palea panicle pedicels Perianth tube petiole plants pointed at apex pollinia purple purplish raceme rarely reddish-brown rhachis rhizomes scabrid Seeds sessile sheaths short shorter slender slightly smooth sometimes Spathe species Spikelets spreading Stamens Stems sterile stigmas stolons Submerged leaves subsp tapering terete trigonous tufted perennial herb unequal usually Utricles whitish yellow