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Puccinellia Lucida
''Puccinellia lucida'' is a perennial grass which grows in south-eastern Canada and occasionally elsewhere in the United States. Its specific epithet ''lucida'' means "shining", referring to the plant's lustrous glumes. Description ''Puccinellia lucida'' is a green, loosely cespitose grass growing tall. It has cauline leaves with flaccid, involute blades. Its basal leaf sheaths can be somewhat purple. Its acute ligule is long. Its diffuse panicle is long, with filiform, scabrous floral branches. Its pale green spikelets are long and bear three to five flowers. Its glumes are thin and lustrous; the first glume is long, hyaline above, and minutely serrulate, and its second glume is long. Its lemmas are long, broadly ovate, acute, and are pubescent especially towards their base where hairs become longer. The grass flowers from July into August. ''Puccinellia lucida'' is most similar to the species ''Puccinellia laurentiana'', '' Puccinellia airoides'', and '' Puccinellia mac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glume
In botany, a glume is a bract (leaf-like structure) below a spikelet in the inflorescence (flower cluster) of grasses (Poaceae) or the flowers of sedges (Cyperaceae). There are two other types of bracts in the spikelets of grasses: the lemma and palea. In grasses, two bracts known as "glumes" form the lowermost organs of a spikelet (there are usually two but one is sometimes reduced; or rarely, both are absent). Glumes may be similar in form to the lemmas, the bracts at the base of each floret This glossary of botanical terms is a list of definitions of terms and concepts relevant to botany and plants in general. Terms of plant morphology are included here as well as at the more specific Glossary of plant morphology and Glossary o .... In sedges, by contrast, a glume is a scale at the base of each flower in a spikelet. References {{reflist Plant morphology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ligule
A ligule (from "strap", variant of ''lingula'', from ''lingua'' "tongue") is a thin outgrowth at the junction of leaf and leafstalk of many grasses (Poaceae) and sedges. A ligule is also a strap-shaped extension of the corolla, such as that of a ray floret in plants in the daisy family Asteraceae. Poaceae and Cyperaceae The ligule is part of the leaf that is found at the junction of the blade and sheath of the leaf. It may take several forms, but it is commonly some form of translucent membrane or a fringe of hairs. The membranous ligule can be very short 1–2 mm (Kentucky bluegrass, ''Poa pratensis'') to very long 10–20 mm (Johnson grass, ''Sorghum halepense''), it can also be smooth on the edge or very ragged. Some grasses do not have a ligule, for example barnyardgrass (''Echinochloa crus-galli''). A ligule can also be defined as a membrane-like tissue or row of delicate hairs typically found in grasses at the junction of the leaf sheath and blade. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spikelet
A spikelet, in botany, describes the typical arrangement of the flowers of grasses, sedges and some other Monocots. Each spikelet has one or more florets. The spikelets are further grouped into panicles or spikes. The part of the spikelet that bears the florets is called the rachilla. In grasses In Poaceae, the grass family, a spikelet consists of two (or sometimes fewer) bracts at the base, called glumes, followed by one or more florets. A floret consists of the flower surrounded by two bracts, one external—the lemma—and one internal—the palea. The perianth is reduced to two scales, called lodicules, that expand and contract to spread the lemma and palea; these are generally interpreted to be modified sepals. The flowers are usually hermaphroditic—maize being an important exception—and mainly anemophilous or wind-pollinated, although insects occasionally play a role. Lemma Lemma is a phytomorphological term referring to a part of the spikelet. It is the lowermost ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lemma (botany)
A spikelet, in botany, describes the typical arrangement of the flowers of grasses, sedges and some other Monocots. Each spikelet has one or more florets. The spikelets are further grouped into panicles or spikes. The part of the spikelet that bears the florets is called the rachilla. In grasses In Poaceae, the grass family, a spikelet consists of two (or sometimes fewer) bracts at the base, called glumes, followed by one or more florets. A floret consists of the flower surrounded by two bracts, one external—the lemma—and one internal—the palea. The perianth is reduced to two scales, called lodicules, that expand and contract to spread the lemma and palea; these are generally interpreted to be modified sepals. The flowers are usually hermaphroditic—maize being an important exception—and mainly anemophilous or wind-pollinated, although insects occasionally play a role. Lemma Lemma is a phytomorphological term referring to a part of the spikelet. It is the lowermost ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puccinellia Laurentiana
''Puccinellia laurentiana'' is a perennial grass which grows on gravelly seashores in south-eastern Canada. Its specific epithet "''laurentiana''" refers to the Gulf of St. Lawrence, where it grows. Description ''Puccinellia laurentiana'' has solitary or somewhat tufted culms growing high. Its leaves are cauline with involute blades long. Basal leaf sheaths can be somewhat white. Its ligules are long and somewhat acute. Its panicle is long, with stiff and nearly glabrous floral branches. The branches are ascending. Its whitish spikelets are long with three to five flowers. The acute glume In botany, a glume is a bract (leaf-like structure) below a spikelet in the inflorescence (flower cluster) of grasses (Poaceae) or the flowers of sedges (Cyperaceae). There are two other types of bracts in the spikelets of grasses: the lemma and ...s are erose to serrulate; the first glume is long, narrowly ovate and acutish, with one nerve, and the second is long, broadly ovate and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puccinellia Airoides
''Puccinellia'' is a genus of plants in the grass family, known as alkali grass or salt grass. These grasses grow in wet environments, often in saline or alkaline conditions. They are native to temperate to Arctic regions of the Northern and Southern Hemispheres. Selected species ''Puccinellia deschampsioides'' '' Puccinellia macra'' - Wright's alkali grass :List sources : References External linksJepson Manual Treatment {{Taxonbar, from=Q157774 Poaceae genera [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puccinellia Macra
''Puccinellia macra'' is a perennial grass which grows on the coasts of south-eastern Canada. Its specific epithet "''macra''" means large, referring to its tall stature. Description ''Puccinellia macra'' is cespitose and grows tall. It has cauline leaves with thin, flat blades wide and long, with upper leaves typically longer than lower leaves. Its basal sheaths are somewhat purple. Its linear to cylindrical panicle is long, with appressed and very scabrous floral branches. Its purplish spikelets are long and bear four to six flowers. The first glume is long, hyaline, acute, and has one nerve, and its second glume is long, narrowly ovate, obtuse, and has three nerves. The oblanceolate palea is long and ciliate on its nerves, with lower cilia longer. The grass flowers in August. ''P. macra'' is somewhat unique morphologically in its genus, resembling ''Puccinellia nutkaensis'' but differing in its softer and more pubescent lemmas. Habitat and distribution ''Puccinelli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puccinellia
''Puccinellia'' is a genus of plants in the grass family, known as alkali grass or salt grass. These grasses grow in wet environments, often in saline or alkaline conditions. They are native to temperate to Arctic regions of the Northern and Southern Hemispheres. Selected species '' Puccinellia deschampsioides'' '' Puccinellia macra'' - Wright's alkali grass :List sources : References External linksJepson Manual Treatment {{Taxonbar, from=Q157774 Poaceae genera [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
