|
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] |
Panicle
A panicle is a much-branched inflorescence. (softcover ). Some authors distinguish it from a compound spike inflorescence, by requiring that the flowers (and fruit) be pedicellate (having a single stem per flower). The branches of a panicle are often racemes. A panicle may have determinate or indeterminate growth. This type of inflorescence is largely characteristic of grasses such as oat and crabgrass, as well as other plants such as pistachio and mamoncillo. Botanists use the term paniculate in two ways: "having a true panicle inflorescence" as well as "having an inflorescence with the form but not necessarily the structure of a panicle". Corymb A corymb may have a paniculate branching structure, with the lower flowers having longer pedicels than the upper, thus giving a flattish top superficially resembling an umbel. Many species in the subfamily Amygdaloideae, such as hawthorns and rowans, produce their flowers in corymbs. up'' Sorbus glabrescens'' corymb with fruit See ... [...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] |
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] |
Palea (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 Nutkaensis
''Puccinellia nutkaensis'' is a species of Poaceae, grass known by the common names Nootka alkaligrass and Alaska alkali grass. It is native to North America from Alaska across northern Canada to Greenland and Nova Scotia, and down to Washington (state), Washington to Oregon to the Central Coast of California. Description ''Puccinellia nutkaensis'' is a perennial bunchgrass which is quite variable in appearance, taking a petite, clumpy form or growing erect to 90 centimeters in height with robust inflorescences.Grass Manual Treatment It sometimes roots at stem nodes that become buried in moist substrate, and forms dense stands. A species of leafhopper, ''Macrosteles fascifrons'', is associated with this grass in Alaska, remaining on the grass even when it is submerged amid icebergs. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gaspé, Quebec
Gaspé is a city at the tip of the Gaspé Peninsula in the Gaspésie–Îles-de-la-Madeleine region of eastern Quebec in Canada. Gaspé is located about northeast of Quebec City, and east of Rimouski. As of the 2021 Canadian Census, the city had a total population of 15,063. Gaspé is where Jacques Cartier took possession of New France (now part of Canada) in the name of François I of France on July 24, 1534. Etymology The most common assumption is that "Gaspé" may come from the Miꞌkmaq word ''Gespeg'' which means "Land's end". However, other theories hold that the name may be a mutation of the Basque word ''geizpe'' or ''kerizpe'' which means "shelter" or "place of refuge". Another theory is that it is named after Portuguese explorer Gaspar Corte-Real, who explored the Labrador in 1500. In 1600, Englishman Richard Hakluyt used the name ''Gaspay'' in his translation of ''Cosmosgraphie'' by Jean Alfonse, which became the common spelling in the early 17th century. Thereafte ... [...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] |
