jointed खोखले उपजी के साथ parendial rushlessless जड़ी बूटियों और rhizomes रेंगने से फैले हुए दांतों की तरह पत्तियां; वेकी बन जाते हैं; उत्तरी गोलार्ध में आम; अफ्रीका और दक्षिण अमेरिका में कुछ

Noun:

घोड़े की पूंछ,

horsetails's Usage Examples:

Taking first this most northerly locality, in Grinnell Land, we find the flora to comprise 2 horsetails, i i Conifers (including the living Pinus Abies), 2 grasses, a sedge, 2 poplars, a willow, 2 birches, 2 hazels, an elm, a Viburnum, a water-lily, and a lime.

The horsetails are remarkable for the large quantity of silica they contain in the cuticle (hence their value in polishing), which often amounts to half the weight of the ash yielded by burning them; the roots contain a quantity of starch.

Vascular Cryptogams still include one or two large horsetails with stems over an inch thick, and also 37 species of Fern, amongst the most interesting of which are 5 species belonging to the climbing Lygodium, a genus now living in Java.

Equisetites columnaris, a common fossil in the Jurassic plant-beds of the Yorkshire coast, represents another type with relatively stout and occasionally branched vegetative shoots, bearing leaf-sheaths very like those of Equisetum maximum and other Horsetails.

4), some large Equisetaceous stems apparently identical, except in size, with modern Horsetails.

In addition to the three classes, Equisetales, Lycopodiales and Filicales, under which recent Pteridophytes naturally group themselves, a fourth class, Sphenophyllales, existed in Palaeozoic times, clearly related to the Horsetails and more remotely to the Ferns and perhaps the Club-mosses, but with peculiarities of its own demanding an independent position.

The Ferns form the great majority of existing Pteridophytes; the importance and interest of the other groups, of which the Club-mosses and Horsetails are the most familiar examples, depend largely on the fact that they are the surviving representatives of large families of plants which flourished in earlier geological periods.

The stamens of Araucaria and Agathis are peculiar in bearing several long and narrow free pollen-sacs; these may be compared with the sporangiophores of the horsetails (Equisetum); in Taxus (yew) the filament is attached to the centre of a large circular distal expansion, which bears several pollen-sacs on its under surface.

Our modern diminutive " horsetails " with scaly leaves were represented in the Carboniferous period by gigantic calamites, often with a diameter of I to 2 ft.

The plants showing it are not all forest trees, hut include also some Pteridophytes and some of the prothallia of the Ferns, Club-mosses, Liverworts and Horsetails.

horsetails's Meaning':

perennial rushlike flowerless herbs with jointed hollow stems and narrow toothlike leaves that spread by creeping rhizomes; tend to become weedy; common in northern hemisphere; some in Africa and South America

Synonyms:

strobilus, rough horsetail, Equisetum fluviatile, wood horsetail, variegated scouring rush, cone, Equisetum variegatum, Equisetum palustre, common horsetail, Equisetum hyemale robustum, marsh horsetail, water horsetail, swamp horsetail, genus Equisetum, field horsetail, Equisetum hyemale, Equisetum robustum, Equisetum, Equisetum Sylvaticum, scouring rush, variegated horsetail, strobile, Equisetum arvense, fern ally,

Antonyms:

natural object,