quillwort - translation to English
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quillwort - translation to English

GENUS OF PLANTS
Quillwort; Isoëtes
  • Reproductive cycle of ''Isoetes''. The diploid sporophyte (A) produces microsporangia and megasporangia, which are located at the leaf bases. A cross section of the plant (B) shows that the megasporangia are located more towards the outer leaves (2) and the microsporangia are concentrated in the center (1). Via meiosis, the sporangia produce haploid spores (C). The megasporangia produce megaspores (3) which become female gametophytes and the microsporangia produce microspores (4) which become male gametophytes. The gametophytes germinate inside the spore, cracking the outer layer known as the perispore (5) as they grow via mitosis to expose the reproductive organs (6). Sperm from the male gametophytes locate the archegonia neck cells on the female gametophyte (6) and swim down to fertilize the egg. A diploid embryo is formed and a young sporophyte (D) is rapidly created through mitosis, eventually growing into another adult sporophyte.
  • Quillwort megasporangia

quillwort         

['kwilwə:t]

общая лексика

расходник

ботаника

полушник (Isoetes)

посконник пурпурный (Eupatorium purpureum)

Смотрите также

lake quillwort; pitted quillwort; riverbank quillwort; sugary quillwort; warty quillwort

существительное

ботаника

полушник

расходник (Isoetes)

lake quillwort         
SPECIES OF PLANT
Lake Quillwort; Isoetes hieroglyphica; Lake quillwort

общая лексика

полушник крупноспоровый (Isoetes macrospora)

sugary quillwort      

общая лексика

полушник сладкий (Isoetes saccharata)

Definition

quillwort
¦ noun an aquatic plant related to the clubmosses, with a dense rosette of long, slender leaves. [Genus Isoetes.]

Wikipedia

Isoetes

Isoetes, commonly known as the quillworts, is a genus of lycopod. It is the only living genus in the family Isoetaceae and order Isoetales. There are currently 192 recognized species, with a cosmopolitan distribution mostly in aquatic habitats but with the individual species often scarce to rare. Some botanists split the genus, separating two South American species into the genus Stylites, although molecular data place these species among other species of Isoetes, so that Stylites does not warrant taxonomic recognition. Species of Isoetes virtually identical to modern forms have existed since the Jurassic epoch.

The name of the genus may also be spelled Isoëtes. The diaeresis (two dots over the e) indicates that the o and the e are to be pronounced in two distinct syllables. Including this in print is optional; either spelling (Isoetes or Isoëtes) is correct.

What is the Russian for quillwort? Translation of &#39quillwort&#39 to Russian