Equisetaceae


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Related to Equisetaceae: Equisetales

Equisetaceae

 

(horsetails), a family of plants of the class Equisetopsida. The stems have lost the capacity for secondary growth in thickness, and the leaves are reduced. The strobiles (spikes), which bear sporophylls with sporangia, are located on the shoot apexes. Archegonia and antheridia form on the bisexual or unisexual gametophytes (prothallia) that develop from the spores. Spermatozoids with numerous flagella form in the antheridia. After fertilization, the gametophyte gives rise to one or more sporophytes; thus, there is regular alternation of sexual and asexual generations. Representatives of this family include extant species of the genus Equisetum and extinct species of the genera Equisetites, Schizoneura, and a few others.

References in periodicals archive ?
Some aspects of water relations of Equisetum telmateia (Equisetaceae: Pteridophyta).
Binder 116 Verbena pogostoma Latak qura H Klotzsch PTERIDOPHYTA EQUISETACEAE 117 Equisetum bogotense Kunth Shaka, cola de H caballo No.
Ontogenia de los estrobilos, desarrollo de los esporangios y esporogenesis de Equisetum giganteum (Equisetaceae) en los Andes de Colombia.
33 (5.7 [2.6]) 45 (10.3 [1.7]) Ericaceae Arctostaphylos uva-ursi 1 (2) 1 (40) (Linnaeus) Sprengel Equisetaceae Equisetum hyemale Linnaeus 5 (4.8 [6.7]) 2 (3.5 [8.1]) Fabaceae Lathyrus japonicus Willdenow 5 (5.2 [6.7]) 39 (10.6 [1.8]) var.
Si presence has proven to be of importance in some unicellular organisms such as diatoms and in other multicellular sea living organisms such as sponges, in addition to some Equisetaceae and other plants of relevance to man, such as rice, sugar cane and pumpkin.
Stems hollow, jointed, and ridged; leaves inconspicuous and sheathed around stem; sporangia in cone-like strobili terminating stem Equisetaceae
Pinco-pinco Equisetaceae Equisetum bogotense Kunth Cola de caballo, Caballochupa Erythroxylaceae Erythroxylum coca Lam.
Las division Pteridophyta estuvo representada por 6 familias: Adiantaceae, Aspleniaceae, Dryopteridaceae, Equisetaceae, Pteridaceae y Salviniaceae.
Nov 1956 (Equisophyta).--Type: Equisetum L.; Equisetaceae Michx.