frond
fern leaf
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
frond The photosynthetic leaf blade of a fern.
front The boundary between two air masses of different temperature and density.
frontal plane. A plane parallel to the main axis of the body and at right angles to the sagittal plane.
Ferns have fronds.
Conifer leaves are typically needle-, awl-, or scale-shaped
Angiosperm (flowering plant) leaves: the standard form includes stipules, a petiole, and a lamina.
Lycophytes have microphyll leaves.
On the other hand, the villi on that part of the chorion which is in contact with the decidua placentalis increase greatly in size and complexity, and hence this part is named the chorion frondosum (Fig. 28).
that had one fertile frond (Butters and Tryon 1948). The apical portion of this frond had fertile sporangia. Spores from this frond germinated and grew into prothallia. About six months after germination sporophytes were produced.
In 1995 Peter Steinberg of the University of New South Wales, Australia, realized that the fronds of a red algae growing in Botany Bay are rarely covered with biofilms.
Sori form on the fronds. Each contains many sporangia mounted on stalks.
Within each sporangium, the spore mother cells undergo meiosis producing four haploid spores each.
When the humidity drops, ...
Epiphyte. Microalgal organism living on a surface (e.g., on a seaweed frond)
Estuarine flow. Seaward flow of low-salinity surface water over a deeper and higher -alinity layer ...
(Science: botany) Ostrich fern a kind of fern (Onoclea Struthiopteris), the tall fronds of which grow in a circle from the rootstock. It is found in alluvial soil in Europe and North America.
Most ferns have pinnate leaves, exhibiting small leaflets on a frond, as shown in Figure 19. Ferns have megaphyllous leaves, which cause a leaf gap in the vascular cylinder of the stem/rhizome, as shown in Figure 20.
The leaves, called fronds, grow up from the rhizome each spring. Ferns are dispersed to new locations by means of tiny windblown spores. Earlier in the earth's history, ferns grew in profusion and their remains contributed to the formation of coal.
Instead of being on branches, their cones are in the center of the plant and can get really large. They also have big waxy fronds, and when it's time to reproduce, the female plants have a great fruit that grows in the middle of their stem.
These identifying characteristics of a clade are called synapomorphies (shared, derived characters). For instance, hardened front wings are a synapomorphy of beetles, while circinate vernation, or the unrolling of new fronds, ...
 See also: Species, Plant, Organ, Cells, Animal
  
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