what are pteris?

Question

what you mean by pteris

Answer 1

Large genus of terrestrial ferns of tropics and subtropics; sometimes placed in family Polypodiaceae.

Answer 2

Pteris is a genus of the fern. You can find out more information by reading the url I have listed at botany.com. Ferns are wonderful plants and add a classy "Victorian" feel to any home. I have many varieties growing in my cottage home at this moment. Good luck and happy growing!
http://www.botany.com/pteris.html

sbj

Answer 3

This is a large group of Ferns that can be grown in greenhouses, hothouses, and homes. There are hardy kinds that lose their leaves (deciduous) and kinds that are evergreen. They are found wild in many parts of the world, such as tropical America, tropical Asia, India, China, Japan, West Indies, southern Africa, Australia, New Zealand and Europe. Pteris vary greatly in their sizes and shapes. Some are a few inches tall and some are several feet tall. Most kinds have fronds that are divided deeply into many long, ribbon-like sections. P. cretica, the Cretan Brake, is one of the most popular kinds. Growing up to 18 inches high, this Fern forms masses of light green, evergreen or semi-evergreen foliage. The leaves are broadly oval to triangular and divided into finger-like segments. P. cretica albolineata grows up to 18 inches high and has evergreen or semi-evergreen leaves, up to 8 inches long. These are in forked or linear segments. They are pale green striped down the center with creamy white.

Answer 4

Continuing a thread from Revival Field: Pteris vittata, or The Chinese Ladder fern (or even simpler, the brake fern), is a highly efficient arsenic hyperaccumulator. And its phytoextractive property may offer economically viable strategies for arsenic filtration out of water supplies.

From The Annie Appleseed Project: “Arsenic pollution of drinking and irrigation water has emerged as a massive health threat in Bangladesh and India, where wells drilled into aquifers have turned out to be tapping poisoned water.

“When the water is used to irrigate rice paddies, arsenic also accumulates in the crop. According to one estimate, 3,000 people may be dying in Bangladesh each year because of arsenic contamination.

“Elless and his colleagues hope their ferns could be adapted to help purify water in these countries; the method is potentially very cheap, and the plants grow readily in warm, humid climates like those of south-east Asia.

“But Meharg is less optimistic. He points out that the ferns may not be able to cope with the huge volumes of water used for irrigation, and that Bangladesh probably lacks the infrastructure needed to maintain such treatment facilities.

“Still, the approach could be valuable in richer countries. For example, thousands of US water-supply systems exceed the new EPA limit for arsenic concentrations in drinking water of 10 millionths of a gram (10 micrograms) per liter.

“The limit comes into effect in January 2006; the existing limit is five times higher. For small rural communities, fern filtering of arsenic could be just the thing to achieve this new limit economically.”

Answer 5

pteris belongs to class "pteridophytes" & genus "ferns". they bear all the characters of pteridophytes & vascular tissues appears first in these classes.

Answer 6

it is a fern plant, grow in mountain hilly regions.
In this plant, leaves are called fronds, leaf lets are called Pinnae.
In this plant leaf lets exhibit circinate vernation

Answer 7

It's Greek for "fern". Don't know any meaning other than that.