Non flowering plant
 |
Aloevera
|
Aloevera is a succulent plant species .The species is frequently lited as being used in herbal medicine since the beginning of the first century AD . Extracts from aloevera are widely used in the cosmetic and alternatives medicine industries , being marketed as variously having rejuvenating healing , or soothing properties .Three is, however little scientific evidence of the effectiveness or safety of aloevera extracts for either cosmetic or medicinal purposes and what positive evidence is available is frequently contradicted by other studies .
Description
Aloevera is a stemless or stemmed succulent plant growing to 60-100 cm (24-39in) tall, spreading by offsets. The leaves are thick and fleshy ,green or grey -green ,with some varities showing white flecks on their upper and lower stem surface. The margin of the leaf is serrated and has small white teeth. The flowers are produced in summer on a spick upto 90cm(35in) tall each flower pendulous ,with a yellow tubular corolla 2-3cm long
Traditional medicine
Aloevera is used in traditional medicine as a multipurpose skin treatment .In Ayurvedic medicine it is called kathalai as are extracts from agave earlier records aloeveara use appear in the ebers papayrus from the 16 th century BC. The used widely in the traditional herbal medicine of many countries .
Distribution
The natural range of aloevera is unclear as the species has een widely cultivated throughout the world .The species was introduced to China and various parts of southern Europe in the 17th century .The species is widely neutralised else where occurring in temperature and tropical region of Australia Barbados, Belize ,Nigeria, Paraguay, Mexico and the USA state of Florida and Texas .The actual species distribution has been suggested to be the result of human cultivation.
 |
Red wax palm
|
Introduction
The red sealing wax palm or lipstick
palm, is a palm that is native to Thailand, Malaysia, Sumatra and Borneo.
It is the only species of the genus Cyrtostachys that can be found to the west of the Wallace
Line, the faunal boundary separating the ecozones of Asia and Wallacea Cyrtostachys renda 's name is derived
from several words: the Greek prefix κυρτό- (cyrto-) meaning bent or
curved, the Greek word σταχυς (stachys) meaning "an ear of
grain", and "renda" a Malayan Aboriginal word for palm, which happens to be homonymous to the
Portuguese word "renda," meaning income.
Because of its bright red crownshafts and leaf
sheaths, Cyrtostachys renda has become a popular ornamental plant
exported to many tropical regions around the world Although it is not the source of sealing wax,
the red sealing wax palm got its name because its crownshafts and leaf sheaths
have the same color as the wax used to seal letters close and later
(from about the 16th century) envelopes.
Description
The plant's stipe grows up to 10 centimetres
(3.9 inches) in diameter. Its petioles grow up to 15 centimetres (5.9 inches) long
and have pinnate leaves have about 50 pairs of pinnae. The plant's fruits are
ovoid, 1.4 centimetres (0.55 inches) in diameter, green, turning to a dark
bluish-black when ripe.The lipstick palm is generally grown for its brightly colored and
unusual foliage and it is considered as a plant in high demand for gardening and
a landscaping projects.Because of difficulties propagating them and their
striking colour.
Propagation can occur with fresh seeds, although
they are slow to germinate, or through dividing out suckers In the wild, the
most suitable environment for growth occurs in areas of Southeast Asian lowland
peat swamp forests with the following characteristics: good soil drainage, high
sand content in the soil, a thin peat layer in the soil, a low carbon to
nitrogen ratio (C/N) in the soil, low acid and nutrient levels in the soil and
water but relatively high organic substance levels. The palm grows well in full sun or shade but
needs humid conditions and well-draining soil. However, it also tolerates
flooding and can grow in standing water as its native habitat is peat swamp
forests. It will not tolerate cold
temperatures or periods of drought.
 |
Philodendron
|
Introduction
Philodendron is a large genus of flowering plants in the Araceae family,
consisting of about 900 species according to TROPICOS (a service of the
Missouri Botanical Garden Other sources quote different numbers of species:
S.J. Mayo reports about 350-400 formally recognised species, Thomas
Croat lists about 700 . Regardless of number of species, the genus is the second-largest member of the arum family. Taxonomically, the genus Philodendron
is still poorly known, with many undescribed species. Many are grown as
ornamental and indoor plants. The name derives from the Greek words philo
or "love" and dendron or "tree". They are commonly
called by their generic name.
Distributon
Philodendron species can be found in many diverse
habitats in the tropical Americas and the West Indies . Most occur in humid
tropical forests, but can also be found in swamps and on river banks, roadsides
and rock outcrops. They are also found throughout the diverse range of
elevations from sea level to over 2000 m above sea level Species of this genus are often found
clambering over other plants, or climbing the trunks of trees with the aid of
aerial roots. Philodendrons usually distinguish themselves in their environment
by their large numbers compared to other plants, making them a highly
noticeable component of the ecosystems in which they are found. They are found
in great numbers in road clearings
Philodendrons can also be found in Australia, some
Pacific islands, Africa and Asia, although they are not indigenous and were
introduced or accidentally escaped.
Description
The
leaves are usually large and imposing, often lobed or deeply cut, and may be
more or less pinnate. They also be oval, spear-shaped, or in many other
possible shape variations. The leaves are borne alternately on the stem. An
interesting quality of philodendrons is they do not have a single type of
leaf on the same plant. Instead, they have juvenile leaves and adult leaves, which can be drastically different from one another . The leaves of seedling
philodendrons are usually heart-shaped. Early in the life of the plant, but
after it has matured past the seedling stage, the leaves will have acquired
typical juvenile leaf's shape and size. Later in the philodendron's life, it
starts producing adult leaves ,a process called metamorphosis. Most
philodendrons go through metamorphosis gradually; there is no immediately
distinct difference between juvenile and adult leaves . Aside from being
typically much bigger than the juvenile leaves, the shape of adult leaves can
be significantly different. Secondary
hemiepiphytes start off on the dark forest floor and climb their way up a tree,
displaying their juvenile type leaves along the way. Once they reach a sufficient
height, they begin developing adult type leaves . The smaller juvenile leaves
are used for the darker forest floor where light is in scarce supply, but once
they reach a sufficient height in the canopy the light is bright enough that
the bigger adult leaves can serve a useful purpose Another possible trigger
occurs in primary hemiepiphytes. These philodendrons typically send their
aerial roots downward. Once their roots have reached the ground below, the
plant will begin taking up nutrients from the soil, of which it had been
previously deprived. As a result, the plant will quickly morph into its adult
leaves and gain in size dramatically . Another interesting quality of
philodendrons leaves is they are often quite different in shape and size even
between two plants of the same species. As a of all these different
possible leaf shapes, it is often difficult to differentiate natural variations
from morphogenesis.
No comments:
Post a Comment