LEAF MORPHOLOGY
SIMPLE LEAF
LEAF SHAPES
CORDATE
Eg: Thespesia populnea
ELLIPTIC
Eg: Dillenia indica L.
LANCEOLATE
Eg: Polyalthia longifolia
LINEAR
Eg: Nandina domestica - BAMBOO
OBLONG
OVATE
Eg: Pachygone ovata
SPATULATE
Eg: Stachytarpheta jamaicensis
COMPOUND LEAVES
UNI-PINNATELY COMPOUND LEAF
Eg: Azadirachta indica A.Juss. - Meliaceae
The opposite, pinnate leaves are 20–40 centimetres (7.9–16 in) long, with 20 to 31 medium to dark green leaflets about 3–8 centimetres (1.2–3.1 in) long. The petioles are short.
BI-PINNATELY COMPOUND LEAF
Eg: Caesalpinia pulcherrima L. - Fabacaea
Bipinnately compound, fern-like, many 3/4in leaflets; normally bright green turning red in winter, sometimes leafless in winter
PAIRY PINNATELY COMPOUND LEAF
Eg: Lannea coromandelica
The leaf lets will be in pair.
IMPARIPINNATE COMPOUND LEAF
Eg: Gliricidia sepium (Jacq.) Kunth ex Walp. - Fabaceae
The leaf lets will be in impair. The apical leaflet will be single.
PALMATE
Having three or more veins, leaflets, or lobes radiating from one point
Eg: Ricinus communis - Euphorbiaceae
PINNATELY TRIFOLIOLATE
Having three leaflets from three different origin.
Eg: Pongamia pinnata (L.) Merr.
PALMATELY TRIFOLIOLATE
Having three leaflets from single origin.
Eg: Toddalia asiatica (L.) Lam.
FAMILY EUPHORBIACEAE (APG III) POWER POINT PRESENTATION BY U.ELAYA PERUMAL.
In India 261,396 hectares are covered with forest.
Russia has the largest area of forest.
India has 446,100 hectares of Mangrove.
Indonesia has the largest area of mangrove.
North american Sequoia species are the tallest trees of the world.
In 2007 9,400,000 tonnes of Coconut were produced in India.
In 2007 3,900,000 tonnes of Orange were produced in India.
In 2007 2,001,400 tonnes of apples were produced in India.
The world's tallest flower is the titan arum (Amorphophallus titanum), which rises to 3 m.
The fastest growing plant is Bamboo. Some species of bamboo can grow 1m height in a day.
The slowest flowering plant is Queen of the Andes (Puya raimondii), it will take 150 years to flower.
The world's smallest seed-bearing plant, the Watermeal (Wolffia arrhiza (L.) Wimm.), is 0.1 cm wide.
The biggest seed is produced by the double coconut palm (Lodoicea maldivica).
The size of the worlds largest leaves, which are found on the African raffia palm.
The size (5 cm) of the dwarf willow, the worlds smallest tree which grows in the arctic tundra region.
The world's deadliest plant releases ricin, a poison that is 10,000 times more deadly than the venom of a rattlesnake.
Cross section of Achyranthes aspera root.
Santalum album L.
Capparis zeylanica L.
Allium cepa L.
Bauhinia tomentosa L.
Oleander indica Medik.
Mangifera indica L.
Catharanthus roseus (L.) G. Don
Lantana camara L. - Verbenaceae
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Gentianales
Family: Apocynaceae
Tribe: Plumeriae
Subtribe: Alstoniinae
Genus: Alstonia(L.) R.Br.
Species: scholaris
Alstonia scholaris (L.) R.Br.- ( Devil tree )
The species Alstonia scholaris (L.) R.Br. was initially called as Echites scholaris by Linnaeus in 1767. The generic name commemorates the distinguished botanist, Prof. C. Alston of Edinburgh, 1685-1760. The species name due to the usage of its timber for the slate making to the school children.
External page: http://en.wikipedia.org/wiki/Alstonia_scholaris
HERBARIUM
A Herbarium is a collection of pressed and dried plant specimens, mounted on sheets bearing a label, arranged according to a sequence and available for reference or study. U.Elaya Perumal started his herbarium from the year 2009. Here he have given portion of his herbarium collection.
External sites
http://www.mobot.org/MOBOT/research/APweb/
http://www.efloras.org/index.aspx
http://www.life.illinois.edu/help/digitalflowers/index.htm
http://www.ars-grin.gov/cgi-bin/npgs/html/gnlist.pl?433
http://www.ethnobotanyjournal.org/
http://species.wikimedia.org/wiki/Main_Page
http://waynesword.palomar.edu/terminf2.htm
http://www.missouriplants.com/index.html