Transcript Plant Class Sp 2010/Rosaceae Jaclyn received 21 Jan 2010x

Rosaceae
By:Jaclyn Kuklock
Rose Flower
Rosaceae plants grow as
trees, shrubs, and perennial herbs.
They also grow as climbing plants, like
vines, but don’t cling or climb up.
There are 5 sepals united at the base, 5
petals rising from the top of a saucerlike structure, numerous stamens and
one compound ovary.
The petals are a good
source of Vitamin C for
people.
Flower Info.
• There are over 3,000 species in the rose family and
about 107 genera worldwide.
• They are found on all continents except Antarctica,
but the majority are found in Europe, Asia, and North
America.
• They have been in existence for about 35 million
years.
• Leaves are simple and alternate.
• Flowers are radially symmetrical and have male and
female structures (perfect).
Fruits
There are different types of fruits, like single-seeded, soft, fleshy, as well
as drupes. The mature pseudocarp (pome or hip-type of fruit), the true fruit,
is located in the center and has 5 distinct carpels which contain seeds.
The fruits serve as sources of nutrition for many wild animals. The pomes,
drupes, and aggregate fruits attract animals to eating the fruit, making the
seeds ingested or disposed of.
Leaves: alternate and simple with stipules
Stems: changing, climbing
Flowers: regular and showy.
Pollination and Structure
Epicalyx is composed of 5 sepal-like structures which occur
below and alternate.
Anthers have two chambers, called locules, holding
thousands of pollen grains.
Most species have large, white, pink, or red petals which
are designed to attract pollinating insects.
Dwarf Raspberry
Leafy branches, softly hairs, thornless, shrub.
Habitat: Common in NW Ontario
Leaves: Alternate and compound, diamondshaped, surfaces hairless.
Flowers: 1-3 white, in a loose cluster on slender
stalks, individual flowers have 5 petals.
Common
strawberry
Woodland strawberry
References:
• http://montana.plantlife.org/families/Rosaceae.htm
• http://science.jrank.org/pages/5925/RoseFamily-Rosaceae.html
• http://www.borealforest.org/shrubs/shrub42.
htm