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Family- Rosaceae.pptx

Rosaceae is a family of flowering plants that includes roses, strawberries, peaches, almonds, and many other species. It has over 115 genera and 3,200 species that are widely distributed worldwide, including many that are common in Nepal. Species exhibit a range of growth habits from herbs to shrubs to trees. Leaves are usually simple or compound, alternate, and stipulate with reticulate venation. Flowers are bisexual or unisexual, with 5 sepals and petals that are various colors. The family includes many economically important fruit, nut, ornamental, aroma, herb, and woody plants domesticated for human use like apples, strawberries, pears, and almonds

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Family- Rosaceae Systematic Position and Vegetative Characters
Rosaceae Rose Straberry
Systematic Position (Bentham and hooker) Division- Angiospermae Class- Dicotyledons Sub-class- Polyptalae (petals free) Series- Calyciflorae (calyx gamopetalous) Order- Rosales Family- Rosaceae
Distribution • World wide • Genera- 115, Species- 3200 • Common in Nepal
Vegetative Characters • Habit and habitat: may be herb, shrub (Rose) or trees • Root: Tap root or adventitious arising from the underground organs or cuttings • Stem: herbaceous or woody, erect, cylindrical, solid, branching, sometimes divided into nodes and internodes. • Leaf: Simple or compound, alternate, stipulate, petiolate, unicostate reticulate venation
Rose
Some species of Rosaceae • Rosa rubiginosa (Rose) • Fragaria ananassa (Strawberry) • Prunus persica (Peach) • Prunus dulcis (Almond)
Floral Characters • Inflorescence: Variable. Solitary, receme, axillary or cyme, spike like receme • Flowers: pedicillate, bacteate, bisexual or unisexual, actinomorphic, hypozygous, perigynous, epigynous • Calyx: sepals-5, gamosepalous, imbricate, valvate astivation • Corolla: petals- 5, polypetalous,imbricate astivation, petals are various colours.
• Androecium- Many Stamens, anther are small and bicell. • Gynoecium- Consists of many carpels, mostly apocarpus (free), superior but sometimes syncarpous and inferior. • Fruit- variables (berry, pome) • Floral formula –
Floral diagram
Economic importance of Rosaceae • It is one of the most economically important families which comprised the fruit, nut, ornamental, aroma, herb, and woody plants. • Edible crops domesticated for human consumption in Rosaceae include apple, strawberry, pear, peach, plum, almond, sour cherry, and sweet cherry.
Reference • www.tufoe.edu.np • Pandey, B.P.(2011). A Textbook of Botany Angiosperm, S. Chand Publishing. New Delhi.
Family- Rosaceae.pptx