Summary:An erect or semi-erect, biennial or perennial shrub with round, 3-7 lobed leaves and rose purple flowers with dark veins.
First leaves:The leaves develop singly, the first being 12 to 18 mm in diameter with a petiole of approximately the same length, and is hairy. Later leaves are more deeply lobed.
Leaves:The plant develops as a loose rosette-like clump.
Stems:The stems reach 900 mm long, are solid, circular in cross-section, and have simple and a few double or star hairs. Branching especially from the base.
Flower head:Several flowers in a cluster in the leaf axils.
Flowers:25 to 40 mm in diameter.
Fruit:Round, button or pumpkin like capsules, composed of 8-12, wedge or kidney shaped fruitlets in a ring. One seed in each fruitlet.
Key Characters:Rose purple flowers with dark veins.
Flowering times:Seed Biology and Germination:
Origin and History:Europe and temperate Asia.
Distribution:NSW, QLD, TAS.
Detrimental:It is principally a weed of stockyards and disturbed areas, and is of little economic importance.
Toxicity:Probably toxic like the other Mallow species
Management and Control:Thresholds:
Herbicide resistance:Biological Control:
Plants of similar appearance:The Mallows are difficult to separate in the young stages, though Small-flowered Mallow appears to have numerous star hairs present on stem and leaves while Tall Mallow has few. In the mature stage the flower size separates these species. Mallow of Nice (Malva nimbleness All.), which is fairly common in the North-West, is very similar to Tall Mallow.
References:Hyde-Wyatt, B.H. and Morris, D.I. (1975). Tasmanian weed handbook. (Tasmanian Department of Agriculture, Hobart, Tasmania). P92-93. Diagrams.
Acknowledgments:Collated by HerbiGuide. Phone 08 98444064 or www.herbiguide.com.au for more information.