Chinese burr

Triumfetta rhomboidea
Herb
Alternate
Simple
Yellow
Green

Erect Shrub with Hariy stems, stellate hairs mixed with simple hairs. Leaves 2.5-7 x 2.5-6 cm, generally rhomboid-ovate, base rounded or cordate, margins irregularly serrate, apex acute or acuminate, stellate-pubescent to glabrescent; basal ones palmately 3-lobed; petioles up to 4 cm long; stipules 3-4 mm long, subulate. Flowers in terminal or leaf-opposed cymes, 5-6 mm across, shortly pedicellate. Sepals 4-5 mm long, lanceolate, hairy without. Petals yellow, 4-5 mm long, oblong-obovate. Stamens 8-15. Ovary c. 1.5 mm long, ovoid, setose. Capsules 4-5 mm across, subglobose, stellate hairy outside, setose; setae c. 2 mm long, hooked at tip.

Common names 
Also known as: Chinese bur, burr bush, diamond burbark, triumfetta weed, hibiscus burr , paroquet burr ,
Family 
Sparrmanniaceae
Deciduous 
No
Flowering time 
Spring - Summer
Native/Exotic 
Exotic
Origin 
This species probably originated in tropical America, but its native distribution is obscure. It is now widely distributed throughout the tropical regions of the world (i.e. pan-tropical).
Notifiable 
No
Council declaration 
SIL – Special Investigation List
Known distribution 

Sometimes considered native to Australia, but now largely beleieved to be widely naturalised in the northern and eastern parts fo the country (i.e. the northern parts of the Northern Territory, northern and eastern Queensland, and north-eastern New South Wales). Also naturalised on Norfolk Island.

Habit 

Erect, much-branched undershrub

Impact and control methods