PlantNET Home PlantNET Home | Search NSW Flora | Contact Us  
FloraOnline
Introduction
Plant Name Search
Index Search
Spatial Search
Identification Keys
Classification
Glossary
HerbLink (Type Images)
WeedAlert
Other PlantNET Sites
Other Data Sources
NEW SOUTH WALES FLORA ONLINE Printable Page

Genus Pterocaulon Family Asteraceae

Description: Perennial herbs or small shrubs, with glandular and non-glandular hairs; stems branching, with continuous herbaceous wings, becoming woody below.

Leaves cauline, alternate, entire or toothed, decurrent.

Heads sessile, terminal or subterminal, in sessile or pedunculate compound heads, lacking a general involucre; bracts of partial involucre 2-seriate, the outer short, herbaceous, woolly; inner much longer, scarious, glabrous or ciliate; receptacle naked, flat. Outer disc florets numerous, female, fertile, filiform, 2- or 3-toothed, without ligules; inner disc florets solitary [to few], bisexual, sterile, tubular, 4- or 5-toothed. Anthers tailed. Style branches glabrous, of outer florets filiform, of inner florets flattened to subulate.

Achenes terete or slightly compressed, sparsely hairy; pappus a single row of minutely barbellate bristles.


Photo © ANBG

Distribution and occurrence: World: 18 species, America, Asia, New Guinea, Australia, New Caledonia. Australia: 6 species (2 species endemic), all mainland States except Vic.

Text by M. F. Porteners
Taxon concept:

 Key to the species 
1Compound heads many together, forming a continuous or interrupted spike, 6–8 mm diam., more than 2 cm longPterocaulon redolens
Compound heads solitary, globose to ovoid, 10–20 mm diam., less than 2 cm longPterocaulon sphacelatum

  Privacy | Copyright | Disclaimer | About PlantNET | Cite PlantNET