Stylidium adnatum
S. adnatum print from Curtis's Botanical Magazine.
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Stylidiaceae
Genus: Stylidium
Subgenus: Stylidium subg. Nitrangium
Section: Stylidium sect. Rhynchangium
S. adnatum
Binomial name
Stylidium adnatum

Stylidium adnatum (the beaked triggerplant) is a dicotyledonous plant that belongs to the genus Stylidium (family Stylidiaceae). S. adnatum is endemic to Australia and is found primarily in the southwest region of Western Australia.

This species is leafy-stemmed and scrambling, growing up to 10 cm tall with leaves to 3 cm long and 5 mm wide. It blooms in late winter and spring with small (3–4 mm wide), white flowers that bear red stripes.[1]S. adnatum is primarily found in jarrah and karri forests, among reeds of paperbark swamps, and in heath by streams entering the ocean.[2]S. adnatum is also commonly found in the wild growing along cleared firebreaks in the Porongurup ranges, indicating that it is tolerant to ground disturbance. It has been cultivated by members of the WA Wildflower Society (a not-for-profit group) in Landsdale,[3] where it can be purchased by the public. It is easily propagated by cuttings, and is robust in culture although can suffer from sucking insects such as scale. It has been found to grow well as an indoor potted plant near a well -lit window with indirect/partial sun. Taken together, these two pieces of information indicate that it would make a good commercial houseplant, possibly capturing the sector of the market fascinated by touch-stimulated plants such as venus fly traps or mimosa.

S adnatum in pot
Stylidium adnatum growing indoors in pot culture. The mixture consists of 33% charcoal, 33% propagating sand and 33% premium native potting mix. This plant has been growing in this pot for 10 months, and has trebled in size during that time.

Stylidium adnatum var. abbreviatum (Benth., 1868) is a variety of this species found in wild populations and is noted for its short and dense inflorescence. The variety was discovered and named twice, the second being S. adnatum var. propinquum (R.Br.), though this name is no longer used.[2][4]

See also


  1. ^ Darnowski, Douglas W. (2002). Triggerplants. Australia: Rosenberg Publishing.
  2. ^ a b Erickson, Rica. (1958). Triggerplants. Perth: Paterson Brokensha Pty. Ltd. 97-98.
  3. ^ "Northern Suburbs Branch – Wildflower Society of Western Australia". Retrieved 2018-09-25.
  4. ^ FloraBase, the Western Australia Flora. Department of Environment and Conservation, Government of Western Australia. Accessed online on Nov. 30, 2006.