Asterolasia rivularis

{{Short description|Species of flowering plant}}

{{Use dmy dates|date=July 2019}}

{{Speciesbox

| image = Asterolasia rivularis.jpg

| image_caption = Asterolasia rivularis in the ANBG

| genus = Asterolasia

| species = rivularis

| authority = Paul G.Wilson

}}

Asterolasia rivularis is a small, upright shrub, with narrow leaves and yellow flowers. It has a restricted distribution in New South Wales.

==Description==

Asterolasia rivularis is a small shrub to {{cvt|1.5|m}} high with young branches covered in brown to grey star-shaped, short matted hairs. The leaves may be narrowly oblong, narrow-oblong to wedge shaped and tapering at the base, {{cvt|1-2.5|cm}} long, {{cvt|2-3|mm}} wide. The leaf upper surface has occasional star-shaped hairs, underside brownish star-shaped to short matted hairs, margins slightly rolled under and narrowing to a short petiole. The flowers are either borne from leaf axils or at the end of branches in small clusters of 1-3, yellow petals about {{cvt|6|mm}} long, upper surface with rusty star-shaped to short matted hairs. The pedicels are up to {{cvt|3|mm}} long when in flower. Flowering occurs in early spring.{{cite web |last1=Harden |first1=G.J |last2=Mole |first2=B.J |title=Asterolasia rivularis |url=http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Asterolasia~rivularis |website=PlantNET-Flora of New South Wales |publisher=Royal Botanic Gardens Sydney |accessdate=15 June 2020}}{{cite book |last1=Wilson |first1=Paul G. |url=https://www.dcceew.gov.au/sites/default/files/env/pages/fb3709f5-d0b4-4a15-94bc-17686ac6a9ae/files/flora-australia-26-meliaceae-rutaceae-zygophyllaceae.pdf |title=Meliaceae, Rutaceae, Zygophyllaceae Volume 26 |last2= |first2= |date=2013 |publisher=ABRS-CSIRO Publishing |isbn=9780643109568 |editor-last=Wilson |editor-first=Annette |location=Melbourne |page=423}}