Churnaka

I am not able to identify the plant “churnaka” mentioned in Valmiki Ramayana:
https://www.valmiki.iitk.ac.in/content?field_kanda_tid=4&language=dv&field_sarga_value=1&field_sloka_value=79&
अङ्कोलाश्च कुरण्टाश्च चूर्णकाः पारिभद्रकाः।
Can anybody please help me out?

Please take a look into Prin. V. S. Apte’s The practical Sanskrit-English dictionary … it is some species of silk-cotton tree.