PES

*ḳVṣl- - leaf (CDG 450, Kogan 2015: 447)

For possible semantic parallels (“leaf” derived from “to peel, to strip off”) v. Buck 1949:525 (cf. also Appleyard 1977:40).

Geez
ḳʷaṣl - leaf (CDG 450)
Tigrinya
ḳäṭälya - green (TED 80)

Kogan 2015: “As Bulakh correctly points out, -ṭ- in the Tigrinya form suggests an Amharism.”

Tigrinya
ḳʷäṣli - leaf (TED 1059)
Amharic
ḳəṭäl - leaf (AED 829)
Harari
ḳuṭṭi - leaf (EDH 131)
Soddo
ḳəṭäl - leaf (EDG 508)