Proto-MSA

*hVrā̆m- - tree (Kogan 2015: 44, 544)

The origin is uncertain. Note perhaps Arb. harm- ‘kind of saline plant’, harmā ‘old wood’ as well as Tgr. harämo ‘straw’ (Kogan 2015: 544, fn. 1428).

Mehri
hərmáyt - tree (ML 160)
The only term for “tree” in MTO. Only sparsely attested in MTjŠ (Kogan 2015: 523).
Jibbali
hérúm - tree (JL 99)
Soqotri
šérhom or ʸhérom - tree (LS 146, 422; CSOL I 661; CSOL II 629)