]> [collector note: Pennsylvania (col. 1937-52): DAO (col. 1947 & 1952, p.p. et al.), DPU, GH, IACM, ILL, PAC, PH, WS.] Botany Wahl, Herbert Alexander Wahl, Herbert Alexander H. A. Wahl Wahl Herbert Alexander Wahl Wahl, H. A. 1900 1975