Citharexylum hirtellum Standl. Citharexylum hirtellum Standl. in Publ. Field Mus. Nat. Hist., Bot. Ser. 4 (8): 257. 1929 sec. Rueda 2012=Citharexylum standleyi var. mexicanum Moldenke in Phytologia 4: 43. 1952 syn. sec. ???