This taxon differs from typical subsp septentrionalis var septentrionalis in having both surfaces of the leaf blades pubescent, together with the stems being pubescent, and the pedicels and capsules pilose with spreading hairs From E. umbellata subsp umbellata var tomentosa of Brazil it differs in the longer capsules and more elongated calyx lobes.
The following specimens, placed with subsp septentrionalis var pubens, have the leaves and stems pubescent as in typical var pubens, but the pedicels are glabrous, and the capsules are only somewhat pubescent varying to glabrous: D.F.: above Los Venados, Cordillera del Avila, between Los Venados and Pico Oriental, alt 1675-2640 m, 27-28 Feb 1944, Steyermark 55595. Miranda: Guayabitos, alt 1250 m, 15 May 1953, Vareschi s n; Hacienda San Rafael, arriba de Petare, alt 1700 m, 31 Jan 1918, Pittier 7721; Piedra Azul, alt 1200 m, 10 Oct 1943, Badillo 362; La Providencia, alt 1000 m, 27 Mar 1939, Pittier 14233; San Antonio-Carrizal, alt 1200-1400 m, Apr 1949, Badillo 1707. Aragua: Colonia Tovar, 22 Mar 1921, Pittier 9341; Colonia Tovar, alt 1210 m, 1854-55, Fendler 596. These specimens represent, therefore, an intergradation with var septentrionalis, although more closely aligned with var pubens, to be regarded as less pubescent extremes of var pubens.