Characters;"O. aimodisca";"O. longifolia";"O. muscicola" Leaf-blade;"oval to ovate, base cordate or auriculate, margin crenate";"narrowly elliptic to oblanceolate, base attenuate, margin serrulate";"narrowly elliptic to lanceolate, base often slightly oblique, narrowly to broadly cuneate, margin serrate to serrate-crenate, sometimes doubly so" Petiole;"brown villous and pubescent";"grey to brownish pubescent";"densely rust-brown villous" Peduncle;"densely brown villous and pubescent";"sparsely brownish villous to pubescent";"rust-brown villous and glandular-pubescent" Bract;"lanceolate to narrowly triangle, outside brown pubescent margin nearly entire to denticulate";"oblanceolate, outside pubescent, margin entire";"lanceolate, outside rust-brown villous, margin entire" Calyx;"lobes linear-lanceolate or narrowly triangular, both sides densely pubescent, margin denticulate";"narrowly ovate, outside sparsely brownish pubescent, inside glabrous, margin entire";"lanceolate, outside sparsely white pubescent and rust-brown villous, margin entire" Corolla;"outside densely pubescent, inside puberulent in the throat and on adaxial lobes";"outside sparsely glandular puberulent, inside sparsely glandular puberulent";"outside sparsely puberulent, inside glandular pubescent" Filaments;"sparsely pubescent";glabrous;"sparsely puberulent" Anthers;"oblong, separated";"reniform, connected in pairs";"reniform, connected in pairs" Pistil;"densely pubescent";glabrous;glabrous Disc;"blood red";yellow;yellow-green