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..2 Leaves oblong-oblanceolate to oblong-spatulate, 1-8 mm wide; adnate portion of filaments conspicuously winged
..2 Leaves linear or linear-lanceolate, 1-3 mm wide; adnate portion of filaments very narrowly winged
......4 Leaf bases decurrent down the stem as a wing; leaves broadly elliptic to ovate or spatulate, margins plane; pedicels to 15 (-30) mm
......4 Leaf bases not decurrent, stems not winged; leaves oblong to spatulate, margins undulate; pedicels 0-3 mm
........5 Seeds yellow to tan; leaves alternate
........5 Seeds brown to dark brown; leaves opposite at branch tips, otherwise alternate