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Key to Borodinia

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1 Pedicels of fruits definitely deflexed; pedicels of flowers spreading (spreading or very slightly ascending in first few mm, then down-curved).
1 Pedicels of fruits erect or ascending; pedicels of flowers erect, ascending, spreading, or arching.
..2 Mature fruits < 4 cm long; stems branched or simple at the base.
....3 Stem leaves (most of them) < 5 mm wide; stems branched at the base
....3 Stem leaves (most of them) > 8 mm wide; stems simple at the base.
......4 Lower cauline leaves glabrous or sparsely pubescent on the upper surface; fruits erect and appressed, 3-5 cm long
......4 Lower cauline leaves hirsute or strigose on the upper surface; fruits widely ascending or spreading. 1.5-4 cm long.
........5 Petals 6-9 mm long; fruiting pedicels 10-16 mm long; mature fruits 2.5-4 cm long; pubescence of the lower leaf surface simple; seeds winged
........5 Petals 2-5 mm long; fruiting pedicels 2-10 (-13) mm long; mature fruits 1.5-3 cm long; pubescence of the leaf surface stellate; seeds wingless.
..........6 Petals 2-3 mm long, white to cream; fruiting pedicels 2-3.5 mm long; siliques 1.5-3 cm long; pubescence of the upper leaf surface simple
..........6 Petals 3-5 mm long, pink or purplish; fruiting pedicels 5-10 (-13) mm long; siliques 1.5-2 cm long; pubescence of the upper leaf surface stellate
..2 Mature fruits > 4 cm long; stems generally simple at the base.
............ 7 Fruits erect, appressed against the stem, the fruiting inflorescence < 2 cm in diameter.
............ ..8 Mature fruits terete, (4-) 7-9.5 cm long; basal leaves 5-12 cm long, stellate pubescent; cauline leaves 4-12 cm long; pubescence of the stem mostly of spreading, simple hairs
............ ..8 Mature fruits flat, 1.5-10 cm long; basal leaves 2-8 cm long, nearly glabrous; cauline leaves 1-4 cm long; pubescence of the stem mostly of appressed, forked hairs.
............ ....9 Mature fruits 4-10 cm long, 1.5-2.5 mm wide, with 2 rows of seeds in each locule
............ ....9 Mature fruits 1.5-7 cm long, 0.7-1.1 mm wide, with 1 row of seeds in each locule
............ 7 Fruits ascending to spreading (not erect and appressed to the stem), the fruiting inflorescence > 4 cm in diameter.
............ ......10 Cauline leaves not at all auricled or sagittate-clasping at the base.
............ ........11 Calyx 2.9-4.8 mm long; flowering Apr-May; plant unbranched or with 1-3 branches (sometimes more if the main stem damaged), the inflorescence thus a raceme or slightly paniculate; mature fruits 5.2-9.8 cm long; seeds 64-80 per silique; seeds with wing 0.2-0.5 mm wide
............ ........11 Calyx 2.0-3.3 mm long; flowering mid Jul-Sep; plant with numerous branches (well-developed plants usually with at least 10), the inflorescence thus a diffuse panicle; mature fruits 4.3-8.0 cm long; seeds 30-42 per silique; seeds with wing 0.1-0.2 mm wide
............ ..........12 Basal leaves subentire to serrate or sinuate-serrate; petals white, to 5 mm long, equaling or slightly surpassing the sepals; longest cauline leaves usually 8-18 cm long; plant glaucous
............ ..........12 Basal leaves sharply serrate-dentate to strongly laciniate or lyrate-pinnatifid; petals creamy-white, to 8 mm long, about 2× the length of the sepals; longest cauline leaves usually 3-5 cm long; plant green or red-tinged
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