1	"Stems and/or upper surface of leaves at least sparsely haired (close inspection necessary, ideally using low power magnification)"	2
1	"Stems and leaves glabrous"	6
2	"Upper surface of leaves (excluding margins) glabrous"	3
2	"Upper surface of leaves (excluding margins) bearing scattered hairs"	4
3	"Terminal segment of lower- to mid-cauline leaves with mostly 2-4 lobes per side, sometimes fewer, l:w > 1.2; siliquas erect to sub-erect, forming an angle of < 30° with rachis; natural environments, commonly by streams"	"Cardamine microthrix"
3	"Terminal segment of lower- to mid-cauline leaves with 0-1 lobes per side, or if 2, l:w < 1.2; siliquas strongly divergent, forming angle of > 30° with rachis; urban environments (nurseries, garden beds and gutters)"	"Cardamine occulta"
4	"Primary stem usually shorter than rosette leaves or lacking and then long pedicellate flowers arising directly from base; leaves simple or pinnate with 1 or 2 pairs of lateral pinnae; if stem developed, pedicels commonly arising in whorls of 3 or 4; flowers often apetalous or with fewer than 4 petals; siliquas less than 1 mm wide; urban environments"	"Cardamine corymbosa"
4	"Primary stem usually longer than rosette leaves; leaves pinnate with 1-6 pairs of lateral pinnae; pedicels ± alternating along rachis; flowers usually with 4 petals; siliquas 1-1.5 mm wide; urban or natural environments"	5
5	"Stems glabrous or sparsely hairy; cauline leaves 0-3, rarely more, hairs on leaves not obviously tubercle-based; inflorescence rachis straight, developing fruits usually clearly overtopping open flowers; stamens mostly 4; siliquas forming an angle of < 45° with rachis, valves glabrous or hairy; widespread in urban and a range of natural environments"	"Cardamine hirsuta"
5	"Stems sparsely to moderately hairy; cauline leaves mostly > 3, sometimes fewer if plant stunted, hairs on leaves ±distinctly tubercle-based; inflorescence rachis often flexuose, developing fruits not or hardly overtopping open flowers; stamens mostly 6; siliquas forming an angle of > 45° with rachis, valves glabrous; urban and sometimes natural environments in moist, shady habitats"	"Cardamine flexuosa"
6	"Perennials, horizontal stem growth extensive, sometimes also much branched and forming dense broad clumps; alpine or sub-alpine"	7
6	"Annuals, or perennials, extensive horizontal growth lacking, but sometimes rootstock of rosetted perennials elongating in small increments each season, and sometimes branching"	8
7	"Stems slender, 1-2 mm in diam., hardly succulent; ascending stems often unbranched, sometimes few-branched, rosettes not developing where stem turns vertical or rosette leaves up to 6; subalpine to alpine areas of N.S.W. and Vic"	"Cardamine astoniae"
7	"Stems robust, mostly 2-5 mm diam., succulent, ascending stems often few-several-branched, developing ±loose rosettes of many leaves; endemic to alpine zone of Mt. Kosciuszko region"	"Cardamine robusta"
8	"Stems erect or trailing, to c. 60 cm long; cauline leaves 7-many, pinnatisect, segments of higher leaves ± linear; petals > 5 mm long; mature style >1.5 mm long; lowland swamps"	"Cardamine tenuifolia"
8	"Stems erect or ascending, mostly < 30 cm long; cauline leaves mostly 0-6, not divided or division various; petals and mature style various lengths; habitat various"	9
9	"Plants developing subtuberous roots; petals white, 5-8 mm long; lowland, western Vic., south-eastern S.A., Tas. (only one collection in past 100 years)"	"Cardamine gunnii"
9	"Plants not developing subtuberous roots; petal colour and length various; lowland to alpine; distribution various"	10
10	"Annuals; inflorescences indeterminate, primary inflorescence commonly of > 10 flowers; siliquas forming an angle of 30-45° with rachis; urban environments (nurseries, garden beds, gutters)"	"Cardamine occulta"
10	"Annuals or perennials; inflorescences determinate or indeterminate, primary inflorescence of 2-many flowers; siliquas erect or nearly so; natural environments"	11
11	"Annuals; rosette usually entirely lost before first fruits mature; all basal leaves with base of terminal blade/segment/pinna attenuate to broad-cuneate; inflorescences from upper cauline leaves commonly overtopping the primary inflorescence; inflorescences determinate, mostly 2-7-flowered; lowlying areas; inland plains of N.S.W., Vic., and south-eastern S.A."	12
11	"Annuals or perennials; rosette often more persistent than above; at least the earlier basal leaves with base of terminal blade/segment/pinna truncate to cordate, or if cuneate the terminal blade/ segment/pinna > 7 mm wide and/or cauline leaves entire, l:w c. 3; inflorescences from upper cauline leaves not overtopping the primary inflorescence; inflorescences determinate or indeterminate, 2-many-flowered; habitat and region various but not as above"	13
12	"Lower- to mid-cauline leaves undivided and ± narrow-linear or pinnatisect with 1 or occasionally 2 segments per side; segments unlobed, not narrower at base or base >1/2 the width of segment"	"Cardamine lineariloba"
12	"Lower- to mid-cauline leaves pinnate or pinnatisect with 2 or 3 pinnae/segments per side; segments often lobed, narrower at base, base < 1/2 the width of segment"	"Cardamine moirensis"
13	"Leaves all simple, ± spathulate, or some pinnatisect, the terminal segment longer than broad, narrow to broad cuneate basally, lateral segments sessile, obovate"	14
13	"Commonly at least some basal leaves pinnate, terminal pinna, or blade of simple leaves, c. as long as broad, base truncate to cordate"	15
14	"Rosette leaves undivided or usually a proportion with lateral segments; cauline leaves often deeply cleft, sinuses acute; inflorescences of up to 30 or more flowers; sepals 1.8-3 mm long, petals 4-7 mm long"	"Cardamine franklinensis"
14	"Rosette leaves undivided; cauline leaves not deeply cleft, sinuses not acute; inflorescences of up to 15 flowers; sepals 1.3-1.8 mm long, petals 2.5-4 mm long"	"Cardamine tryssa"
15	"Perennials, rootstock with persistent leaf bases clustered as evidence of previous seasons’ rosettes; petals entirely white or pink abaxially, 4-12 mm long; seeds 1.2-2.5 mm long; hills at moderate altitudes to alpine"	"Cardamine lilacina"
15	"Annuals or biennials, rootstock not developing as above; petals white, 2-4 mm long; seeds 0.7-1.3 mm long; lowland to subalpine"	16
16	"Mid-cauline leaves pinnate, lamina of terminal pinna 6-30 mm wide, frequently 2-4 lobes per side, sometimes fewer; margins of pinnae bearing a few to several minute hairs (thorough inspection with magnification may be required)"	"Cardamine microthrix"
16	"Mid-cauline leaves pinnate or pinnatisect, if pinnate, lamina of terminal pinna < 8 mm wide, entire or with 1 shallow lobe per side; margins of pinnae quite glabrous"	17
17	"Cauline leaves 0-3, if 2 or 3 the uppermost cauline leaf mostly < 2.5 cm long; racemes somewhat congested, rachis finally < 4 cm long; pedicels and rachis sometimes minutely papillose; hilly country to subalpine"	"Cardamine papillata"
17	"Cauline leaves 2-6, uppermost cauline leaf mostly > 2.5 cm long; racemes somewhat lax, rachis of at least primary inflorescence commonly finally > 4 cm long; pedicels and rachis never papillose; lowland regions"	"Cardamine paucijuga"