1	"Leaves compound, base of main division petiole-like and unwinged"	2
1	"Leaves simple, entire to deeply lobed or cut, axis of main division with at least a narrow, toothed wing throughout"	8
2	"Leaves palmate, occasionally palmate-ternate, distal segment of main axis 4--30 mm wide"	3
2	"Leaves +- pinnate, first division generally ternate, others pinnate, distal segment of main axis 1--5 mm wide"	4
3	"Main leaf divisions generally +- 5, central division generally 2--4 cm; styles 2 × calyx lobes; bracts 1--2 mm; fruit occasionally stalked distal to receptacle; common, widespread"	"Sanicula crassicaulis"
3	"Main leaf divisions +- 3, central division generally 4--7 cm; styles +- = calyx lobes; bracts 3--5 mm; fruit +- sessile distal to receptacle; uncommon, coastal"	"Sanicula hoffmannii"
4	"Fruit with many hooked prickles"	5
4	"Fruit with +- rounded tubercles, hooked prickles 0 or few"	6
5	"Staminate flowers 4--6 per umbel, inconspicuous; stem leafy, +- erect"	"Sanicula bipinnata"
5	"Staminate flowers 7--12 per umbel, conspicuous; stem +- leafless, branches generally spreading widely from near base"	"Sanicula graveolens"
6	"Plant from taproot (tuber-like); staminate flowers +- > fruit, inconspicuous --- NCo, NCoR, CaRF"	"Sanicula tracyi"
6	"Plant from a distinct, spheric or irregular tuber; staminate flowers generally >> fruit, conspicuous"	7
7	"Corolla +- yellow or pale red-orange; fruit 2.5--3 mm, most tubercles nipple-like or with bristle; SnFrB"	"Sanicula saxatilis"
7	"Corolla yellow; fruit 1.5--2 mm, tubercles unarmed; widespread"	"Sanicula tuberosa"
8	"Bracts yellow, conspicuous, >> heads; plant prostrate; leaves bright +- yellow-green at flower"	"Sanicula arctopoides"
8	"Bracts +- green, inconspicuous, <= heads; plant spreading to erect; leaves green at flower"	9
9	"Leaf margins not or +- toothed, some basal leaves entire"	"Sanicula maritima"
9	"Leaf margins sharply toothed, all leaves +- lobed"	10
10	"Leaves palmately or +- ternately lobed or dissected; main divisions 3--5, generally not deeply cut"	11
10	"Leaves +- pinnately lobed or dissected; main divisions generally >= 7, generally deeply cut"	13
11	"Main leaf division narrowed to +- petiole-like base"	"Sanicula hoffmannii"
11	"Main leaf division generally >= 10 mm wide at base"	12
12	"Outline of leaf margin +- rounded, teeth generally +- 1 mm; plant stout, 24--120 cm, generally branched well distal to base; widespread"	"Sanicula crassicaulis"
12	"Outline of leaf margin sharply angled, teeth generally +- 2 mm; plant slender, 5--30 cm, generally branched near base; generally coastal"	"Sanicula laciniata"
13	"Leaves appearing +- palmate, with some pinnate divisions --- corolla yellow; CCo, SCoRO, SW"	"Sanicula arguta"
13	"Leaves clearly pinnate, with some ternate divisions"	14
14	"Corolla purple or yellow; fruits 3--8 per head; staminate flowers inconspicuous, < fruit; widespread"	"Sanicula bipinnatifida"
14	"Corolla yellow; fruits 1--5 per head; staminate flowers conspicuous, > fruit; KR (Del Norte Co.)"	"Sanicula peckiana"