a	Leaves simple or palmately lobed or palmately compound
	b	Leaves pinnate, pinnately lobed or decompound, or basal leaves simple and cauline leaves pinnately dissected

	a	Plants woody, not dying down to ground level after flowering
	b	Plants herbaceous (i.e. stems dying down to ground level after flowering, occasionally radical leaves persistent, or stems creeping and only the inflorescences dying)

	a	Fruit hairy	Deverra
	b	Fruit glabrous

	a	Mericarps heteromorphic, winged
	b	Mericarps homomorphic, not winged

	a	Margins of leaflets toothed Seed loose within endocarp	Polemanniopsis
	b	Margins of leaf or leaflets entire Seed adherent to endocarp	Heteromorpha

	a	Leaves flat, palmately lobed, with distinct intramarginal nerve	Polemannia
	b	Leaves ± terete	Anginon

	a	Leaves palmately compound
	b	Leaves simple or palmately lobed to partite (Sanicula)

	a	ruit dorsally flattened	Peucedanum
	b	Fruit not flattened	Pimpinella

	a	Leaf blade many times longer than broad
	b	Leaf blade not more than 3 times as long as broad

	a	Umbels (heads) simple with conspicuous involucre of bracts united at base, pale green, greenish yellow or silvery white, sometimes becoming pinkish inside	Alepidea
	b	Umbels compound Involucral bracts free

	a	Leaves grass-like, tapered to an acute tip Flowers yellow	Bupleurum
	b	Leaves linear or spathulate, blunt Flowers white	Itasina

	a	Plants acaulescent Leaves prickly, in dense rosette Flowers unisexual Fruit 1-seeded	Arctopus
	b	Plants caulescent Leaves not prickly (at most with strong marginal cilia) Flowers bisexual or andromonoecious Fruit 2-seeded

	a	Umbels simple, or seemingly so by forming compact heads
	b	Umbels manifestly compound, umbellules with conspicuous peduncles

	a	Leaves palmately lobed or divided
	b	Leaves entire or toothed

	a	Involucral bracts united Fruit glabrous except for some blunt scales at the top	Alepidea
	b	Involucral bracts free Fruit with hooked bristles	Sanicula

	a	Leaves tomentose below Involucral bracts free	Hermas
	b	Leaves never tomentose below Involucral bracts united	Alepidea

	a	Leaves palmately lobed, cordate or peltate Fruit with vittae in the furrows	Dracosciadium
	b	Leaves palmately trifid Fruit with vittae below veins in the ribs	Lichtensteinia

	a	Plants woody, not dying to ground level after fruiting
	b	Plants herbaceous, either dying down to ground level after fruiting or low creeping herbs

	a	Fruit (and ovaries) hairy or bristly
	b	Fruit (and ovaries) glabrous

	a	Leaves thick, fleshy	Marlothiella
	b	Leaves not fleshy

	a	Plant leafless at flowering Leaves, if present, with linear segments	Deverra
	b	Plant with well developed leaves at flowering Leaf segments broadly elliptic	Diplolophium

	a	Mericarps unequal, ribs winged	Heteromorpha
	b	Mericarps equal, ribs not winged or with wing-like ridges only

	a	Fruit not flattened, or slightly compressed laterally
	b	Fruit strongly flattened dorsoventrally

	a	Fruit ribs without wing-like extensions Surface between the ribs tuberculate or wrinkled	Anginon
	b	Fruit ribs without wing-like extensions Surface smooth between the ribs

	a	Lower leaves with broad segments, upper ones with linear segments Sparsely hairy at least along lower midrib Stem not conspicuously ribbed	Glia
	b	Lower and upper leaf segments linear to subterete segments Glabrous Stems ribbed	Stenosemis

	a	Shrub or small tree Leaves deciduous, simply pinnate with fine-tipped teeth Vittae inconspicuous or absent in ripe fruit	Steganotaenia
	b	Subshrub Leaves evergreen, pinnatisect Vittae conspicous, one in each furrow between the ribs and 2 on the commissure	Peucedanum

	a	Foliage leaves all radical, those on the stem reduced to a sheath with or without a vestigial lamina
	b	Foliage leaves both radical and cauline

	a	Fruit with vittae below the veins in the ribs	Lichtensteinia
	b	Fruit with vittae in the furrows between ribs

	a	Fruit strongly dorsoventrally flattened Basal leaves sometimes present at flowering	Peucedanum
	b	Fruit not flattened Leaves usually withered or not yet produced at flowering

	a	Mericarps heteromorphic	Annesorhiza
	b	Mericarps homomorphic

	a	Fruit oblong with strong, yellow, almost contiguous ridges, 5 mm or longer	Annesorhiza
	b	Fruit ovoid or flask-shaped with ribs well spaced, shorter than 4 mm	Chamarea

	a	Fruit hairy or bristly
	b	Fruit glabrous

	a	Perennials or biennials
	b	Annuals or biennials

	a	Involucre absent	Pimpinella
	b	Involucre present

	a	Involucral bracts pinnatisect	*Daucus
	b	Involucral bracts entire

	a	Low spreading herb Umbels simple or apparently so because of very short rays	Agrocharis
	b	Erect herbs Umbels obviously compound

	a	Leaves pinnate with broad leaflets	Diplolophium
	b	Leaves usually absent at flowering, if present segments linear	Deverra

	a	Fruit processes large, multicellular, cells multiseriate, sometimes flattened at the base and usually with recurved barbs (glochids) at the apex
	b	Fruit processes unicellular, or at least of uniseriate cells, neither flattened nor barbed

	a	Processes arranged on ribs (especially the secondary ribs) of the fruit, the larger much flattened at base Involucral bracts pinnate	Daucus
	b	Processes spread over surface of fruit, scarcely flattened at base Involucral bracts entire	Torilis

	a	Fruit oblong	Ezosciadium
	b	Fruit ± as broad as long

	a	Fruit much flattened, discoid, margins thickened, mericarps not separating	Choritaenia
	b	Fruit not flattened, mericarps separating when ripe

	a	Erect Basal leaves usually cordate, upper dissected Involucre absent	Pimpinella
	b	Dwarf, branched from base All leaves dissected Involucre present

	a	Fruit ovoid Lateral ribs marginal	Sonderina
	b	Fruit distinctly didymous Lateral ribs not marginal	Stoibrax

	a	Perennials or biennials
	b	Annuals or biennials

	a	Fruit dorsoventrally flattened	Peucedanum
	b	Fruit ± round in cross section

	a	Fruit at least twice as long as broad
	b	Fruit distinctly less than twice as long as broad

	a	Leaf segments filiform Plant strongly aromatic Flowers yellow	*Foeniculum
	b	Leaf segments flat Plant weakly aromatic Flowers white	*Anthriscus

	a	Involucre absent
	b	Involucre present

	a	At least some of the umbels shortly pedunculate, apparently leaf-opposed	Apium
	b	All umbels on well developed peduncles	Pimpinella

	a	Leaves once-pinnate
	b	Leaves decompound

	a	Teeth on leaflet margin spreading	Berula
	b	Teeth on leaflet margin incurved and often slightly overlapping	Sium

	a	Low growing, somewhat fleshy maritime herb Fruit with rather thick but narrow wings Vittae persistent Endosperm not sulcate	Dasispermum
	b	Erect biennial, 0.5-3.0 m high Leaves not fleshy Fruit only ridged Vittae not usually visible in mature fruit Endosperm sulcate	Conium

	a	Involucral bracts pinnatisect	*Ammi
	b	Involucral bracts undivided or absent

	a	Fruit strongly flattened dorsoventrally	Capnophyllum
	b	Fruit not strongly flattened dorsoventrally, sometimes laterally compressed

	a	Involucre absent
	b	Involucre present

	a	Outer flowers with outer petals enlarged	*Coriandrum
	b	Outer flowers with all petals equal

	a	Calyx teeth obsolete
	b	Calyx teeth distinct

	a	Biennial Umbels strongly pedunculate	Conium
	b	Annual Umbels sessile or subsessile	*Cyclospermum

	a	Vallecular vittae 2 or more Stem erect, not branched in lower part Basal leaves often simply cordate	Pimpinella
	b	Vallecular vittae solitary Stem branched in lower part Basal leaves pinnatisect	Sonderina

	a	Surface of fruit covered with close-set clavate vesicles	Phlyctidocarpa
	b	Surface of fruit without vesicles

	a	Endosperm sulcate on commissural face Erect biennial branched only in upper part Radical leaves usually ± 300 mm long	Conium
	b	Endosperm not sulcate L low-growing plants Radical leaves usually only 150 mm long

	a	Leaves fleshy Fruit with narrow but thickish wings	Dasispermum
	b	Leaves not fleshy Fruit with slender ribs	Sonderina