1	"Inflorescence a solitary flower."	2
1	"Inflorescence of 2–many flowers."	3
2	"Inner perianth lobes less than one-third length of outer perianth lobes."	Herbertia
2	"Perianth lobes equal."	Romulea
3	"Inflorescence cymose; each set of 2 spathe bracts enclosing 2–many usually pedicellate flowers, flowers withering and falling quickly."	4
3	"Inflorescence spicate; each set of 2 spathe bracts enclosing 1 sessile flower, flower not withering and falling quickly."	12
4	"Style with petaloid branches, each covering a stamen, with 2 erect crests exceeding the flap-shaped stigma (Iris-shaped flowers)."	5
4	"Style without prominently crested petaloid branches; stamens exposed."	6
5	"Plant evergreen with rhizomes; leaves several, erect; stamens free."	Iris
5	"Plant deciduous, with corms; leaf usually solitary, lax; stamens fused."	Moraea
6	"Leaves folded longitudinally, or dorsiventral and channelled; individual flowers not subtended by bracteoles, only spathe bracts present."	7
6	"Leaves equitant; individual flowers subtended by bracteoles, spathe bracts present."	8
7	"Leaves folded longitudinally; inner perianth lobes less than one-third length of outer lobes; rootstock a bulb."	Herbertia
7	"Leaves dorsiventral, channelled; perianth lobes more or less equal; rootstock a corm."	Moraea
8	"Inner and outer perianth lobes very unequal, the inner lobes vestigial."	Patersonia
8	"Inner and outer perianth lobes unequal or subequal."	9
9	"Flower zygomorphic; 2 stamens fertile, the third a staminode."	Diplarrena
9	"Flower actinomorphic; all 3 stamens fertile."	10
10	"Flowers white; outer perianth lobes shorter and narrower than inner lobes."	Libertia
10	"Flowers blue, violet or creamy yellow often purple striped; perianth lobes equal in length."	11
11	"Base of fan of leaves light green; style 3-branched."	Sisyrinchium
11	"Base of leaves reddish purple; style unbranched or occasionally with 3 very short lobes."	Aristea
12	"Style branches deeply 2-fid; stigmas 6 or more."	13
12	"Style branches entire; stigmas 3."	14
13	"Leaves coarsely fibrous in texture; flowers spreading in a loosely distichous vertical spike."	Watsonia
13	"Leaves soft-textured; flowers erect in a secund horizontal spike."	Freesia
14	"Leaves pubescent, longitudinally folded, abruptly narrowed at base."	Babiana
14	"Leaves glabrous to very finely pubescent, never longitudinally folded or abruptly narrowed at base."	15
15	"Flowers pendent on pendent filiform branches of a branched spike."	Dierama
15	"Flowers erect to horizontal; inflorescence unbranched or with erect branches."	16
16	"Perianth tube straight; flowers more or less erect."	17
16	"Perianth tube curved; flowers spreading, often at right angles to axis."	19
17	"Perianth tube narrowly cylindrical, exserted from spathes."	Ixia
17	"Perianth tube funnel-shaped, not or hardly exserted from spathes."	18
18	"Spathes scarious, brown-streaked, ragged or lacerate."	Sparaxis
18	"Spathes membranous, at least partially green, not brown-streaked, entire or emarginate."	Tritonia
19	"Axis of spike strongly flexuous; plant stoloniferous."	Crocosmia
19	"Axis of spike never flexuous; stolons absent."	20
20	"Perianth tube swollen on 1 side near base, abruptly dilated c. 10 mm above ovary."	Chasmanthe
20	"Perianth tube gradually widened, never swollen on 1 side near base."	21
21	"Spathe bracts entire, acute, herbaceous."	Gladiolus
21	"Spathe bracts toothed or lacerate, scarious"	Tritonia