1	"Corona present, the filaments joined to it"	2
1	"Corona absent, or if present, the filaments free from it"	9
2	"Plant bulbous; leaf blades more or less ovate to kidney-shaped with arching veins, the stalks long and channelled; flowers white"	Proiphys
2	"Plants not as above"	3
3	"Flowering stem hollow"	Phaedranassa
3	"Flowering stem solid"	4
4	"Filaments attached to the base of the anthers (basifixed)"	Chlidanthus
4	"Filaments attached to the side of the anthers and often flexible (versatile)"	5
5	"Ovules in 1–2 vertical rows in each chamber of the ovary (many)"	6
5	"Ovules side by side in each chamber (few)"	8
6	"Leaves linear or strap-like without a stalk; perianth completely white; stamens spreading"	Pancratium
6	"Leaf blade broad and with a stalk"	7
7	"Perianth lobes red, orange, green or yellow"	Urceolina
7	"Perianth lobes white, at least in part"	Eucharis
8	"Ovules 2–8 per cell, basal"	Hymenocallis
8	"Ovules 2–3 per cell, axile"	Eucharis
9	"Filaments attached to the base of the anthers (basifixed) which open by terminal holes"	10
9	"Filaments attached to the side of the anthers and often flexible (versatile) which open by longitudinal slits"	11
10	"Inner and outer perianth whorls different"	Galanthus
10	"All perianth segments the same"	Leucojum
11	"Spathes 1 or 2 fused at the base and forming a tube around the flower stalks"	12
11	"Spathes (1)2(few) not fused into a tube"	15
12	"Corona present (as a trumpet-, funnel- or cup-shaped)"	Narcissus
12	"Corona absent"	13
13	"Perianth bilaterally symmetric, crimson"	Sprekelia
13	"Perianth, more or less radially symmetric"	14
14	"Stamens of 2 different lengths, bent outwards then upwards at the tip"	Habranthus
14	"Stamens of equal length, more or less straight and spreading"	Zephyranthes
15	"Flower stem hollow"	16
15	"Flower stem solid"	19
16	"Perianth cylindrical with the tube longer than the lobes"	Cyrtanthus
16	"Perianth funnel-shaped with the lobes longer than the tube"	17
17	"Leaves and flowering stem on a long neck; flowers lilac-blue"	Worsleya
17	"Leaves at ground level and bulb with little or no neck; flowers not lilac-blue"	18
18	"Each perianth lobe with a cushion-like swelling at the base"	"Cyrtanthus (syn. Vallota)"
18	"Swellings absent"	Hippeastrum
19	"Ovules 1–3 per ovary chamber"	20
19	"Ovules 4 or more per ovary chamber"	22
20	"Spathes 2; perianth-lobes spreading; flower tube curved"	Lycoris
20	"Spathes several; perianth lobes erect; flower tube straight"	21
21	"Leaves in 2 ranks, thick and without distinct midribs; rhizome absent"	Haemanthus
21	"Leaves not obviously in 2 ranks, thin and with midribs; rhizome present below the bulb"	Scadoxus
22	"Leaves spirally arranged; perianth tube long, the lobes spreading to form a cup or bell shape"	Crinum
22	"Leaves distichous; perianth tube short or absent the lobes not spreading widely"	23
23	"Plants rhizomatous; flower stems clearly flattened; fruit a berry"	Clivia
23	"Plant bulbous; flower stem not clearly flattened; fruit a capsule"	24
24	"Umbel round in outline with 20–60 flowers each with a stalk at least 10 cm long"	Brunsvigia
24	"Umbel not as above; flowers usually less than 20"	25
25	"Perianth tube to 5 mm long, the lobes bending away and separated, often with wavy margins"	Nerine
25	"Perianth tube at least 1 cm long, the lobes forming a funnel, more or less overlapping, margins not wavy"	Amaryllis