1	"Leaves all flat or trigonous"	2
1	"Leaves terete or flattened terete, or sometimes with a few flattened leaves also present"	13
2	"Leaves linear, 1–4 mm wide, twisted through 90° at base"	3
2	"Leaves more than 4 mm wide, twisted through 90° at base or not"	4
3	"Lignotuberous; inflorescence of 10–36 flowers; leaves 3–12 mm wide; mainly drier heaths and mallee scrub, from Otway Range west to South Australian border; flowers Sep.-Oct., vegetative growth starting Nov"	"Hakea repullulans"
3	"Non-lignotuberous; inflorescence of 6–18 flowers; leaves 1–4 mm wide; heathlands and forests east of Otway Range; flowers Aug.-Sep., vegetative growth starting late Aug. to early Sep"	"Hakea ulicina"
4	"Leaves with 3 or more prominent longitudinal veins"	5
4	"Leaf venation obscure, somewhat pinnate with a single faint longitudinal vein"	10
5	"Inflorescence a spherical head, usually with more than 70 flowers per head; perianth turning pink or reddish; fruit with or without a distinct keel along lower suture line; leaves somewhat petiolate"	6
5	"Flowers and fruits not as above; leaves not appearing petiolate"	7
6	"Leaves 6–30 mm wide with 3–7 prominent longitudinal veins; fruit with a distinct keel along lower suture line"	"Hakea laurina"
6	"Leaves 23–60 mm wide, usually with 3 prominent longitudinal veins; fruit lacking a keel along the lower suture line"	"Hakea petiolaris"
7	"Leaf margins with spine-tipped teeth"	"Hakea undulata"
7	"Leaf margins entire"	8
8	"Leaves elliptic to broadly elliptic, 15–55 mm wide; branchlets densely tomentose"	"Hakea elliptica"
8	"Leaves linear to narrowly elliptic or narrowly obovate, usually 3–30 mm wide; branchlets densely tomentose or glabrescent"	9
9	"Fruits 2.5–3.5 cm long, more than 1.7 cm wide, curved downwards; pedicel pubescent; leaves not twisted through 90° at base; granite areas of far east"	"Hakea dactyloides"
9	"Fruits 1.5–2.6 cm long, less than 1.7 cm wide, erect; pedicel glabrous; leaves twisted through 90° at base; western Victoria, usually on sandy soils"	"Hakea repullulans"
10	"Leaves auriculate, margins distinctly toothed (at least in distal half)"	"Hakea prostrata"
10	"Leaves not auriculate, margins entire (rarely with a single pair of teeth in H. oleifolia)"	11
11	"Leaves less than 8 cm long, rarely toothed; pedicel and perianth glabrous; pollen presenter conical"	"Hakea oleifolia"
11	"Leaves more than 8 cm long, always entire; pedicel and perianth pubescent or glabrous; pollen presenter lateral or an oblique disc"	12
12	"Inflorescence with up to 10 flowers; pedicel and base of perianth pubescent with white hairs; pollen presenter lateral; fruit smooth or with minute brown warts"	"Hakea eriantha"
12	"Inflorescence 16–28-flowered; pedicel and perianth glabrous; pollen presenter oblique; fruit with large, black, flat-topped warts"	"Hakea salicifolia"
13	"Leaves divided into 2–8 segments, rarely simple; buds straight; inflorescence with more than 40 flowers; pollen presenter an erect cone; fruits distinctly horned; naturalized from cultivation"	"Hakea drupacea"
13	"Leaves not divided; buds curved; inflorescence with fewer than 40 flowers; pollen presenter an oblique disc or erect cone"	14
14	"Leaves grooved below (at least at base)"	15
14	"Leaves not grooved below"	18
15	"Leaves often somewhat flattened; flowers yellow; perianth 1.3–2.2 mm long; pistil 3–4.5 mm long; fruit lacking horns"	"Hakea nodosa"
15	"Leaves terete; flowers white or pink; perianth more than 3 mm long; pistil more than 7 mm long; fruit with horns, these often worn down"	16
16	"Perianth pubescent; leaves flexible, angle between stem and leaves acute"	"Hakea macraeana"
16	"Perianth glabrous; leaves rigid, usually widely spreading from stem"	17
17	"Pistil 8.5–12 mm long; perianth white or pink; pedicel appressed pubescent; leaves spreading widely from stem, rigid; lignotuberous"	"Hakea decurrens"
17	"Pistil (4.5–) 5–7 (–7.5) mm long; perianth white; pedicel villous to hirsute; leaves spreading widely to narrowly angled to stem, flexible or rigid; not lignotuberous"	"Hakea sericea"
18	"Leaf apex bent"	19
18	"Leaf apex straight"	20
19	"Rachis (often visible even if not flowering) 6–14 mm long, white-pubescent; inflorescence with 18–45 flowers; pedicel and perianth glabrous; not all leaves with bent leaf-apex; flowers mostly Oct.-Dec"	"Hakea leucoptera"
19	"Rachis (often visible even if not flowering) 1–3 cm long, brown-pubescent; inflorescence with 6–22 flowers; pedicel and perianth pubescent; all leaves usually with bent leaf-apex; flowers Sep.-Oct"	"Hakea tephrosperma"
20	"Suckering shrub, stems mostly to c. 50 cm high; fruit not formed; Upper Buchan River"	"Hakea asperma"
20	"Plants not suckering; fruit produced, often persisent on plants for many years; widespread"	21
21	"Fruit S-shaped; seed curved; pedicel and perianth pubescent with white hairs"	22
21	"Fruit not S-shaped; seed not curved; pedicel and perianth variously glabrous or pubescent (rarely both pubescent)"	23
22	"Leaves 2–15 cm long, curved; pistil recurved; fruit 2.2–4.5 cm long; flowers Jul.-Nov"	"Hakea rostrata"
22	"Leaves 1–6 cm long, straight; pistil straight; fruit 1.5–2.2 cm long; flowers Aug.-Oct"	"Hakea rugosa"
23	"Fruit less than 9 mm wide, dagger-shaped with toothed ring below middle and long narrowed apex; flowers densely pubescent"	"Hakea teretifolia"
23	"Fruit more than 9 mm wide or if less, not dagger-shaped, lacking toothed ring below middle and not with a long narrow apex; flowers glabrous or only pedicels pubescent"	24
24	"Pedicel and perianth glabrous; pollen presenter oblique or erect; fruits usually ± smooth, not rounded-tuberculate"	25
24	"Pedicel pubescent, perianth glabrous or with a few hairs similar to those on pedicel; pollen presenter oblique; fruits often rounded-tuberculate"	27
25	"Floral rachis 6–14 mm long, white-pubescent; fruit 17–32 mm long, 10–20 mm wide; shrub or small tree to 8 m in north-west"	"Hakea leucoptera"
25	"Floral rachis less than 2 mm long, red-brown pubescent (H. microcarpa) or white-pubescent (H. mitchellii); fruit less than 25 mm long, less than 13 mm wide; shrubs, rarely exceeding 2 m"	26
26	"Fruit inserted more or less at right-angles to stalk, with horns; seed occupying almost whole valve; pollen presenter an oblique disc; flowers 6–12 per inflorescence; shrub 0.6–2 m high; mostly wet heaths in alps and subalps (at low altitudes along rivers in the far east); flowers Sep.-Feb"	"Hakea microcarpa"
26	"Fruit inserted more or less in line with stalk, without horns; seed not occupying whole valve; pollen presenter conical; flowers 16–36 per inflorescence; drier areas in the west; flowers Oct.-Jan"	"Hakea mitchellii"
27	"Leaves 5–13 cm long, rigid; flowers relatively large, pistil 8–10.5 mm long; subalpine woodlands; flowers Oct.-Dec"	"Hakea lissosperma"
27	"Leaves 0.8–5 cm long, flexible; flowers tiny, pistil 3–4.5 mm long; lowland swampy heaths; flowers May-Aug"	"Hakea nodosa"