MULTI-ACCESS KEY TO EPIPREMNUM IN WEST AND CENTRAL MALESIA (ADULT PLANTS ONLY)

Shoot
Prophyll and cataphylls degrading to conspicuous nets and fibre . 5. E. nobile,6. E. pinnatum, 7. E. pinnatum 'Aureum'
(beware certain Rhaphidophora species)

Prophylls and cataphylls falling . 1. E. ceramense, 2. E. falcifolium, 3. E. giganteum, 4. E. moluccanum, 5. E. nobile, 8. E. silvaticum

Internodes asperous . . . . . . . 4. E. moluccanum

Internodes smooth . . . 1. E. ceramense, 2. E. falcifolium, 3. E. giganteum, 5. E. nobile, 8. E. silvaticum

Internodes with prominent irregular whitish longitudinal crests . . 6. E. pinnatum 7. E. pinnatum 'Aureum'

Leaf
Leaf lamina pinnatifid . . . . 6. E. pinnatum, 7. E. pinnatum 'Aureum'

Leaf lamina entire . . 1. E. ceramense, 2. E. falcifolium, 3. E. giganteum, 4. E. moluccanum, 5. E. nobile, 8. E. silvaticum

Leaf lamina elliptic . . . . . . . 4. E. moluccanum

Leaf lamina with tiny to moderate perforations 6. E. pinnatum, 7. E. pinnatum 'Aureum'
(beware Amydrium medium and certain Rhaphidophora species)

Leaf lamina variegated yellow (rarely white) . . . 7. E. pinnatum 'Aureum'
(beware Scindapsus pictus, juvenile S. hederaceus and green-leaved plants of E. pinnatum 'Aureum')

Spadix
Spadix sessile or nearly so . . 1. E. ceramense, 2. E. falcifolium, 3. E. giganteum, 5. E. nobile, 6. E. pinnatum, 7. E. pinnatum 'Aureum', 8. E. silvaticum

Spadix prominently stipitate . . . . . . 4. E. moluccanum

Pistil
Stigma punctiform to globose, or slightly elongate . 4. E. moluccanum, 5. E. nobile

Stigma linear . . . . 1. E. ceramense, 2. E. falcifolium, 3. E. giganteum, 6. E. pinnatum, 7. E. pinnatum 'Aureum', 8. E. silvaticum

Stigma orientation longitudinal . 1. E. ceramense, 2. E. falcifolium, 3. E. giganteum, 6. E. pinnatum, 7. E. pinnatum 'Aureum', 8. E. silvaticum

Stigma orientation circumferential . . . 4. E. moluccanum, 5. E. nobile

Stylar region in fruiting material massively enlarged 2. E. falcifolium, 3. E. giganteum

Epipremnum species arranged by main geographical divisons in west and central Malesia
Borneo: Brunei: 3. E. falcifolium
Kalimantan: 3. E. falcifolium
Sabah: 6. E. pinnatum
Sarawak: 6. E. pinnatum
Java: 6. E. pinnatum
Lesser Sunda Islands: 6. E. pinnatum
Maluku: 1. E. ceramense, 4. E. moluccanum, 6. E. pinnatum
Peninsular Malaysia: 3. E. giganteum, 6. E. pinnatum
Philippines: 6. E. pinnatum
Singapore: 3. E. giganteum, 6. E. pinnatum
Sulawesi: 5. E. nobile, 6. E. pinnatum
Sumatra: 6. E. pinnatum, 8. E. silvaticum
Naturalized: 7. E. pinnatum 'Aureum'
Widely cultivated: 1. E. pinnatum 'Aureum'