Petiole
Expanded and flattened, leaf resembling that of many Citrus

1. P. chinensis, 2. P. dzui, 3. P. gigantipes, 4. P. grandis, 5. P. kerrii, 6. P. macrocephalus, 7. P. pilulifer,
8. P. repens, 9. P. scandens

Slender, canaliculate . . . . 10. P. curtisii, 11. P. kingii, 12. P. lancifolius, 13. P. lorispathus, P. touranensis

Inflorescence
Large, pale or sombre coloured . 2. P. dzui, 4. P. grandis, 8. P. repens, 10. P. curtisii, 13. P. lorispathus, P. touranensis

Large, brightly coloured . . . 3. P. gigantipes, 6. P. macrocephalus, 11. P. kingii

Small . . 1. P. chinensis, 5. P. kerrii, 7. P. pilulifer, 9. P. scandens, 13. P. lancifolius

Peduncle
Notably long, stout . . 2. P. dzui, 3. P. gigantipes, 4. P. grandis, 6. P. macrocephalus, 8. P. repens, 9. P. scandens, 10. P. curtisii, 12. P. lancifolius, 13. P. lorispathus, P. touranensis

Notably long, very slender . . . . . . . . 5. P. kerrii

Short to absent (or nearly so) . . . .1. P. chinensis, 7. P. pilulifer, 9. P. scandens

Stipe
Short to absent (or nearly so) . . 1. P. chinensis, 4. P. grandis, 8. P. repens, 9. P. scandens, 10. P. curtisii, 11. P. kingii, 12. P. lancifolius, 13. P. lorispathus

Stout, straight or flexuous at anthesis 2. P. dzui, 3. P. gigantipes, 6. P. macrocephalus, 7. P. pilulifer, 13. P. curtisii, 13. P. lorispathus,14. P. touranensis

Very slender, traight or flexuous at anthesis, . . . . . . 5. P. kerrii

Sharply bent at anthesis . . . . . . . . 9. P. scandens

Spadix
Fertile portion of spadix cylindrical 2. P. dzui, 8. P. repens, 10. P. curtisii, 11. P. kingii, 12. P. lancifolius, 13. P. lorispathus, 14. P. touranensis

Fertile portion of spadix globose to ovoid 1. P. chinensis, 3. P. gigantipes, 4. P. grandis, 5. P. kerrii, 6. P. macrocephalus, 7. P.pilulifer, 9. P. scandens

Flowers
Congested on the spadix . 1. P. chinensis, 2. P. dzui, 3. P. gigantipes, 4. P. grandis, 5. P. kerrii, 6. P. macrocephalus, 7. P. pilulifer, 8. P. repens, 9. P. scandens, 11. P. kingii, 12. P. lancifolius, 13. P. lorispathus, 14. P. touranensis

Widely scattered on the spadix . . . . . . . 10. P. curtisii


Thai and Indochinese Pothos species arranged by country

Cambodia: 1. P. chinensis, ?3. P. gigantipes, 9. P. scandens.
China: 1. P. chinensis, ?4. P. grandis, 7. P. pilulifer, 8. P. repens, 9. P. scandens.
Lao P.D.R.: 1. P. chinensis, 5. P. kerrii, 8. P. repens, 9. P. scandens.
Mynamar: 1. P. chinensis, 9. P. scandens.
Taiwan: 1. P. chinensis.
Thailand: 1. P. chinensis, 6. P. macrocephalus, 9. P. scandens, 10. P. curtisii, 11. P. kingii 13. P. lorispathus.
Vietnam: 1. P. chinensis, 2. P. dzui, 3. P. gigantipes, 4. P. grandis, 5. P. kerrii, 7. P. pilulifer,
8. P. repens, 9. P. scandens, 12. P. lancifolius, 14.P. touranensis.