342 
ROBINSON. 
7. Primary venation coarse 48. E. squamifera 
7. Veins not coarse. 
8. Petioles not exceeding 2.5 mm, usually shorter.. 5. E. bataanensis 
8. Petioles at least 5 mm long, usually longer. 
9. Calyx-tube 2 cm in diameter 49. E. megalantlia 
9. Calyx-tube less than 1.5 cm 43. E. xanthophylla 
5. Calyx-tube not exceeding I cm in diameter. 
6. Inflorescence very short, flowers small. 
7. Petioles 5-10 mm long 26 . E. conglobata 
7. Petioles not exceeding 3 mm. 
8. Primary veins barely evident on upper surface.. 27. E. subfoetida 
8. Venation more prominent 25. E. rubrovenia 
6. Inflorescence not very short. 
7. Calyx-tube over 1 cm long, very slender 39. E. leptogyna 
7. Calyx-tube over 1 cm long, not very slender. 
8. Flower-buds ellipsoid 40. E. sulcistyla 
8. Flower-buds turbinate. 
9. Calyx-lobes subequal, persistent 41. E. jambos 
9. Calyx-lobes unequal, deciduous 42. E. merrittiana 
7. Calyx-tube less than 1 cm long. 
8. Individual flowers with definite pedicels. 
9. Inflorescence repeatedly branched, many-flowered. 
53. E. candelabriformis 
9. Inflorescence few-flowered, peduncles slender.. 23. E. tripinnata 
9. Inflorescence few to several-flowered, peduncles not slender. 
10. Lateral veins slender 50. E. robertii 
10. Lateral veins fairly strong. 
11. Flowers racemosely arranged 47 .E.brunnea 
11. Flowers paniculately arranged 46 .E.vidaliana 
8. Flowers sessile or with very short pedicels. 
9. Primary veins over 20, distinct 54. E. hutchinsonii 
9. Primary veins under 16, secondary venation close, nearly as 
conspicuous as primary 59. E. pulgarensis 
9. Primary veins under 16, secondary venation open. 
10. Leaves membranaceous or submembranaceous 
22. E. luzonensis 
10. Leaves chartaceous or coriaceous. 
11. Calyx-tube over 5 mm diameter, peduncles stout and 
woody. 
12. Lateral veins about 12 51. E. benguetensis 
12. Veins at least 15 55. E. lacustris 
1 1. Calyx-tube less than 5 mm in diameter. 
12. Inflorescence distinctly branched, leaf-apex not or 
barely acuminate 38. E. macgregorii 
12. Inflorescence branched, leaves acuminate. 
13. Petioles about 1 cm long 46. E. vidaliana 
13. Petioles less than 5 mm 52. E. bordenii 
12. Flowers subcapitate on main axis of inflorescence or 
short lateral branches, leaves acuminate. 
13. Leaves coriaceous 57. E. philippinensis 
13. Leaves chartaceous. 
14. Leaves glandular 58. E. zamboangensis 
14. Leaves eglandular 56 . E. palawanemis 
