Presentation during the Bureau of Agricultural Research (BAR) 13th Agriculture and Fisheries Technology Forum and Product Exhibition Seminar Series on August 9, 2017 at BAR Grounds, cor. Visayas Ave., Elliptical Rd., Diliman, Quezon City

1. Do you know the name?
What are these plants/flowers?

2. J. R. SahagunF. B. Aurigue
F. B. Aurigue F. B. Aurigue

3. J. R. Sahagun
F. B. Aurigue
F. B. Aurigue
F. B. Aurigue

4. J. R. SahagunJ. R. Sahagun

5. F. B. Aurigue
J. R. Sahagun

6. The Diversity of Hoya
in the Philippines
Fernando B. Aurigue, M.Sc.
Department of Science & Technology -
Philippine Nuclear Research Institute
Commonwealth Avenue
Diliman, Quezon City
DA-BAR 13th
Agriculture and Fisheries
Technology Forum
9 August 2017

7. What is Hoya?
- a genus of flowering
plants established by
Mr. Robert Brown in
1810
Robert Brown (1773-1858)Robert Brown (1773-1858)
- named after
Mr. Thomas Hoy,
Chief Gardener of the
Duke of
Northumberland at
Scion House, England

8. 200-300 species in the whole world could actually be
500 !
Number of Hoya Species Published

9. Bushy, Viny, or Pendent
Variation in Habit

10. Hoya multiflora Hoya irisae
J. R. Sahagun M. A. Calaramo

11. F. B. Aurigue
F. B. Aurigue M. A. Calaramo
F. B. Aurigue
16.0 mm16.0 mm
21.0 mm21.0 mm

12. U. F. Ferreras
J. R. Sahagun
Hoya diversifoliaHoya diversifolia
F. B. AurigueF. B. Aurigue
10.8 mm10.8 mm

13. D. P. TandangD. P. Tandang
Hoya quisumbingiiHoya quisumbingii
D. P. Tandang

14. Leafless, Shingle-leafed, Opposite, or
Decussate
Variation in Leaves

15. F. B. Aurigue
F. B. Aurigue
Hoya spartioides
c/o N. Macedac/o N. Maceda

16. Hoya imbricata
J. R. Sahagun
J. R. Sahagun J. R. Sahagun
J. B. Bravo

17. Hoya imbricata
W. M. SuarezW. M. Suarez
W. M. SuarezW. M. Suarez
W. M. SuarezW. M. Suarez
10.0 mm10.0 mm

18. Hoya lacunosa
Hoya krohniana
F. B. AurigueF. B. Aurigue
F. B. AurigueF. B. Aurigue
F. B. AurigueF. B. Aurigue
F. B. AurigueF. B. Aurigue
5.0 mm5.0 mm
7.2 mm7.2 mm

19. http://davesgarden.com/guides/pf/showimage/274565/http://davesgarden.com/guides/pf/showimage/274565/
H. lacunosaH. lacunosa

20. Hoya cumingiana
J. R. Sahagun
J. R. Sahagun
13.0 mm13.0 mm

21. Hoya densifolia
J. R. Sahagun
J. R. Sahagun
13.3 mm13.3 mm

22. Miniatures and the Largest
Variation in Flower Size

23. Miniature HoyasMiniature Hoyas
Hoya odetteaeHoya odetteae
Hoya bilobata
Hoya leytensisHoya leytensis
J. B. BravoJ. B. Bravo
J. R. SahagunJ. R. Sahagun
3.6 mm
4.1 mm4.1 mm
F. B. AurigueF. B. Aurigue
4.6 mm4.6 mm

24. Hoya imperialis
J. B. Bravo
A. P. CondeA. P. Conde
10.2 cm10.2 cm

25. Different Color so Different Species
Same Color but Different Species

26. Hoya cembrae
Hoya odorata
J. R. Sahagun
L. L. Co
19.8 mm19.8 mm
18.0 mm18.0 mm

27. Hoya linavergarae
Hoya paziae
J. R. Sahagun
F. B. Aurigue
20.3 mm20.3 mm

28. Hoya linavergarae
F. B. Aurigue
Hoya benvergarae
J. R. Sahagun
from Facebook

29. Hoya benvergarae
Hoya soligamiana
J. R. Sahagun
J. R. Sahagun
14.0 mm14.0 mm
10.8 mm10.8 mm

30. Hoya benguetensis
H. cinnamomifolia
J. R. Sahagun
K. Nilsson
10.0 mm10.0 mm

31. Different Species but Similar Color
Same Species but Different Color

32. Hoya mindorensis
Jorge R. Sahagun
Jorge R. Sahagun
Joven B. Bravo
9.5 mm9.5 mm

33. from Facebook

34. Hoya elmeri
Hoya mindorensis
J. B. Bravo
J. B. Bravo
10.0 mm10.0 mm

35. H. erythrostemma
Hoya mindorensis
J. R. Sahagun
J. R. Sahagun
9.0 mm9.0 mm

36. Hoya alagensis

37. Hoya buotii
F. B. AurigueJ. R. Sahagun
J. R. Sahagun J. R. Sahagun
27.0 mm27.0 mm

38. Dr. Inocencio E. Buot, Jr.
from Facebook

39. Hoya coriacea
J. R. Sahagun J. R. Sahagun
24.9 mm24.9 mm

40. Hoya coriacea ssp. philippinensis
U. F. FerrerasU. F. Ferreras

41. Hoya halconensis
F. B. Aurigue
F. B. Aurigue
26.3 mm26.3 mm

42. Hoya blashernaezii
J. R. Sahagun
G. K. Mendoza
G. K. Mendoza
11.0 mm11.0 mm

43. Hoya siariae
J. R. Sahagun
J. R. Sahagun W. M. Suarez
D. D. Cabactulan
12.0 mm12.0 mm

44. Dr. Simeona “Monina” V. Siar
(1962-2011)

45. Hoya valmayoriana
J. R. Sahagun
14.5 mm14.5 mm

46. Dr. Helen L. Valmayor
L. ChanL. Chan

47. Hoya carnosa
J. R. SahagunJ. B. Bravo
F. B. Aurigue J. B. Bravo
18.6 mm18.6 mm

48. Hoya pubicalyx > Hoya pubicenta
J. R. SahagunJ. R. Sahagun
J. R. SahagunJ. R. Sahagun
18.8 mm18.8 mm

49. G. K. Mendoza
Hoya pubicorolla
A. B. AgillonA. B. Agillon

50. Hoya celata
Hoya celata ?
J. R. Sahagun
J. R. Sahagun
15.0 mm15.0 mm

51. Hoya monetteae

52. Hoya obscura
Hoya unicaHoya unica
Hoya rosarioae
J. R. Sahagun J. R. Sahagun
J. R. SahagunF. B. Aurigue
5.0 mm5.0 mm
4.0 mm4.0 mm
6.0 mm6.0 mm
5.4 mm5.4 mm

53. Hoya obscura
Hoya marvinii Hoya unica
Hoya rosarioae

54. Hoya ciliata
F. B. Aurigue
47.0 mm47.0 mm

55. F. B. Aurigue

56. Hoya madulidii
F. B. AurigueW. M. Suarez
J. R. Sahagun
J. R. Sahagun
16.5 mm16.5 mm

57. F. B. Aurigue
N. Buenaflor

58. Dr. Domingo A. Madulid
from Facebook

59. Hoya
cutis-porcelana
J. R. Sahagun
M. D. DL. De Leon
Hoya deleonii
15.0 mm15.0 mm
17.0 mm17.0 mm

60. Available Technologies
• seed processing, storage and germination
• vegetative propagation, including tissue
culture techniques
• breeding through hybridization or mutation
induction by gamma irradiation
• morphometric analysis of plant parts
• Elliptic Fourier Analysis of plant parts
• chemical analysis of natural compounds

61. Current and Potential Uses
• ornamental plants – propagated plants are
saleable in the local and international markets
with preference on species with larger and
longer-lasting flowers, but rare species or
varieties are expensive
• medicinal plants – some species have been
used by indigenous people or in traditional
medicine
• food plants – for confirmation and research

62. Acknowledgment
DA-BAR
DOST-PNRI
Photographers
Plant Funatics
Plant owners
J. R. Sahagun
J. R. Sahagun
M. D. DL. De Leon

63. Maraming salamat po sa
inyong pagdalo at pakikinig!
fbaurigue@pnri.dost.gov.ph
faurigue@yahoo.com
- Nanding