Leaves Top and Bottom The following mostly consist of leaves I have pressed and dried from plants of my collection. Grown from collected hoya material grown in Fresno, California. In the dried state the nerves are usually more visible. I scanned the leaves top and bottom along with a inch and millimeter scale for comparison. I have measured the length and widest portion of the leaves, the length and diameter of the petiole and the angle the leaf nerve makes with the midrib.

1

Hoya andalensis Kloppenburg 2005 Hoya sp. IPPS 1775

Blade 5.6 x 1.7-2.1 cm. Petiole 0.3 x 0.1 cm. Nerve 32- 36°.

2

Hoya apoensis Kloppenburg & Siar 2010

Blade 4.7-5.1 x 1.7-2 cm. Petiole 0.5 x 0.1 cm. grooved. Nerves 36- 42°.

3

Hoya australis "Santos #1" Top view

Blade 10.8 x 7 cm. Pedicel looks grooved 2.2 x 0.2 cm. Nerves ca. 23°.

4

Bottom view

5

Hoya australis "Santos #2" Top view

Blade 12.4 x 9.6 cm. Petiole curved, not grooved 4.4 x 0.2 cm. Nerves ca. 34°.

6

Bottom View

7

Hoya bilobata Schlechter 1906

Blade 1.6 x 1.2 cm. Petiole grooved 0.5 x 0.1 cm. Nerves 70°.

8

Hoya blashernaezii Kloppenburg 1999 Type 97093 (BISH) iso CAHUP, from Catanduanes Is. Philippines

Blade 10.5 x 2.5 cm. Petiole1.7 x 0.3 cm. Nerve 32°.

9

Hoya brevialata Kleijn & Donkelaar 2001

From the type description Leaves suborbicular to elliptic, light-green, yellowish to bright red when very exposed. Petioles 0.5-1 cm. long. Nerves nearly obscure in living material. Actually palmate with 5-7 nerves per side, branched and rebranched. Petioles are grooved above.

Blade 4.6 - 5.2 x 3.0-3.4 cm. Petiole curved 0.5 x 0.3 cm, Nerves 46°.

10

11

Hoya buotii Kloppenburg 2002

From the type description. No description only a photo of the foliage. The typical leaf is elliptic-lanceolate with a long acuminate apex, base narrowly rounded. Blade is 10 cm. long x 2.5 cm. wide near the base. The petiole is grooved above, 1 cm. long x 0.09 cm. in diameter. Nerves are pinnate 7 or so on each side, at from a 30º to nearly perpendicular angle to the midrib; anastomosing.

12

Hoya cf. burtoniae Kloppenburg This is not that species but claimed to be so by Burton.

Blade 5.4 x 1.8-2.2 cm. Petiole 0.8 x 0.3. Nerves 37°.

13

Hoya camphorifolia Warburg 1904

Blade 8.4 x 3 – 3.4 cm. Petiole 1.6 x 0.3 cm. Nerves 21°.

14

Hoya carnosa R. Brown 1802

Blade 8.5- 9 x 4-4.3 cm. Petiole 1.5- 1.7 x 0.1 cm. Nerves 48°.

15

Hoya davidcummingii Kloppenburg 1995

Blade 5.8 – 7.4 x 2.0- 2.5 cm. Petiole 1.2 x 0.2 cm. Nerves 45°.

16

Hoya densifolia Turczaninow 1848

Blade 6.0 – 6.5 x 2.9- 3.0 cm. Petiole 0.1 x 0.1 cm. Nerves 42°.

17

Hoya dolichosparte Schlechter 1916

Blade 10.4 x 10.6 x 5- 5.2 cm. Petiole 1.1 – 1.5 x 0.5 cm. looks grooved. Nerves 22-30°.

18

Hoya finlaysonii Wight 1834

Blade 10.5 -11 x 4.4 – 3.7 cm. Petiole 1.2-2.5 x 0.2 cm. Nerves 33°. 19

Hoya golamcoiana Kloppenburg 1991 Type 41903 CAHUP. From El Nido rest area, Palawan, Philippines

Blade 4.6 x 2.7 cm. Petiole 0.5 x 0.3 cm. Nerve 58°

20

Hoya heuschkeliana Kloppenburg 1989

Blade 4.2 x 2.5 cm. Petiole curved 0.6 x 0.1 cm. Nerves 50°.

21

Hoya juannguoana Kloppenburg Dorsal surface

22

Ventral surface

Blade 11.7 – 15.7 x 5- 5.5 cm. Petiole grooved 1.5 x 0.2 cm. Nerves 30-34°.

23

Hoya kerrii Craib 1911

Blade 9-10.2 x 6.6 – 7.6 cm. Petiole 2 x 0.4 cm. Nerves 35-42 °.

24

Hoya lacunosa Blume 1826 Type 1063, native of Java. Indonesia

Blade 4.0 x 2-2.5 cm. Petiole 0.5 x 0.2 cm. Nerve 90° +/-.

25

Hoya leytensis Elmer ex Burton 1938

Blade 3.5 – 4 x 1.5 – 1.6 cm. Petiole grooved 0.7 x 0.1 cm. Nerves 26°

26

Two types one elliptic blade 3.8 -5.6 x 1.8-2 cm. & one ovate 2.5 – 4 x 1.6 cm Nerves

27

Hoya meliflua var. fraterna Green Top view

28

Bottom view

Blade 16 x 4.6 cm. Petiole 2.2-2.3 x 0.6 cm. Nerves 42-47°.

29

Hoya merrillii Schlechter 1904 Misidentified !

Blade 10.5– 2.1 x 8-8.4 cm. Petiole 1.6 x 0.5 cm. Nerves 30°.

30

Hoya micrantha Hooker f.

Blade 5.6-6.5 x 2 cm. Petiole 0.6 x 0.2 cm. Nerve 30°.

31

Hoya mindorensis Schlechter 1906

Blade 8.0-9.8 x 3.1 cm. Petiole 1.4 x 0.2 cm. Nerve 50-53°

32

Hoya myrmecopa Kleijn & Donklaar

Blade 5.9-6.3 x 2.5 cm. Petiole 1.1 x 0.2 cm. Nerve anastomosing 75-120°.

33

Hoya neoebudica Guillaumin 1937 Type Ambrym, Vanuatu (Wiluit) elevation 200m

Blade 8.6 x 3.4 cm. Petiole 1.6 x 0.25 cm.

34

Hoya nicholsoniae Mueller 1866

Blade 8.8-9.3 x 3-3.9 cm. Petiole 1.5 x 0.2 cm. Nerve 20°.

35

Clone IML 541, yup[e is Dallachy, s. n. Rockingham Bay, Queensland Australia

Blade 9 x 4 cm. Petiole 1.7 x 0.3 cm. Nerve 15-20°.

36

Hoya obovata Decaisne 1844

Blade 7.5 x 6.5 cm. Petiole grooved 1.9 x 0.2 cm. Nerve 54-58°

37

Hoya obscura Elmer (ex Merrill) ex Burton 1986 Type Elmer 16719 (UC) A.

38

Hoya pachyclada Kerr

Blade 5.1-8.1 x 3.1-4.8 cm. Petiole 0.6-2.1 x 0.4 CM. Nerve 37°

39

Hoya pallilimba Kleijn & Donklaar

Blade 3.8-4.6 x 2.8 cm. Petiole 0.3 x 0.3 cm. Nerve 45°.

40

Hoya pauciflora Wight 1848

Blade 7.5-8 x 1- 1.1 cm. Petiole 0.7 x 0.1 cm. Nerve 12°.

41

Hoya pimenteliana Kloppenburg

Blade 5.6-5.9 x 2-2.2 cm. Petiole 0.5 x 0.1 cm. Nerve 32°.

42

Hoya plicata King & Gamble

Blade 7-7.9 x 2.9 cm. Petiole grooved 1.4 x 0.2 cm. Nerve 45°.

43

Hoya puber Blume 1826

Blade 3.7-4.0 x 2.5 cm. Petiole 0.5 x 0.1 cm. Nerve 34-44°

44

Hoya pubicalyx Merrill 1918

Blade 14.1-15.1 x 4.5 cm. Petiole 1.5 x 0.2 cm. Nerve 32-35°.

45

Hoya pusilla Rintz 1978 ?

Blade 5.9-6.2 x 2-2.5 cm. Petiole 0.8 x 0.1 cm. Nerve 52°.

46

Hoya recurvula Kloppenburg

Blade 7.0 – 12.0 x 1.5- 2.5 cm. Petiole 3.8 x 0.3 cm. Nerve 23°.

47

Hoya recurvula Kloppenburg 2000 Type 81009 (UC)

Blade 10.3 x 3.3 cm. Petiole 2.5 x 0.3 cm. Nerve 23°

48

Hoya ridleyi King & Gamble 1903 Incorrectly identified as Hoya pallida Lindley 1826 Synonym H. parasitica, acuta etc.

Blade 10-14.4 x 3.5-4.1 cm. Petiole grooved 2.5 x 0.5 cm. Nerve basal 42°, upper 25°.

49

Hoya rigida King & Gamble 1908 Dorsal surface.

50

Ventral surface.

Blade 14.2 x 5-5.1 cm. Petiole 4.8 x 0.7 cm. Nerve 17-27° 51

Hoya shephardell Hort.

Blade 9.5-12.0 cm. Petiole 1 x 0.3 cm. Nerves anastomosing 36-53°.

52

Hoya stoneae Kloppenburg & Siar 2006

Blade 6.1 – 7.1 x 1.6 – 2 cm. Petiole 0.8 x 0.2 cm. Nerves 19° 53

Hoya sp. abouata From Sak Die Sir Nursery, Thailand Dorsal surface

54

Ventral surface.

Blade 10.5 x 2.8 cm. Petiole 1.2 x0.2 cm. Nerve 44°.

55

Hoya sp. Bali Botanical Garden Collected in 1994, Bali Indonesia

Blade 13.0 x 6.6 cm. Petiole curved twisted, 2-2.5 x 0.5 cm. Nerve 35°.

56

Hoya sp. DH 54 Palawan, Philippines

Blade 8.2-12.0 x 1.7-3.2 cm. Petiole,1.1 x 0.1 cm. Nerve 22-30°.

57

Hoya sp. IPPS 18888

Blade 3.9-6.1 x 2.9 cm. Petiole 0.6-0.7 x 0.1 0.2 cm. Nerves 37-52°.

58

Hoya sp. lacunosa Blume in trade as lacunosa but another species.

Blade 4.7 – 6 x 1.6 cm. Petiole 0.6 x 0.1 cm. Nerves 27°.

59

Hoya sp. Mt. Apo Acanthostemma

Blade 3.2-3.5 x 1.7 cm. Petiole 0.5 x 0.1 cm. Nerves 40-48°

60

Hoya sp. Nagtabon Hill, Palawan

Blade 8.5-9.2 x 3-3.5 cm. Petiole 1.3 x 0.2 cm. Nerves 33-36°.

61

Hoya sp. obscura Elmer ex Merrill ex Burton 1906 Another mislabeled species ?

Dorsal surface. Blade 6.8 x 3.8 cm. Petiole 2 x 0.2 cm. Nerve 14°.

62

Ventral surface:

63

Hoya sp. triplinerved

Blade 10.5-12.2 x 3.3-4 cm. Petiole 1.4—2.4 x 0.5 cm. Nerves 23-26°.

64

Hoya sp. Road back to Bada, Sulawesi

Blade 6.4- 6.5 x 2.6 cm. Petiole 0.9-0.1 cm. Nerves 28-32°.

65

Hoya sp. Simas Orchids, Jakarta, Indonesia

Blade 10.6 x 4 cm. Petiole 2.6 x 0.3 cm. Nerves 32°.

66

Hoya vitellenioides Brink f. Dorsal

67

Ventral surface

Blade 9.8-13.7 x 5.1-5.5 cm. Petiole 0.9 x 0.5 cm. Nerves anastomosing 37-51°.

68

Hoya wibergiae Kloppenburg Dorsal surface

69

Ventral surface

Blade 14-14.5 x 4.5 cm. Petiole 0.7 x 0.4 cm. Nerves 16-20°

70

Hoya wayetii Kloppenburg

Blade 7.6-8.8 x 1.5 cm. Petiole 1.2 x 0.2 cm. Nerves 25-49° narrower near base.

71