Hoya Structural Parts PHOTOS

Hoya Structural Parts in Sequence

with Photos

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• Plant to bush (pg 1)
• Plant dangling (pg 1)
• Square stem (pg 1)
• Leaf nerves palmate (pg 1)
• Leaf nerves plinerved (pg 2)
• Leaf nerves anastomosing (pg 2)
• Leaf blade imbricate (pg 2)
• Leaf blade pressed to the substrate (pg 2)
• Leaf nerves lighter color than the blade (pg 3)
• Leaf nerves darker then the surface (pg 3)
• Leaf terete (pg 3)
• Leaf blade ovate to obcordate (pg 3)
• Leaf blade long, enervis, dorsal concave (pg 4)
• Leaf blade thick (drought resistant) (pg 4)
• Leaf blade long, enervis dorsal convex (pg 4)
• Leaf blade 10X longer than wide (pg 5)
• Leaf blade 5X-9X longer than wide (pg 5)
• Leaves with indumentum on both surfaces (pg 5)
• Leaf blade with indumentum on lower surface (pg 5)
• Leaf secondary nerves perpendicular to the midrib (pg 6)
• Leaves more than 2 at a node (pg 6)
• Leaf one at a node, one aborts occasionally (pg 6)
• Leaves dimorphic of two types (round & elliptic) (pg 7)
• Leaf with no (petiole (sessile) or nearly so (pg 7)
• Leaf base cordate (pg 7)
• Leaf base cuneate (pg 8) 
• Leaf edge undulate (pg 8) 
• Leaf margins recurved or involuted (pg 9) 
• Leaf edge dark colored (pg 9)
• Leaf apex acuminate (pg 9)
• Leaf apex mucronate (pg 9)
• Leaf apex truncate to emarginate (pg 10)
• Petiole grooved above (pg 10)
• Peduncles multiple (pg 11)
• Peduncle none Sessile (pg 11)
• Peduncles 15 cm long or more (pg 11)
• Pedicels curved of varying lengths (pg 12)
• Pedicels with indumentum (pg 12) 
• Sepals round or nearly so (pg 12)
• Sepals linear (pg 12)
• Sepals ciliate (pg 13)
• Sepals extend to the corolla sinuses or beyond (pg 13) 
• Sepals with ligulate ciliate extensions around the ovaries (pg 13) 
• Ovaries with hair cells (pg 13) 
• Ovary apex modified (lip like) (pg 13) 
• Corolla urceolate (pg 14) 
• Corolla campanulate (pg 14)
• Corolla revolute (pg 14) 
• Corolla reflexed (pg 14) 
• Corolla rotate (pg 14)  
• Corolla lobes cupped forward claw like (pg 15)
• Corolla inside glabrous (pg 15) 
• Corolla both surfaces glabrous (pg 15) 
• Corolla both surfaces pubescent (pg 15)
• Corolla dorsal surface pubescent margined (pg 15) 
• Corolla inner surface edged with stellate hairs (pg 16) 
• Basal inside part covered by long, slender, woolly hairs (pg 16)
• Corolla hirsute ring under corona (pg 16)
• Corolla not deeply lobed and inner lobes at the sinus, glandular: corolla totally glabrous to very glabrous, lobes acute but towards the lobe apexes exhibiting a small area of villoseness (pg 16)
• Corolla white corona red (pg 16)
• Corona sunken into corolla at base (pg 17) 
• Hoya myanmarica P. T. Li, distinctly veined corolla (pg 17) 
• Hoya vacciniiflora O. Schwartz. In our species the structure of the corona scales is noteworthy. Their edges are bent sideways., and on the radial sides they bend down at a right angle to the outside, so that they then spread out horizontally from each other. The pattern of each scale is then exactly that of a segment of 72°. Since the edges of the neighboring scales touch each other, there develops a flat plate-like corona ring around the gynostegium (pg 17)
• Corona outer lobe long and narrow (pg 17) 
• Anthers very long exceeding the coronal inner lobe (pg 17)
• Corolla center dorsal with pentagonal thickening (pg 17) 
• Corona outer lobe bilobed (pg 17)
  Section Acanthostemma
• Corona with skirt below (pg 18)
  Section Otostemma
• Corona with skirt and bilobes (pg 18)
  Characters of two sections
• Hoya incurvula Schlechter 1916 corona apex (i.e. back) incurved obtuse (pg 18)
• Corona outer lobe vertical. Channel exposed all the way (pg 18) 
• Corona outer lobe raised (pg 18) 
• Coronal outer lobe horizontal (pg 19)
• Coronal outer lobe turned down (pg 19)
• Coronal outer lobe recurved (pg 19)
• Coronal outer lobe acute (pg 19)
• Coronal outer lobe rounded, obtuse (pg 19) 
• Coronal outer lobe truncate (pg 20)
• Coronal outer lobe emarginate (pg 20)
• Coronal outer lobe inflexed (pg 20)
• Coronal outer lobe with flaps turned inward (pg 20)
• Coronal dorsal rounded convex (pg 20)
• Coronal dorsal horizontal (pg 21) 
• Coronal dorsal concave (pg 21) 
• Coronal outer lobe dorsal channeled (pg 21) 
• Corona lobe dorsal keeled (pg 21) 
• Coronal dorsal with two keels (pg 21) 
• Corona dorsal sway (U) shaped (pg 22) 
• Corona dorsal shallow cupped. Boat shaped (pg 22) 
• Corona dorsal with umbo forward (pg 22) 
• Corona dorsal edges sharp (pg 22) 
• Coronal outer lobe exceeds corolla sinuses (pg 22) 
• Coronal lobes with side shelves extending to inner lobe apices (pg 23) 
• Corona inner lobe terete (pg 23) 
• Corona inner lobe spatulate (pg 23) 
• Corona inner lobe dentate (pg 23) 
• Coronal inner lobe erect with short spur (pg 23)
• Corona inner lobe keeled (pg 24)
• Coronal inner lobe clavate below (pg 24) 
• Corona inner lobe with crest (pg 24)  
• Hoya leembruggeniana Koorders. Corona on the bottom channeled, above with 2 straight erect (not hooked) segments (pg 24) 
• Corona with two projections pointing centrally (pg 24) 
• Corona inner lobe blunt (square end) (pg 24) 
• Coronal inner lobe blunt no extension (pg 24) 
• Corona ventral with two round spurs pointing apically (pg 25) 
• Corona ventral with (two) flat pads on channel of each lobe (pg 25) 
• Coronal inner lobe reaches the center (pg 25) 
• Corona inner lobe above outer lobe (pg 25) 
• Corona inner lobe not free of anther (pg 26) 
• Corona inner lobe channeled (pg 26) 
• Coronal inner lobe hollow etc. (pg 26) 
• Corona with annulus below (pg 26) 
• Coronal ventral folded out forming a “V” (pg 26) 
• Corona ventral hirsute around central column (pg 27) 
• Corona ventral with swollen protrusions at column base (pg 27) 
• Corona ventral with punctate surface around column (pg 27) 
• Corona ventral lobes closely appressed to the column (pg 27) 
• Coronal ventral with pre skirt (pg 27) 
• Coronal lobes not sulcate on surfaces (pg 28) 
• Coronal lobes nearly vertical (pg 28) 
• Hoya lasigynostegia P. T. Li, gynostegia (tubes like threads) pubescent (pg 28) 
• Anthers exceed inner lobe (pg 28) 
• Anthers exposed but corona inner lobe higher (pg 28) 
• Anthers very long greatly exceeding inner coronal lobe (pg 29)
• Anthers creped (page 29) 
• Anther wing apex square ended (pg 29)
• Anther wings with two apices U shaped apex (pg 29)
• Anther wings with three apices (pg 29) 
• Anther wings with thick sides end rounded (pg 30)
• Anther wings apex acute extended (pg 30) 
• Style capitate or ornate (pg 30) 
• Style cone shaped (pg 30) 
• Flower cluster globose (pg 31) 
• Flower cluster number of flowers (pg 31) 
• Pollinia lengths and widths (pg 31) 
• Translator type (ls)  (pg 31) 
• Translator linear but modified a little beyond pollinia end. l/cw or l/o (pg 31) 
• Translators fiddle shaped more like drumsticks (fb) (pg 32)
• Translators perpendicular to the retinaculum (p) (pg 32) 
• Translators delta shaped with flat top (d) (pg 32) 
• Translators end squared off (t) (pg 33) 
• Caudicle a small ball (o) (pg 33) 
• Caudicle with wide end funnel shaped (cw) (pg 33) 
• Leaf nerve angle (pg 33) 
• Coronal lobe lengths (pg 33) 
• Style crown ornate with fingers (pg 34) 
• Stems with no leaves normally (pg 34) 
• Corolla red, corona white Hoya imperialis (pg 34) 
• Corolla and corona white (pg 34) 
• Corona and corolla red tones (pg 35) 
• Corona and corolla yellow tones (pg 35) 
• Corona with bilobes turner under (pg 35) 
• Corona ventral lobes projected to column like feet (pg 35) 
• Corolla with ligules at the sinuses (pg 36)