Key to Adult Flowering Rhaphidophora in Borneo

Based on Boyce, 2001

Click on 📌 to highlight and compare characteristics.
Click on the line numbers to select characteristics.



1A. Mature leaf laminaLamina: Leaf blade. pinnatePinnate: Pinnate Venation. ly divided .. 2
2A. Flowering plants usually rheophyticRheophytic: An aquatic plant that lives in fast moving water currents. , rarely low-climbing on trees beside torrential streams. Plants always associated with sandy or rocky forest streams .. 📌1. Rhaphidophora beccarii
2B. Flowering plants high-climbing on forest trees. Plants not specifically associated with watercourses .. 📌7. Rhaphidophora korthalsii
1B. Mature leaf laminaLamina: Leaf blade. entire, without or without perforations, but never pinnatePinnate: Pinnate Venation. ly divided .. 3
3A. Geniculum and abaxialAbaxial: Facing away from the stem of a plant (especially denoting the lower surface of a leaf). surface of laminaLamina: Leaf blade. pubescentPubescent: With a hairy surface. .. 4
4A. Flowering on clinging stems. Leaves of mature plants extensively perforateForate: With aperatures or openings. d. Active shoot tips with black mucilage .. .. 📌6. Rhaphidophora foraminifera
4B. Flowering on free lateral stems. Leaves of mature plants lacking or with only with scattered, perforations. Active shoot tips lacking black mucilage .. 📌12. Rhaphidophora puberula
3B. Geniculum and abaxialAbaxial: Facing away from the stem of a plant (especially denoting the lower surface of a leaf). surface of laminaLamina: Leaf blade. glabrousGlabrous: Smooth. Free from hair or down. .. 5
5A. Leaves always shingling, even in flowering individuals; leaf laminaLamina: Leaf blade. s stiffly coriaceousCoriaceous: Resembling or having the texture of leather. , broadly oblongOblong: -ovateOvate: -ellipticElliptic: , S-4S x 6.5-20.5 cm, bright green, slightly to markedly glaucousGlaucous: Covered with a whitish powder or waxy coating. , base truncate-cordateCordate: to broadly cuneateCuneate: . Flowering on clinging shoots .. .. 📌8. Rhaphidophora latevaginata
5B. Leaves spreading in adult and flowering individuals; leaf laminaLamina: Leaf blade. s variously coloured but never glaucousGlaucous: Covered with a whitish powder or waxy coating. . Flowering on free or clinging shoots .. 6
6A. Stems scabrid to asperous. SpatheSpathe: A large sheathing bract enclosing the flower cluster. exterior minutely puberulentPuberulent: Covered in soft, downy hairs. .. .. 📌9. Rhaphidophora lobbii
6B. Stems smooth. SpatheSpathe: A large sheathing bract enclosing the flower cluster. exterior glabrousGlabrous: Smooth. Free from hair or down. .. 7
7A. Clinging stems square or rectangular in cross-section; tips of active stems with netted prophyllProphyll: One of two first leaves to appear on a lateral shoot, usually smaller than the leaves that follow. , cataphyllCataphyll: A reduced, small leaf. Usually used to describe a modified leaf which lacks a blade and in appearance corresponds to a petiole sheath. and petiolar sheath fibre .. .. 📌4. Rhaphidophora elliptica
7B. Clinging stems variously shaped in cross-section, including square or rectangular; tips of active stems without fibres .. 8
8A. SpadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe. stipitateStipitate: Having a stalk or stem. ; leaf laminaLamina: Leaf blade. thickly coriaceousCoriaceous: Resembling or having the texture of leather. .. 📌2. Rhaphidophora conocephala
8B. SpadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe. sessileSessile: Attached directly by its base without a stalk or peduncle. ; leaf laminaLamina: Leaf blade. variously textured but never thickly coriaceousCoriaceous: Resembling or having the texture of leather. .. 9
9A. Inflorescences two, three or more together, each subtendSubtend: (of a bract) extend under (a flower) so as to support or enfold it. ed by a prominent chartaceous prophyllProphyll: One of two first leaves to appear on a lateral shoot, usually smaller than the leaves that follow. and one or more chartaceous cataphyllCataphyll: A reduced, small leaf. Usually used to describe a modified leaf which lacks a blade and in appearance corresponds to a petiole sheath. ; leaf laminaLamina: Leaf blade. oblongOblong: -lanceolateLanceolate: or oblongOblong: -ellipticElliptic: , entire to slightly perforateForate: With aperatures or openings. d, glabrousGlabrous: Smooth. Free from hair or down. .. 📌10. Rhaphidophora megasperma
9B. Inflorescences almost always solitary, if two together then inflorescences not subtendSubtend: (of a bract) extend under (a flower) so as to support or enfold it. ed by prominent chartaceous prophyllProphyll: One of two first leaves to appear on a lateral shoot, usually smaller than the leaves that follow. s and cataphyllCataphyll: A reduced, small leaf. Usually used to describe a modified leaf which lacks a blade and in appearance corresponds to a petiole sheath. s; leaf laminaLamina: Leaf blade. variously shaped and almost never perforateForate: With aperatures or openings. d, if perforateForate: With aperatures or openings. d then apicalApical: Of, relating to, or denoting an apex. geniculum and abaxialAbaxial: Facing away from the stem of a plant (especially denoting the lower surface of a leaf). surface of laminaLamina: Leaf blade. pubescentPubescent: With a hairy surface. .. 10
10A. Clinging stems rectangular in cross-section .. 11
11A. LeaflaminaLamina: Leaf blade. lanceolateLanceolate: -ellipticElliptic: to falcateFalcate: Curved like a sickle; hooked. -lanceolateLanceolate: , 4.5-32 x 1.75-8.5 cm. SpadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe. cylindric to weakly clavateClavate: Club-shaped; thicker at the apex than at the base. -cylindrical, 3-6 cm long .. 📌13. Rhaphidophora sylvestris
11B. Leaf laminaLamina: Leaf blade. narrowly ellipticElliptic: to narrowly ellipticElliptic: -oblongOblong: , 20-29 x 4.5-7 cm. SpadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe. cylindrical, c. 5 x 1 cm .. 📌5. Rhaphidophora elliptifolia
10B. Clinging stems more-or-less tereteTerete: Cylindrical or slightly tapering, and without substantial furrows or ridges. in cross-section .. 12
12A. Leaf laminaLamina: Leaf blade. narrowly falcateFalcate: Curved like a sickle; hooked. -ellipticElliptic: to falcateFalcate: Curved like a sickle; hooked. -lanceolateLanceolate: or falcateFalcate: Curved like a sickle; hooked. oblanceolateLanceolate: ,2.5-16 x 1.2-3 cm, drying uniformly pale strawcoloured. SpadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe. slender cylindrical, 2.5-7 cm long .. 📌11. Rhaphidophora minor
12B. Leaf laminaLamina: Leaf blade. subfalcateFalcate: Curved like a sickle; hooked. -lanceolateLanceolate: or oblongOblong: -ellipticElliptic: , oblique, 10-19.5 x 2.5-6.5 cm, drying very dark brown. SpadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe. cylindrical-obtuse,3-10 x 1 cm (fruiting specimen only) .. 📌3. Rhaphidophora cylindrosperma
 


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