| ┌1A. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
limb margins marcescentMarcescent: Withering but remaining attached to the stem.
.. 2
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| │ | ┌2A. | Leaf blade abaxialAbaxial: Facing away from the stem of a plant (especially denoting the lower surface of a leaf).
ly glossy with the primary venationVenation: The arrangement of veins in the leaf.
impressed; spadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe.
appendixAppendix: Sterile appendage at the end of a spadix.
clavateClavate: Club-shaped; thicker at the apex than at the base.
cylindric, distinctly thicker than staminate zone; antherAnther: The part of a stamen that contains the pollen.
s with the connective much elevated above the thecaeThecae: One of the lobes of an anther in which pollen is produced.
. Brunei. Sandstones .. 📌Schismatoglottis petri
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| │ | └2B. | Leaf blade abaxialAbaxial: Facing away from the stem of a plant (especially denoting the lower surface of a leaf).
ly matte (or at least not glossy) with the primary venationVenation: The arrangement of veins in the leaf.
not impressed; spadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe.
appendixAppendix: Sterile appendage at the end of a spadix.
cylindric, more or less isodiametric with top of staminate zone; antherAnther: The part of a stamen that contains the pollen.
s pwith the connective not or hardly elevated. Widespread on Borneo and extending to the Riau Archipelago, A variety of substrates .. 📌Schismatoglottis tecturata
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| ├1B. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
limb shedding by deliquescing or degrading into a granular mass .. 3
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| │ | ┌3A. | Leaf blades broadly lanceolateLanceolate: 
, matte medium to matte olive green, adaxially concolorous, or with the mid-rib paler; mid-rib impressed; lithophyteLithophyte: A plant that grows on bare rock or stone.
s not associated with watercourse .. 4
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| │ | │ | ┌4A. | Stem ascending and rooting; leaf blades cuneateCuneate: 
to narrowly rounded at base; petiolePetiole: Leaf stem.
s scabrid with broken paler striations; spadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe.
elongate hourglass-shaped, appendixAppendix: Sterile appendage at the end of a spadix.
clavateClavate: Club-shaped; thicker at the apex than at the base.
, staminate flower zone narrower than the pistilPistil: The female reproductive part of a flower.
late zones and the appendixAppendix: Sterile appendage at the end of a spadix.
; staminate flowers without an expanded collar; the staminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther.
s of the interstice expanding laterally at the onset of staminate anthesisAnthesis: The period during which pollen is presented and/or the stigma is receptive.
. NW Borneo. Limestone .. 📌Schismatoglottis evelyniae
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| │ | │ | └4B. | Stem condensed, leaf blades shallowly cordateCordate: 
; petiolePetiole: Leaf stem.
s smooth; spadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe.
conic-cylindric; appendixAppendix: Sterile appendage at the end of a spadix.
conic; staminate flower zone stout and wider than the rest of the spadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe.
; staminate with a distinctive expanded collar; staminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther.
s of the interstice not expanding. NE Sarawak, Brunei. Sandstones .. 📌Schismatoglottis platystigma
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| │ | ├3B. | Leaf blades narrowly lanceolateLanceolate:
, glossy deep green, often spattered paler green and yellowgreen; mid-rib conspicuously bluntly raised; obligate rheophyteRheophyte: An aquatic plant that lives in fast moving water currents.
s .. 5
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| │ | │ | ┌5A. | SpadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe.
appendixAppendix: Sterile appendage at the end of a spadix.
stoutly clavateClavate: Club-shaped; thicker at the apex than at the base.
; appendixAppendix: Sterile appendage at the end of a spadix.
staminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther.
s not well-defined, the apicesApices: Plural of apex. End forming a point.
almost flat and with a suture in the middle; NW Sarawak. Sandstones .. 📌Schismatoglottis jepomii
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| │ | │ | └5B. | SpadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe.
appendixAppendix: Sterile appendage at the end of a spadix.
only slightly expanded; appendixAppendix: Sterile appendage at the end of a spadix.
staminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther.
s well-defined, the tops convex and smooth; SW Sarawak. Shales .. 📌Schismatoglottis pudenda
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