Key to Piptospatha


Based on Boyce & Wong, 2012 ( Aroideana V35 )

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



1A. Sterile interstice between pistilPistil: The female reproductive part of a flower. late and staminate flower zones well-defined
2A. Stem short, erect; spadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe. thick (width of pistilPistil: The female reproductive part of a flower. late zone: entire length 5 5/18); pistilPistil: The female reproductive part of a flower. late zone green, staminate zone pale yellow; N Borneo (Sarawak: Limbang, Brunei, W Sabah) .. 📌Piptospatha burbidgei
2B. Stem long, repent, spadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe. slender (width of pistilPistil: The female reproductive part of a flower. late zone: whole length 5 3/30), pink; N Kalimantan Tengah .. 📌Piptospatha repens
1B. Sterile interstice absent or very ill-defined .. 3
3A. AntherAnther: The part of a stamen that contains the pollen. connective extended into a pronounced elongate beak; "North Borneo" .. 📌Piptospatha insignis
3B. AntherAnther: The part of a stamen that contains the pollen. connective not so, or if elevated then shortly so and obtuse .. 4
4A. AntherAnther: The part of a stamen that contains the pollen. s pubescentPubescent: With a hairy surface. .. 5
5A. Connective of stamenStamen: The pollen-producing reproductive organ of a flower. swollen, dome-like; S Peninsular Malaysia .. 📌Piptospatha ridleyi
5B. Connective not swollen, flat .. 6
6A. SpatheSpathe: A large sheathing bract enclosing the flower cluster. white; antherAnther: The part of a stamen that contains the pollen. s in closely appressed regularly arranged pairs; leaf blade with conspicuously tessellate tertiary venationVenation: The arrangement of veins in the leaf. on both surfaces; Malay Peninsula and S peninsular Thailand .. 📌Piptospatha perakensis
6B. SpatheSpathe: A large sheathing bract enclosing the flower cluster. pink; antherAnther: The part of a stamen that contains the pollen. s irregularly arranged; leaf blade without tessellate venationVenation: The arrangement of veins in the leaf. , or if present then only very faint and only abaxialAbaxial: Facing away from the stem of a plant (especially denoting the lower surface of a leaf). ly; Borneo .. 7
7A. Robust plants to 25 cm tall with short, erect stems; leaves forming a rosette; leaf blade very narrowly oblongOblong: -ellipticElliptic: , 12-20 cm long, all veinVein: Venation types: A. midrib; B. primary lateral veins; C. interprimaray veins; D. secondary veins; E. collective veins; F. tertiary veins; G. basal ribs; H. basal veins. s parallelParallel: Parallel Venation. pinnatePinnate: Pinnate Venation. ; spadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe. ca. 2 cm long; pistilPistil: The female reproductive part of a flower. late flower zone fertile to the base; fruiting spatheSpathe: A large sheathing bract enclosing the flower cluster. 2.5 cm long and wide; plants of exposed shales; Sarawak: Rejang valley .. 📌Piptospatha marginata
7B. Diminutive plants up to 14 cm tall with decumbent-creeping stems; leaves loosely clustered, or distributed along the stem; leaf blade ellipticElliptic: , 4-6 cm long, tertiary venationVenation: The arrangement of veins in the leaf. abaxialAbaxial: Facing away from the stem of a plant (especially denoting the lower surface of a leaf). ly forming a very faint tessellate reticulum; spadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe. 0.8-1.2 cm long, pistilPistil: The female reproductive part of a flower. late flower zone with 3-5 oblique whorls of staminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther. s at the base; fruiting spatheSpathe: A large sheathing bract enclosing the flower cluster. up 1 cm long and wide; plants of travertine; Kalimantan Timur: Sangkulirang .. 📌Piptospatha manduensis
4B. AntherAnther: The part of a stamen that contains the pollen. s glabrousGlabrous: Smooth. Free from hair or down. .. 8
8A. SpadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe. bullet-shaped, the staminate portion tapering towards the apexApex: End forming a point. ; lower part of staminate zone comprised of larger flowers, that may be sterile, intermixed adjacent to the pistilPistil: The female reproductive part of a flower. s with white staminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther. s; thecaeThecae: One of the lobes of an anther in which pollen is produced. broadly excavated, the excavations of adjacent antherAnther: The part of a stamen that contains the pollen. s forming a butterflyshaped depression; stigmaStigma: The receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower. s bright green; spatheSpathe: A large sheathing bract enclosing the flower cluster. at anthesisAnthesis: The period during which pollen is presented and/or the stigma is receptive. shading proximally to distally from deep olive-green through very pale pink to medium pink, the interior of the spatheSpathe: A large sheathing bract enclosing the flower cluster. tip rostrum with 5-7 conspicuous keels; persistentPersistent: Remaining attached to the plant beyond the usual time of falling. fruiting spatheSpathe: A large sheathing bract enclosing the flower cluster. wide-flared; plants frequently limestone associated; SW Sarawak (? NW Kalimantan) .. 📌Piptospatha viridistigma
8B. SpadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe. cylindrical; staminate flowers uniform throughout zone; thecaeThecae: One of the lobes of an anther in which pollen is produced. longitudinally sulcateSulcate: Furrowed; grooved. with the pores ventral and dorsal to the sulcae; stigmaStigma: The receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower. s pink or dirty whitish. SpatheSpathe: A large sheathing bract enclosing the flower cluster. at anthesisAnthesis: The period during which pollen is presented and/or the stigma is receptive. shading proximally to distally from deep plum purple through medium pink to deep pink, the interior of the spatheSpathe: A large sheathing bract enclosing the flower cluster. tip rostrum with 2-3 conspicuous keels or keels 6 absent. PersistentPersistent: Remaining attached to the plant beyond the usual time of falling. fruiting spatheSpathe: A large sheathing bract enclosing the flower cluster. narrowly obconic; plants of sandstone or granite .. 9
9A. StigmaStigma: The receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower. s mid-deep pink; antherAnther: The part of a stamen that contains the pollen. s with connective flat; spatheSpathe: A large sheathing bract enclosing the flower cluster. tip rostrum almost straight or only weakly reflexed (ca. 45u) relative to spatheSpathe: A large sheathing bract enclosing the flower cluster. axis at anthesisAnthesis: The period during which pollen is presented and/or the stigma is receptive. , inside with 2-3 conspicuous longitudinal keels; plants exclusively of granite; NW Borneo .. 📌Piptospatha elongata
9B. StigmaStigma: The receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower. s dirty whitish; antherAnther: The part of a stamen that contains the pollen. s with a short acute-triangular connective on each side, spatheSpathe: A large sheathing bract enclosing the flower cluster. tip rostrum strongly reflexed (ca. 130u) relative to spatheSpathe: A large sheathing bract enclosing the flower cluster. axis at anthesisAnthesis: The period during which pollen is presented and/or the stigma is receptive. , inside lacking keels, or keels only very vaguely defined; plants exclusively of sandstone; NW Sarawak .. 📌Piptospatha impolita
 


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