| ┌1A. | Tuber rhizomatous .. 2
|
| │ | ┌2A. | 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.
massively conic-cylindric, more than 1/2 to subequal to the spatheSpathe: A large sheathing bract enclosing the flower cluster.
limb .. 📌Arum concinnatum
|
| │ | ├2B. | 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.
+/- slender-clavateClavate: Club-shaped; thicker at the apex than at the base.
, 1/4-1/2 length of the spatheSpathe: A large sheathing bract enclosing the flower cluster.
limb .. 3
|
| │ | │ | ┌3A. | Staminate flowers yellow prior to anthesisAnthesis: The period during which pollen is presented and/or the stigma is receptive.
; staminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther.
s and pistillodePistillode: A sterile vestigial pistil remaining in a staminate flower.
s yellow .. 📌Arum italicum
|
| │ | │ | ├3B. | Staminate flowers purple prior to anthesisAnthesis: The period during which pollen is presented and/or the stigma is receptive.
; staminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther.
s and pistillodePistillode: A sterile vestigial pistil remaining in a staminate flower.
s purple .. 4
|
| │ | │ | │ | ┌4A. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
limb pale green ? stained pale purple-green; leaves weakly hastateHastate: 
.. 📌Arum byzantinum
|
| │ | │ | │ | └4B. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
limb greenish white; leaves sagittateSagittate: 
-hastateHastate:
.. 📌Arum maculatum
|
| ├1B. | Tuber discoid .. 5
|
| │ | ┌5A. | PistillodePistillode: A sterile vestigial pistil remaining in a staminate flower.
s and/or staminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther.
s present .. 6
|
| │ | │ | ┌6A. | Plant flowering in the autumn; staminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther.
s present, pistillodePistillode: A sterile vestigial pistil remaining in a staminate flower.
s absent .. 📌Arum pictum
|
| │ | │ | ├6B. | Plant flowering in the spring; staminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther.
s and pistillodePistillode: A sterile vestigial pistil remaining in a staminate flower.
s present .. 7
|
| │ | │ | │ | ┌7A. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
limb interior distinctly blotched and spotted purple .. 📌Arum dioscoridis
|
| │ | │ | │ | ├7B. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
limb interior +/- unicolorous .. 8
|
| │ | │ | │ | │ | ┌8A. | StaminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther.
s and pistillodePistillode: A sterile vestigial pistil remaining in a staminate flower.
s subulate .. 9
|
| │ | │ | │ | │ | │ | ┌9A. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
limb ellipticElliptic: 
-ovateOvate: 
; 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.
, long-stipitateStipitate: Having a stalk or stem.
, c. 1/2 spatheSpathe: A large sheathing bract enclosing the flower cluster.
length .. 📌Arum nigrum
|
| │ | │ | │ | │ | │ | └9B. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
limb lanceolateLanceolate: 
; 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 cylindrical, shortly stipitateStipitate: Having a stalk or stem.
, more than A to subequal to spatheSpathe: A large sheathing bract enclosing the flower cluster.
limb .. 📌Arum palaestinum
|
| │ | │ | │ | │ | ├8B. | StaminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther.
s and pistillodePistillode: A sterile vestigial pistil remaining in a staminate flower.
s filiform or aristate .. 10
|
| │ | │ | │ | │ | │ | ┌10A. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
tube interior distinctly bicolored, purple above, pale green to white below .. 11
|
| │ | │ | │ | │ | │ | │ | ┌11A. | 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.
strongly clavateClavate: Club-shaped; thicker at the apex than at the base.
, inflorescence sweetly scented .. 📌Arum gratum
|
| │ | │ | │ | │ | │ | │ | ├11B. | 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.
stout to slender-cylindric, inflorescence foetid .. 12
|
| │ | │ | │ | │ | │ | │ | │ | ┌12A. | 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.
stout-cylindric, subequal to spatheSpathe: A large sheathing bract enclosing the flower cluster.
limb .. 📌Arum elongatum subsp. elongatum
|
| │ | │ | │ | │ | │ | │ | │ | ├12B. | 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.
slender-cylindric, up to 3/4 as long as the spatheSpathe: A large sheathing bract enclosing the flower cluster.
limb 13
|
| │ | │ | │ | │ | │ | │ | │ | │ | ┌13A. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
limb interior pale green suffused pale to mid-purple .. 14
|
| │ | │ | │ | │ | │ | │ | │ | │ | │ | ┌14A. | Ovaries stained purple apicalApical: Of, relating to, or denoting an apex.
ly, spatheSpathe: A large sheathing bract enclosing the flower cluster.
limb evenly suffused pale purple; staminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther.
s in 2 whorls, pistillodePistillode: A sterile vestigial pistil remaining in a staminate flower.
s in 3-4 whorls .. 📌Arum orientale
|
| │ | │ | │ | │ | │ | │ | │ | │ | │ | └14B. | Ovaries concolorous pale green, spatheSpathe: A large sheathing bract enclosing the flower cluster.
limb margins and apexApex: End forming a point.
midgreen, centre purple; staminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther.
s in 3-4 whorls, pistillodePistillode: A sterile vestigial pistil remaining in a staminate flower.
s in 1-2 whorls .. 📌Arum apulum
|
| │ | │ | │ | │ | │ | │ | │ | │ | ├13B. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
limb interior rosy or crimson .. 15
|
| │ | │ | │ | │ | │ | │ | │ | │ | │ | ┌15A. | Plant robust; spatheSpathe: A large sheathing bract enclosing the flower cluster.
limb rosy .. 📌Arum cyrenaicum
|
| │ | │ | │ | │ | │ | │ | │ | │ | │ | └15B. | Plant delicate; spatheSpathe: A large sheathing bract enclosing the flower cluster.
limb crimson .. 📌Arum elongatum subsp. alpinariae
|
| │ | │ | │ | │ | │ | ├10B. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
tube interior +/- unicolorous .. 16
|
| │ | │ | │ | │ | │ | │ | ┌16A. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
tuber interior greenish white, sometimes flushed pale purple above and along the margins .. 17
|
| │ | │ | │ | │ | │ | │ | │ | ┌17A. | Inflorescence borne above the foliage .. 18
|
| │ | │ | │ | │ | │ | │ | │ | │ | ┌18A. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
limb ellipticElliptic:
; 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.
long-stipitateStipitate: Having a stalk or stem.
, clavateClavate: Club-shaped; thicker at the apex than at the base.
.. 📌Arum alpinum
|
| │ | │ | │ | │ | │ | │ | │ | │ | ├18B. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
limb lanceolateLanceolate:
to linearLinear: 
-lanceolateLanceolate:
; 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.
short-stipitateStipitate: Having a stalk or stem.
or sessileSessile: Attached directly by its base without a stalk or peduncle.
, cylindrical .. 19
|
| │ | │ | │ | │ | │ | │ | │ | │ | │ | ┌19A. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
limb interior mid-green .. 📌Arum korolkowii
|
| │ | │ | │ | │ | │ | │ | │ | │ | │ | ├19B. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
limb interior purple or, rarely, greenish white with a thin purple border .. 20
|
| │ | │ | │ | │ | │ | │ | │ | │ | │ | │ | ┌20A. | 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.
slender-cylindric, tapering basalBasal: Forming or belonging to a bottom layer or base.
ly, sessileSessile: Attached directly by its base without a stalk or peduncle.
; pistillodePistillode: A sterile vestigial pistil remaining in a staminate flower.
and staminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther.
bases verrucate, purple .. 📌Arum jacquemontii
|
| │ | │ | │ | │ | │ | │ | │ | │ | │ | │ | └20B. | 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.
conic-cylindric, sometimes massively so; pistillodePistillode: A sterile vestigial pistil remaining in a staminate flower.
and staminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther.
bases +/- smooth, pale green to cream .. 📌Arum rupicola
|
| │ | │ | │ | │ | │ | │ | ├16B. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
tube interior deep purple .. 21
|
| │ | │ | │ | │ | │ | │ | │ | ┌21A. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
limb deep purple .. 📌Arum purpureospathum
|
| │ | │ | │ | │ | │ | │ | │ | ├21B. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
limb pale green .. 22
|
| │ | │ | │ | │ | │ | │ | │ | │ | ┌22A. | Inflorescence borne below the foliage; spatheSpathe: A large sheathing bract enclosing the flower cluster.
limb with a 1-1.5 mm wide purple border; leaves with basalBasal: Forming or belonging to a bottom layer or base.
lobes more than a 1/3 as long as laminaLamina: Leaf blade.
.. 📌Arum hygrophilum
|
| │ | │ | │ | │ | │ | │ | │ | │ | └22B. | Inflorescence borne above the foliage; spatheSpathe: A large sheathing bract enclosing the flower cluster.
limb with a 2.5-3 mm wide purple border; leaves with basalBasal: Forming or belonging to a bottom layer or base.
lobes less than a 1/4 as long as laminaLamina: Leaf blade.
.. 📌Arum euxinum
|
| ├17B. | Inflorescence borne below the foliage .. 23
|
| │ | ┌23A. | 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.
very slender, subequal to longer than the spatheSpathe: A large sheathing bract enclosing the flower cluster.
limb .. 📌Arum lucanum
|
| │ | ├23B. | 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.
stout, shorter than the spatheSpathe: A large sheathing bract enclosing the flower cluster.
limb .. 24
|
| │ | │ | ┌24A. | Leaves c. 2/3 as broad as long; spatheSpathe: A large sheathing bract enclosing the flower cluster.
limb interior purple, exterior pale green; 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.
purple .. 📌Arum balansanum
|
| │ | │ | └24B. | Leaves c. 1/4 as broad as long; spatheSpathe: A large sheathing bract enclosing the flower cluster.
limb interior and exterior pale greenish white; 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.
pale brown .. 📌Arum hainesii
|
| ├5B. | PistillodePistillode: A sterile vestigial pistil remaining in a staminate flower.
s and staminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther.
s absent .. 25
|
| │ | ┌25A. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
cream to pale yellow, limb reflexing at maturity; 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.
mid to dark yellow, sweetly scented .. 📌Arum creticum
|
| │ | └25B. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
white, limb erect and cucculate at maturity; 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.
deep purple, scentless .. 📌Arum idaeum
|
