TABLE 1 in A new Amorphophallus (Araceae) species from Thailand and an updated key to the Longituberosus and Saraburiensis subclades

TABLE 1. Morphological comparison of Amorphophallus bantae and closely related species.
A. bantaeA. tenuistylisA. longituberosusA. albispathusA. tenuispadixPeduncle length28–34 cm64–88 cm10–76 cm20–40 cm11–29 cmPeduncle exteriorlight green with purple vertical stripes and small whitish mottlesolive green with small grayish mottlesgray or light pink with green or brown mottles and (often) dark vertical stripesuniformly pink or olivegreen grading up to pinklight brown to pinkish with few to many dark elongate mottlesSpadix length13–15 cm24–48 cm5.0–15.5 cm8–13 cm5.5–12.0 cmSpadix-spathe ratiospadix as long or shorter than spathespadix longer than spathespadix as long or shorter than spathespadix shorter than spathespadix as long or shorter than spatheAppendix size5.5–6.5 cm long, as broad or narrower than staminate zone16–30 cm long, as broad or narrower than staminate zone2.5–8.0 cm long, as broad or broader than staminate zone, never narrower2–8 cm long, much broader than staminate zone1.5–4.0 cm long, much broader than staminate zoneAppendix colorpurplish-brownreddish-purplewhitish-beigewhitish-beigewhitish-beigeSpathe length14–16 cm19–40 cm5–20 cm6–14 cm5–13 cmSpathe shapeellipticlanceolateelliptic to elongate triangulartriangular-ovateelliptic to lanceolateSpathe limb apexmucronateacute or acuminateacuteacute or acuminateacute or acuminateSpathe exterioruniformly dark green with purplish vertical stripes and small whitish ovoid mottleslimb reddish-brown with small dark mottles; base grayish-green with small gray mottlesuniformly light green or gray with or without large brownish-green mottles or vertical stripesuniformly greenishwhite or pinkish-white, occasionally grading to darker pink toward basegreenish-gray or pinkish gray (rarely white) with or without large dark ovoid mottlesSpathe interiorlimb uniformly dark green; base reddishbrown with elongate warts.limb uniformly reddishbrown; base dark purple with long, (often branched) wartslimb uniformly light green or gray; base as limb or reddish with small elongate wartsas exterior or occasionally paler with small elongate wartsas exterior or paler, base typically without mottles and loosely verrucosePistillate flower densitycongestedsparse; ovaries 1–4 mm apartcongestedcongestedcongestedOvaries2–3-locular3-locular3-locular3–4-locular1-locularStigma shapedepressed; 2–3 lobedhemispheric; 2–3 lobedflattened; 3–4 lobedflattened; 3–4 lobed or bilabiatediscoid; bilabiateStigma colordark yellow to pale brownbright yellowbright yellowwhite or yellowwhite or yellowStyle length Style colorca. 1 mm reddish-purple3–4 mm reddish-purple2–3 mm greenca. 1 mm greenca. 1 mm green
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