Araceae
Typhonium lineare Hett. & V.D.Nguyen
SUMMARY
Underground part a short, tuberous rhizome, to 2 cm long, to 2 cm in diam., producing small globose offsets annually. Petiole of mature leaves 10-28 cm long, 2-3 mm in diam., smooth, base very pale whitish pink with short, brownish striations, remaining part uniformly green; lamina of mature leaves pedatisect, with up to 7 segments, all linear or linear-lanceolate, upper surface green, slightly glossy, lower surface pale green, anterior segment 14- 20 cm long, 3-12 mm in diam., acute, posterior segments 13-17 cm long, carrying 3 or 4 lobes, first seasonal and juvenile leaves trisect. Inflorescence appearing after the leaves, short peduncled; peduncle 5-7 mm long, ca. 2 mm in diam., whitish with short, reddish striations; spathe to ca. 17 cm long, basal part separated from the limb by a constriction, convolute, elliptical, to 1.8 cm long, to 0.8 cm in diam., outside whitish gray with blackish gray veins, striations and dots, inside dark reddish pink, limb at anthesis horizontal, linear, ca. 12-16 cm long, ca. 1 cm in diam. at the base, acute, outside pale gray with dense, dark reddish brown striations, inside dark reddish to brownish pink or pale dirty greenish with pale brown margins. Spadix as long as spathe or slightly shorter, to ca. 17 cm long; female part slightly conic, 3-4 mm long, 6-8 mm in diam., flowers congested; sterile interstice above female part ca. 10 mm long, basally with a dense whorl of staminodes, remainder smooth; male part cylindric, ca. 8 mm long, ca. 2 mm in diam., flowers congested; appendix filiform, stipitate, to ca. 15 cm long, ca. 3 mm in diam. just above the base, smooth, acute, stipe whitish, remainder brown or golden yellow. Ovaries obovate, 1-1.5 mm long, 0.5-1 mm in diam., angulate in cross-section, white; stigmas sessile, annulate, ca. 0.7 mm in diam., ca. 0.2 mm high, reddish. Staminodes in a dense whorl, subulate or fusiform, 1-2 mm long, variously directed, apex often hooked, white or yellow, acute. Stamens pink.