Araceae (PDF)

ARACEAE 75sessile or subsessile, disciform, 6-lobed; sterile zone whitish,cylindric, 1–5 × 0.3–1.8 cm; synandrodes depressed obpyramidal;male zone yellow, cylindric, 3.5–14 × 0.4–1.5 cm; synandria3–10-androus, yellow, 1–2 mm; appendix absent or erect,narrowly conic, ca. 5 cm. Fruit not seen. Fl. May–Sep. 2n = 28.Dense rain forests, evergreen broad-leaved forests, and forest marginsin valleys in limestone areas, along streams in evergreen broadleavedforests, moist shaded thickets; 600–1200 m. S and W Yunnan(Mengla, Tengchong, Yingjiang) [NE India, N Laos, N Myanmar, NThailand].5. Colocasia affinis Schott, Bonplandia (Hannover) 7: 28. 1859.卷 苞 芋 juan bao yuColocasia bicolor C. L. Long & L. M. Cao.Herbs, perennial, terrestrial, with stolons and tubercles.Stolons trailing horizontally, pale green, thin, 3.7–40 cm × ca. 4mm, branched; internodes cylindric, 2.7–9 cm, with tubercles;tubercles triangular or ovate, ca. 2 cm in diam. Leaves 3–7;petiole light green or greenish white, without transverse purplelines, cylindric, 20–45 cm; leaf blade pale green abaxially,green or light green adaxially, with 4–6 pairs of large purplespots (lighter when growing in a very shady environment), peltate,ovate-cordate, (5–)16–21 × (4.7–)13–16 cm, membranous;primary lateral veins in 3 or 4 pairs, marginal veins inconspicuous.Inflorescences 1–3; peduncle pale green, cylindric,much shorter than petioles, 6.4–15 cm. Spathe constricted; tubeconvolute, green, almost cylindric, 1.3–2.7 × 0.6–1.8 cm; limbusually reflexed at anthesis, yellow, greenish white, or yellowish,oblong-lanceolate, 4.2–7.8 × 1.6–3.3 cm. Spadix sessile,shorter than spathe; female zone cylindric, short, 0.9–1.7cm × 3–8 mm; female flowers green; ovary ovoid; ovules ca.30; funicle long; placentae parietal; stigma sessile; sterile zoneabsent between female and male zones or cream-colored, 0.5–0.8 cm × 0.8–2 mm; male zone yellowish, pale pink, or creamcolored,1–1.7 cm × 2.5–5 mm; male flowers 6–8-androus;stamens connate into a synandrium, yellow; appendix reddishpurple, greenish white, or light yellow, cylindric in proximalpart but conic in distal part, 1.7–5.1 cm × 1.5–6 mm. Youngberry green. Fl. Jun–Aug, fr. Jul–Oct. 2n = 28.Moist shaded places in forests and at forest margins, hillsides inlimestone areas; 800–1400 m. S Yunnan (Jinghong, Lancang, Mengla,Simao) [N Bangladesh, NE India, N Myanmar, Nepal].6. Colocasia fallax Schott, Bonplandia (Hannover) 7: 28. 1859.假 芋 jia yuColocasia heterochroma H. Li & Z. X. Wei; C. kerriiGagnepain; C. tibetensis J. T. Yin; C. yunnanensis C. L. Long &X. Z. Cai.Herbs, small to somewhat robust, stoloniferous. Rhizomeerect, up to 7 × 1–1.5 cm; stolons pale green or pale purple,erect or creeping, mostly simple, 5–60 cm × up to 6 mm,internodes 0.5–1.5 cm, bearing ovoid or cylindric-ovoid tuberclesto 3.5 cm in diam., or without tubercles. Leaves 3–8;petiole green, sometimes with transverse purple lines, cylindric,12–57 cm, sheathing for almost 1/2 length; leaf blade paler orslightly glaucous abaxially, green or with dark purple patchesbetween primary veins adaxially, cordate-peltate, ovate-cordate,or narrowly oblong-ovate, 8–36 × 3.3–29 cm, membranous,apex apiculate; primary lateral veins 5–7. Inflorescences 1–5together; peduncle green, cylindric, 4–23 cm, slender. Spatheconstricted or not between tube and limb; tube green, funnelformor subcylindric, 1.7–4.2 × 0.7–1.7 cm, margins convolute;limb at anthesis proximally gaping, distally convolute, erect,sometimes slightly reflexed after anthesis, orange-yellow,golden yellow, or yellowish basally, violet apically, narrowlylanceolate to oblong-lanceolate, 5–11.2 × 2.7–4.8 cm, apex longacuminate. Spadix sessile, to 6.5 cm, shorter than spathe; femalezone yellow, pale yellowish, or green, conic or cylindric,1–2.6 cm × 4–6 mm, with 4–6 rows of whitish or yellowstaminodes at base; ovary green, speckled white, subglobose orovoid to oblong, ca. 1 mm, 1-loculed; placentae 3; stigma sessileor subsessile, disciform-capitate, or disciform at base andtapering distally into a linear point to 0.5 mm; sterile zonepresent between female and male zones; male zone yellow,cylindric, 1.1–4.6 cm × 3–6 mm; synandria golden yellow,polygonal, 6–12-androus; distal sterile zone (between malezone and appendix) cream-colored, cylindric, 0.5–1.2 cm × 1–3mm, with white hairs, hairs 10–15 mm at anthesis, disappearingon drying; synandrodes broadly oblong to depressed ovate ordepressed obpyramidal, apex truncate or subtruncate; appendixabsent or yellowish, cylindric or narrowly conic, 2.5–4.5 cm ×1–2.5 mm, scaly-rough, base distinctly constricted or not, apexacute. Berry ripening yellow, ovoid, ca. 2 mm. Fl. Mar–Sep, fr.Jul–Oct. 2n = 28.Dense forests, humid forest margins, moist mossy rock faces inforests, valley scrub, moist shaded places along streams; 700–1400 m.SE Xizang (Mêdog), S and W Yunnan [N Bangladesh, Bhutan, NEIndia, Nepal, Thailand].25. ALOCASIA (Schott) G. Don in Sweet, Hort. Brit., ed. 3, 631. 1839, nom. cons.,not Necker ex Rafinesque (1837).海 芋 属 hai yu shuLi Heng ( 李 恒 Li Hen); Peter C. BoyceColocasia sect. Alocasia Schott in Schott & Endlicher, Melet. Bot. 18. 1832; Ensolenanthe Schott; Panzhuyuia Z. Y. Zhu;Schizocasia Schott ex Engler; Xenophya Schott.Herbs, evergreen, rarely seasonally dormant, latex-bearing, medium sized to rarely arborescent and gigantic. Stem thick, oftenhypogeal, sometimes stoloniferous and bulbiferous, epigeal stem usually erect and later decumbent, rather less often elongated andcreeping. Leaves few to several in terminal crown, less often scattered, sometimes each subtended by a cataphyll; petiole long[sometimes minutely asperous, minutely puberulent, or glandular], sheath relatively long; leaf blade sometimes pubescent abaxially,