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FOC | Family List | FOC Vol. 23 | Araceae | Schismatoglottis

1. Schismatoglottis hainanensis H. Li, Acta Phytotax. Sin. 15(2): 103. 1977.

落檐 luo yan

Herbs, stoloniferous, forming dense colonies. Petiole 20-30 cm, proximal half sheathing; leaf blade glaucous abaxially, dark green adaxially, elliptic or oblong-lanceolate, 16-17 × 5.5-7 cm, both surfaces densely and minutely impressed punctate, base rounded or obtuse, apex acuminate; primary veins 8-10 per side, adaxially always raised toward midrib; secondary and tertiary veins arising mostly from midrib. Peduncle shorter than petioles, ca. 13 cm. Spathe convolute, pale green or white, ca. 7 cm; proximal part elliptic, ca. 2.5 × 0.6 cm, persistent; distal part convolute, horn-shaped; limb caducous. Spadix ca. 5 cm; female zone adnate to spathe, ca. 2.5 cm × 4-5 mm, attenuate toward apex; pistil oblong, ca. 1 mm, 1-loculed, with 2 parietal placentae; ovules numerous, anatropous, obovoid, with longitudinal striations; funicle long and slender, carried on placentae in 2 ranks; distal sterile zone clavate, ca. 13 × 5 mm, attenuate toward base, apex obtuse; staminodes cylindric; male zone cylindric, ca. 15 × 4 mm; fertile stamens with anthers subcuneate, dehiscing by a terminal pore. Fl. Aug-Oct.

● Dense tropical forests, on rocks; 100-200 m. Hainan.

One of us (Li) notes that Schismatoglottis hainanensis differs from "S. cadieri" (Buchet & Gagnepain in Lecomte et al., Fl. Indo-Chine 6: 1118. 1942), from Vietnam, in having an elliptic or oblong-lanceolate leaf blade and a spadix with a sterile terminal appendix. The latter name was not validly published because no Latin description or diagnosis was provided (Vienna Code, Art. 36.1).

One of us (Boyce) is very doubtful that Schismatoglottis hainanensis is distinct from S. calyptrata. A final decision is deferred pending examination of the type of S. hainanensis.


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