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Araceae
Schismatoglottis mayoana Bogner & M.Hotta
SUMMARY
Mostly lithophytic herb to c. 30 cm tall. Stem condensed, pleionanthic, c. 1–1.5 cm diam. Leaves few to several together, somewhat pendent; petiole 13–21 cm long, slender, sheathing only at the extreme base, but sheath extended into a tapering, papery dark brown ligular portion to 10 cm long; blade elliptic to narrowly (oblong-) ovate, slightly but distinctly asymmetric about the midrib, 14–21 cm long × 4–8 cm wide, the base cuneate, the tip acuminate for c. 3 cm; midrib abaxially prominent; primary lateral veins hardly prominent abaxially, c. 12 on each side, diverging at c. 45°, alternating with lesser interprimary veins; secondary venation very fine and dense, arising from the midrib. Inflorescence large, solitary or two together; peduncle ⅓–½ the length of the petiole, the apex bent and obliquely deflecting the spathe and spadix. Spathe c. 12 cm long; lower spathe green, spindle-shaped, 2.5 cm long, differentiated from the limb by a distinct constriction; limb lanceolate, white, mucronate for 2 cm, incompletely opening at first, then caducous. Spadix sessile, c. ⅔ the length of the spathe; female zone 2.5 cm long, adnate to the spathe for c. 1.7 cm; pistils very numerous and crowded, narrowly ovoid to bottle-shaped, c. 0.5 mm diam.; stigma sessile, button-like, papillate; clavate interpistillar staminodes sparsely scattered among the pistils, more concentrated near junction of female zone and sterile interstice, and forming a basal row on each side along adnation of spathe and spadix; sterile interstice short, c. 2–3 mm long, 2–3 irregular whorls of staminodes resembling sterile stamens (i.e. different from interpistillar staminodes); male zone and appendix subcylindric, about twice the thickness of the top of the female zone, c. 6 mm diam.; male zone c. 2.5 cm long; stamens close-packed, truncate, more or less rectangular, c. 1 mm across, with the connective wide and about the height of the thecae, the thecae at the short ends, each with two minute pores, the top of the connective usually impressed along the long axis; appendix c. 2 cm long, blunt-tipped, composed of densely packed sterile, sometimes irregularly bent and twisted staminodes 1–2 mm across. Fruiting spathe narrowly urceolate, c. 3.5 cm long.