生活型

herb

形態特徵

• Plants ca. 20 cm tall. Tuberous root ovoid, up to 2.2 cm long, 1.6 cm in diameter. Stems terete, glabrous, ca. 3 mm in diameter.
• Leaves sessile, fleshy, elongate-elliptic, up to 9.3 cm long, 2.3 cm wide, green but pale-green underneath, acute at apex, keeled underneath, contracted into a sheath at base and embracing stem.
• Inflorescence bearing a single flower arising from axillary bud; bract much greater in size than flower, elongate-elliptic, 5.6 cm long,1.8 cm wide, acute; pedicel and ovary green, 12 mm long, 3 mm wide, curved, covered with extremely minute white pubescence. Flower solitary, 2.3 cm across, almost 4 cm long including spur; perianths green, not spreading, reflexed at tips; upper sepal ovate, 18 mm long, 7 mm wide, obtuse at apex, thickened at base; lateral sepals ovate, curved, 20 mm long, 7 mm wide, obtuse at apex; petals falcate, lying closely underneath upper sepal, 18 mm long, 5.5 mm wide, obtuse; lip more or less campanulate, obovate-orbicular when expanded, side margins incurved but not meeting each other, forming a tube with an open mouth about 2.3 cm across, acute, 2.6 cm long by 3 cm wide when lip expanded, basal part produced into a compressed spur 9 mm long and 5 mm wide at base; lip disc glabrous, yellow on basal part, central lane greenish, front limb white. Column about 5 mm tall, adnate with lip; anther erect, adnate to column, staminodes obvious on both sides of column; pollinia 2, attached to a viscid disc through a wide transparent thin stipe; stigma flat, underneath rostellum.

物候

Flowering time: August.

分布

• 台灣 : in a broadleaf forest of Mt. Peitawu at an elevation of 1500 m.

引證標本

Yi-Fu Wang s.n. (holo TAI268953, Mt. Peitawu, Pingtung Co.)

參考文獻

• Tsan-Piao Lin and Wei-Min Lin, Taiwania 54(4): 323. 2009.