生活型

herb

形態特徵

• Perennial herb 0.15-0.4 m tall, ascending, ± creeping and rooting at base, ± branched above; stems ± caespitose, terete, eglandular.
• Leaves sessile or shortly petiolate with petiole to 0.7 mm long; lamina 0.4-1.7(2) cm long, 0.2-0.6 cm broad, triangular-lanceolate or ovate to obovate, apex rounded, base cordate-amplexicaul to cuneate, chartaceous, paler or glaucous beneath, with 3-4 ascending lateral veins and fine ± lax reticulate venation rather dense intramarginal dark glands numerous laminar glandular dots, varying in size, only pale.
• Inflorescence 1- ca. 10-flowered, subcorymbose to cylindric (including flowering, branches); flowers 5-10 mm in diam., concave, in bud ellipsoid, obtuse; sepals 3-5.5 mm long, 1-1.5 mm broad, lanceolate to narrowly oblong or linear, obtuse to rounded, entire, with ± dense intramarginal dark sometimes also pale glands and few laminar dots and ± elongate streaks, all pale, ascending in fruit; petals (3-)5-6(-8) mm long, 2-3.5 mm broad, obovate-oblong, mid-yellow, persistent, with small dark sessile to stalked marginal glands near apex only or round upper half and few or no laminar pale glands or streaks; stamen fascicles 3, persistent, each with an average of 7-10 stamens; anthers yellow, with black gland; ovary 3 mm long, ovoid, 3-locular, the styles longer (1-1.5 mm), free, spreading or ascending from base.
• Capsule 4-5(-6.5) mm long, 4-4.5 mm broad, ovoid to suborbicular, with longitudinal vittae; seeds 0.5-0.6 mm long, dark brown, finely scalariform-reticulate, not carinate, without terminal appendage.
• On the basis of work by J. Kudo (in Bull. Natl. Sci. Mus., Tokyo, Ser. B. 13: 69-80. 1987) it is clear that the Taiwan plants, although closely related to the more southern Japanese species of the <i>H. pseudopetiolatum</i> group. viz. <i>H. kiusianum</i> Koidz., differ from it interalia in capsule shape and habit. They should therefore be treated as a separate species, <i>H. taihezanense</i>.

分布

• 台灣 : central and northern Taiwan. roadsides, open ground, grassy places, montane slopes, forest margins, 1,000-3,000 m.
• 世界 : The Philippines (Luzon).

引證標本

TAIPEI: Sitisei, Shimada 405. ILAN: Taipingshan, Suzuki 79. HSINCHU: Memtoyu, Chikotohu, Suzuki 20290. NANTOU: Chuifen to Sungkang, Wu, Leu & Chiu 7703. CHIAYI: Mt. Alishan, Gressitt 176. TAITUNG: Asahi-Idzumo Station, Yamamoto & Mori 345. HUALIEN: Mukuashan Forests, No. 77. Compt., Liu, Chen & Kao 233.

參考文獻

• ROBSON, NORMAN K. B., Flora of Taiwan, second edition 2: 712. 1996.  (Fl. Taiwan 2nd edit.)