翻白蚊子草 fan bai wen zi cao

Spiraea digitata Willdenow var. intermedia Glehn, Trudy Imp. S.-Peterburgsk. Bot. Sada 4: 38. 1876; Filipendula angustiloba (Turczaninow) Maximowicz var. tomentosa Maximowicz.

Plants 80–100 cm tall. Stems sulcate, subglabrous. Stipules semicordate, enlarged, herbaceous, margin serrate; petiole subglabrous; leaf blade pinnate, with 2–5 pairs of leaflets, abaxially white tomentose and pilose on veins, adaxially glabrous; terminal leaflet usually 7–9-lobed, equaling or slightly larger than lateral ones, lobes linear or lanceolate, margin regularly serrate or not, apex acuminate; lateral leaflets resembling terminal one, becoming smaller and less lobed toward base of leaf. Inflorescence terminal, paniculate. Flowers bisexual; pedicel usually pubescent. Sepals ovate, densely pubescent abaxially, apex obtuse or acute. Petals white, obovate. Achenes erect, shortly stipitate, hirsute-ciliate along abaxial and adaxial sides. Fl. and fr. Jun–Aug.

Mountain thickets, meadows, river banks. Heilongjiang, Jilin [Mongolia, Russia].

Filipendula ×intermedia is a putative, natural hybrid between F. angustiloba and F. palmata.