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FOC | Family List | FOC Vol. 5 | Aristolochiaceae | Aristolochia

3. Aristolochia thibetica Franchet, J. Bot. (Morot). 12: 313. 1898.

川西马兜铃 chuan xi ma dou ling

Aristolochia feddei H. Léveillé; A. kaempferi Willdenow f. thibetica (Franchet) S. M. Hwang; ?A. liangshanensis Z. L. Yang; A. setchuenensis Franchet; A. setchuenensis var. holotricha Diels.

Shrubs climbing. Stems terete-angular, pubescent. Petiole 0.5-1 cm, pilose; leaf blade pandurate or obovate-oblong, often subrotund on old branches, 5-10 × 2-4 cm, papery, both surfaces pilose, veins palmate, 2-4 pairs from base, base truncate to slightly cordate, sinus to 0.3 cm deep, apex rounded and abruptly apiculate. Flowers on short axillary branches, solitary or paired. Peduncle pendulous, 2-3 cm, pubescent; bractlets ovate, 3-5 × 2-3 mm, inserted at middle of peduncle. Calyx limb purplish, 3-4 cm; tube horseshoe-shaped, abaxially pubescent; basal portion of tube ca. 20 × 10 mm; limb expanded, discoid, ca. 2 cm in diam., indistinctly 3-lobed; lobes broadly ovate. Anthers oblong, ca. 1 mm. Gynostemium 3-lobed. Capsule not seen. Fl. Apr-Jun.

* Forests, mountain slopes; ca. 2500 m. Sichuan, Yunnan.

Aristolochia liangshanensis is included here on the basis of the protologue; further research is needed to clarify its position and status.


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