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FOC | Family List | FOC Vol. 23 | Araceae | Pothos

4. Pothos kerrii Buchet ex P. C. Boyce, Blumea. 45: 168. 2000.

长梗石柑 chang geng shi gan

Lianas, medium sized, to 4 m, root-climbing. Stems terete in cross section, to 6 mm in diam. Leaves when fresh mid-green; petiole oblong to oblong-triangular, 10-30(-50) × 5-10 mm, broadly winged, base decurrent to clawed, apex truncate to auriculate; each side with 2-4 secondary veins, veins prominent, especially in dried material; leaf blade lanceolate to narrowly elliptic, 7.5-13 × 1.25-2.5 cm, base rounded, apex long attenuate-mucronate to acute, minutely tubulate; each side with 2 or 3 intramarginal veins arising from base and immediately diverging and reaching leaf tip. Flowering shoot much abbreviated, arising from middle to distal leaf axils of fertile shoots, bearing a minute prophyll and few cataphylls 3-10 mm, sequentially longer. Inflorescence solitary; peduncle erect to spreading, curving to bring inflorescence upright, deep purple, very long and slender, 25-40 × 0.5-1 mm. Spathe greenish purple, ovate, deeply concave to almost flat, 4-6 × 3.5-7 mm, base prominently cordate, clasping and minutely decurrent on peduncle, margins straight, apex obtuse with a small but prominent mucro. Spadix stipitate; stipe erect, straight, deep purple, terete in cross section, 10-18 × 0.23-0.75 mm; fertile zone pale yellow, globose, 3.5-4 × 3.5-4.5 mm. Flowers 1-2 mm in diam. Infructescence with 1-7 berries. Fruit obclavate to ellipsoid, 10-15 × 7.5-10 mm. Fl. Aug.

Dense forests, on rocks. SE Guangxi (Longzhou) [Laos, Vietnam].

The name Pothos kerrii was first published by Gagnepain (in Lecomte et al., Fl. Indo-Chine 6: 1085. 1942) but not validly so because no Latin description or diagnosis was provided (Vienna Code, Art. 36.1).

Pothos kerrii is quite similar to P. pilulifer, but it differs by the elongated peduncle and stipe (7.5-8 cm together vs. 1.3-2 cm together in P. pilulifer).

The plant is used medicinally to treat traumatic injuries.


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