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FOC | Family List | FOC Vol. 14 | Apiaceae | Acronema

2. Acronema graminifolium (W. W. Smith) S. L. Liou & R. H. Shan, Acta Phytotax. Sin. 18: 197. 1980.

禾叶丝瓣芹 he ye si ban qin

Pimpinella hookeri C. B. Clarke var. graminifolia W. W. Smith, Rec. Bot. Soc. India 4: 267. 1911; Acronema hookeri (C. B. Clarke) H. Wolff var. graminifolium (W. W. Smith) H. Wolff.

Plants 20–80 cm. Rhizome tuberous, globose, 6–8 mm thick. Stem purplish, hollow, thinly ribbed. Lower stem leaves petiolate, petioles 5–11 cm, sheaths short; blade 3–9 × 5–10 cm, 2–3-pinnate; ultimate segments linear, 2.5–7 × 2–4 mm, entire, scabrous along nerves adaxially. Umbels 3–8 cm across; bracts and bracteoles usually absent; rays 3–7, 4–35 mm, unequal; umbellules 8–15 mm across, 4–9-flowered; pedicels 0.5–1.3 cm, slender, unequal. Calyx teeth obsolete. Petals white or margin purplish, ovate, 5–5.5 × ca. 0.7 mm; apex long-linear, ca. 4 mm. Young fruit broad-ovoid, ca. 2 × 1 mm (mature fruit poorly known). Fl. Jun–Aug.

Forests, mountain slopes; 2600–4000 m. W Sichuan, S Xizang [Bhutan, Sikkim].

This is a rather poorly known taxon. In Bhutan this plant grows in mixed populations with Acronema hookeri and is sometimes treated as a variety of that species. Further collections are needed to resolve the taxonomy.


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