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FOC | Family List | FOC Vol. 19 | Rubiaceae | Spiradiclis

2. Spiradiclis baishaiensis X. X. Chen & W. L. Sha, Bull. Bot. Res., Harbin. 8(3): 107. 1988.

百色螺序草 bai se luo xu cao

Herbs, perennial, ascending, 20-50 cm tall; stems usually unbranched. Petiole 1.5-4 cm, yellow pilosulous or -villosulous; leaf blade drying papery, adaxially brown, abaxially straw-yellow, ovate-elliptic, obovate, or oblanceolate, 7-10 × 3-6 cm, adaxially glabrous, abaxially densely yellowish brown tomentose, base cuneate to acute and usually slightly inequilateral, apex acute or acuminate; secondary veins 11-23 pairs; stipules persistent, ovate-lanceolate, 9-13 × 4-6 mm, obtuse. Inflorescence cymose to paniculiform, glabrous, purplish red; peduncles 5-9 cm; branched portion 5-8 cm, dichasial; bracts linear-lanceolate, 8-15 × 1.5-2 mm; bracteoles linear, 3-5 mm; pedicels 3-4 mm. Calyx glabrous; hypanthium portion ovoid to ellipsoid, ca. 2.5 mm; limb lobed to base; lobes linear, 3-4 mm. Corolla purplish red, becoming brownish yellow when dry, tubular or tubular-funnelform, outside glabrous; tube 8-13 mm, inside pubescent near middle or bearded in throat; lobes ovate-oblong, ca. 2 mm. Capsules ellipsoid, ca. 3 × 1.5 mm. Fl. May.

● Forests. Guangxi.

In the protologue this species was said to be similar to Spiradiclis oblanceolata, although this species was classified in S. subg. Spiradiclis while S. oblanceolata was classified in S. subg. Sinospiradiclis. The protologue of S. baishaiensis apparently described short-styled flowers (cf. f. 3, f. 4, and description of style as half as long as corolla and anthers exserted); however, H. S. Lo (in FRPS 71(1): 106. 1999) reported this to be a description of a long-styled flower. The protologue described the corollas as pubescent near the middle inside, while H. S. Lo described the corollas as bearded in the throat.


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