12. Spiradiclis fusca H. S. Lo, Guihaia. 11: 100. 1991.
两广螺序草 liang guang luo xu cao
Herbs, 30-80 cm tall, perhaps perennial, perhaps ascending; stems glabrous, when dry brownish yellow. Petiole 0.5-1.5 cm; leaf blade drying thinly papery, adaxially grayish brown, abaxially brownish yellow, oblong-lanceolate to subelliptic, 4-9 × 1.5-3.5 cm, adaxially glabrous, abaxially pilose on principal veins, base cuneate and somewhat decurrent, apex acuminate or subacute; secondary veins 11-13 pairs; stipules triangular, 6-7 mm, long acuminate, usually 2-parted. Inflorescences paniculiform, many flowered, together with peduncles 7-10 cm, glabrous; bracteoles subulate or linear, 2-3 mm; pedicels short. Calyx glabrous; hypanthium portion obconic, ca. 1 mm; lobes sublanceolate, ca. 1.5 mm. Corolla white or pale purple, funnelform, glabrous outside; tube ca. 9 mm; lobes subtriangular, ca. 3 mm, apically rostrate-incurved. Capsules unknown. Fl. Mar.
● Limestone hills. Guangdong (Lianxian), Guangxi (Guilin).
The characters given in the protologue, in particular the proportional length of the calyx lobes to the corolla, do not seem to correspond to the figure of this species presented by H. S. Lo in FRPS (71(1): 102, t. 22, f. 6-10. 1999). This species was keyed by Lo in FRPS (loc. cit.: 87) as having pubescent stems and inflorescences, but the description (loc. cit.: 99-100) differed from that and so the species is here included in a different section of the key.