taxonID	type	description	language	source
A5D966150236576096615F5DEFFFAE03.taxon	description	Figs 1, 2 A - I	en	Wen, Zhao-Jie, Huang, Yun-Fen, Hu, Yan-Hua, Nguyen, Khang Sinh, Wu, Lei (2021): Spiradiclis detianensis (Rubiaceae, Ophiorrhizeae), a new species from southwestern Guangxi, China. PhytoKeys 184: 103-110, DOI: http://dx.doi.org/10.3897/phytokeys.184.69886, URL: http://dx.doi.org/10.3897/phytokeys.184.69886
A5D966150236576096615F5DEFFFAE03.taxon	materials_examined	Type. China. Guangxi: Daxin county, Shuolong town, Detian village, 22 ° 52 ' N, 106 ° 43 ' E, elevation 650 - 750 m, 30 March 2018 (fl.), Zhao-Jie Wen & Guang-Fu Mou 18033001 (holotype: CSFI [CSFI 069613]; isotypes: CSFI, IBK).	en	Wen, Zhao-Jie, Huang, Yun-Fen, Hu, Yan-Hua, Nguyen, Khang Sinh, Wu, Lei (2021): Spiradiclis detianensis (Rubiaceae, Ophiorrhizeae), a new species from southwestern Guangxi, China. PhytoKeys 184: 103-110, DOI: http://dx.doi.org/10.3897/phytokeys.184.69886, URL: http://dx.doi.org/10.3897/phytokeys.184.69886
A5D966150236576096615F5DEFFFAE03.taxon	diagnosis	Diagnosis. The new species is similar to Spiradiclis cordata and S. tubiflora, but it differs from the former mainly by the cuneate leaf base (vs. cordate) and much longer corolla tubes (1.8 - 2.2 cm long vs. ca. 5 mm long), and from the latter by its subrosulate habit (vs. procumbent to creeping), longer and wider leaf blades (7.0 - 10.5 x 2.0 - 3.5 cm vs. 0.5 - 2.5 x 0.4 - 1.5 cm), more secondary veins (7 - 10 pairs vs. 3 - 5 pairs) and longer corolla tubes (18 - 22 mm vs. 14 - 16 mm).	en	Wen, Zhao-Jie, Huang, Yun-Fen, Hu, Yan-Hua, Nguyen, Khang Sinh, Wu, Lei (2021): Spiradiclis detianensis (Rubiaceae, Ophiorrhizeae), a new species from southwestern Guangxi, China. PhytoKeys 184: 103-110, DOI: http://dx.doi.org/10.3897/phytokeys.184.69886, URL: http://dx.doi.org/10.3897/phytokeys.184.69886
A5D966150236576096615F5DEFFFAE03.taxon	description	Description. Perennial herb, up to 15 cm tall; stems densely pubescent, erect or ascending, lower part rooting at nodes. Leaves subrosulate; petiole 0.8 - 1.7 cm long; leaf blade drying papery, obovate-lanceolate or oblong, 7.0 - 10.5 x 2.0 - 3.5 cm, obtuse or acute at apex, cuneate at base, adaxially dark green, puberulent, abaxially light green, pubescent, densely pubescent along veins at lower surface; secondary veins in 7 - 10 pairs; stipules persistent, pubescent, narrowly triangular, 3.2 - 5.7 mm long, or 2 - 5 - lobed, lobes linear-triangular, upper part filiform. Inflorescence cymose, 2 - 7 - flowered; peduncle 9 - 14 cm long, pubescent; bracts linear-triangular, 4 - 6 mm long, subglabrous; pedicels 0.5 - 5 mm long, pubescent. Flowers distylous. Calyx puberulent; hypanthium portion obconic, ca. 2 mm long; lobes triangular, 1.2 - 2.9 mm long, acute at apex. Corolla white to pink, tubular-funnel shaped, puberulent outside; tube 1.8 - 2.2 cm long, sharply enlarged at the 1 / 3 lower part of the corolla tube, 4.5 - 6.8 mm in diam. at throat, 1.8 - 2.5 mm in diam. near base; lobes triangular-ovate, 4.5 - 5.6 x 3.5 - 4.3 mm long. Stamens 5; anthers linear. Stigma bilobed; ovary 2 - celled. Long-styled flowers: corolla tube inside with densely pubescence near base and densely puberulent above anther and on to lobes; anthers inserted near base of corolla tube, 1.9 - 2.3 mm long; style 1.2 - 1.4 cm long, puberulent; stigma inserted at between middle and throat of corolla tube, 2 - lobed, lobes elliptic, 1.8 - 2.2 mm long. Short-styled flowers: corolla tube inside densely puberulent; anthers inserted often at or a little above middle of corolla tube, 2.6 - 3.3 mm long; style 1.5 - 3.4 mm long, glabrous; stigma near base of corolla tube, lobes ovate-triangular, 1.3 - 1.6 mm long. Capsules subglobose, 2.5 - 3.2 mm in diam., valves 4 when matured. Seeds many, angular.	en	Wen, Zhao-Jie, Huang, Yun-Fen, Hu, Yan-Hua, Nguyen, Khang Sinh, Wu, Lei (2021): Spiradiclis detianensis (Rubiaceae, Ophiorrhizeae), a new species from southwestern Guangxi, China. PhytoKeys 184: 103-110, DOI: http://dx.doi.org/10.3897/phytokeys.184.69886, URL: http://dx.doi.org/10.3897/phytokeys.184.69886
A5D966150236576096615F5DEFFFAE03.taxon	etymology	Etymology. The specific epithet refers to the type locality, where a famous attraction, Detian Waterfall, is situated.	en	Wen, Zhao-Jie, Huang, Yun-Fen, Hu, Yan-Hua, Nguyen, Khang Sinh, Wu, Lei (2021): Spiradiclis detianensis (Rubiaceae, Ophiorrhizeae), a new species from southwestern Guangxi, China. PhytoKeys 184: 103-110, DOI: http://dx.doi.org/10.3897/phytokeys.184.69886, URL: http://dx.doi.org/10.3897/phytokeys.184.69886
A5D966150236576096615F5DEFFFAE03.taxon	distribution	Distribution and habitat. Until now, only two populations of the new species have been found. They are both known from limestone hills of southern Guangxi. Plants of the new species prefer to grow at humid places at elevation range of 500 - 800 m, under evergreen broad-leaved forests with tree species of Fagaceae, Lauraceae, Tiliaceae, Theaceae, Myrsinaceae, Magnoliaceae and Sapindaceae.	en	Wen, Zhao-Jie, Huang, Yun-Fen, Hu, Yan-Hua, Nguyen, Khang Sinh, Wu, Lei (2021): Spiradiclis detianensis (Rubiaceae, Ophiorrhizeae), a new species from southwestern Guangxi, China. PhytoKeys 184: 103-110, DOI: http://dx.doi.org/10.3897/phytokeys.184.69886, URL: http://dx.doi.org/10.3897/phytokeys.184.69886
A5D966150236576096615F5DEFFFAE03.taxon	discussion	Discussion. Our unpublished molecular data indicates that Spiradiclis detianensis shows the closest genetic relationship with S. cordata. Both species prefer to grow on limestone hills from southern Guangxi, China, and have similar habit, such as short stems, subrosulate leaves, long peduncles, heterostylous flowers, funnel-shaped corollas and subglobose capsules. However, the former can be easily distinguished from the latter mainly by its leaf blade basally cuneate (vs. basally cordate) and corolla tubes 1.8 - 2.2 cm long (vs. ca. 5 mm long) (more detailed comparisons are listed in Table 1). Spiradiclis detianensis is very similar to S. spathulata in morphology, since both have subrosetted habit, obovate-oblanceolate leaf blades, long peduncles and subglobose capsules, but it differs mainly by its corolla tubular-funnel shaped (vs. slenderly salver shaped), 4.5 - 6.8 (vs. 1.5 - 2) mm in diam. at the middle and densely pubescence inside corolla near base and densely puberulent above anther and onto lobes (vs. glabrous except a ring of long hairs at the middle) (more detailed comparisons are listed in Table 1). Spiradiclis detianensis is a distinct species in the genus Spiradiclis due to the corolla tubes 18 - 22 mm long and having the shape of a reversed wine bottle, with an abruptly narrowed lower third, 4.5 - 6.8 mm in diam. at throat, 1.8 - 2.5 mm in diam. near base. Until now, only one other known species, S. tubiflora L. Wu, B. M. Wang & B. Pan (Wu et al. 2019 b), has a similar corolla shape (see Fig. 2 K & L). However, S. detianensis differs from S. tubiflora principally by its rosulate habit (vs. procumbent to creeping), leaf blades longer than 7 cm and wider than 2 cm (vs. shorter than 2.5 cm and narrower than 1.5 cm), secondary veins 7 - 10 pairs (vs. 3 - 5 pairs) and longer corolla tubes (vs. 18 - 22 mm vs. 14 - 16 mm) (more detailed comparisons are listed in Table 1).	en	Wen, Zhao-Jie, Huang, Yun-Fen, Hu, Yan-Hua, Nguyen, Khang Sinh, Wu, Lei (2021): Spiradiclis detianensis (Rubiaceae, Ophiorrhizeae), a new species from southwestern Guangxi, China. PhytoKeys 184: 103-110, DOI: http://dx.doi.org/10.3897/phytokeys.184.69886, URL: http://dx.doi.org/10.3897/phytokeys.184.69886
A5D966150236576096615F5DEFFFAE03.taxon	materials_examined	Additional specimens examined. (paratypes). China. Guangxi: Longzhou county, Nonggang National Nature Reserve, 2 April 2019 (fl.), Zheng-Quan Nong nzq 0004 (CSFI); Niming county, Tingliang Town, Lixin village, 28 July 2011 (fr.), Yu-Song Huang 9422 (IBK).	en	Wen, Zhao-Jie, Huang, Yun-Fen, Hu, Yan-Hua, Nguyen, Khang Sinh, Wu, Lei (2021): Spiradiclis detianensis (Rubiaceae, Ophiorrhizeae), a new species from southwestern Guangxi, China. PhytoKeys 184: 103-110, DOI: http://dx.doi.org/10.3897/phytokeys.184.69886, URL: http://dx.doi.org/10.3897/phytokeys.184.69886
