taxonID	type	description	language	source
03DA673AFF85FFF7FF7AF9E8FB2FFC9A.taxon	diagnosis	Ceropegia acicularis is distinguished from C. thailandica by its branched stem, small solitary flower and spatulate corolla lobes.	en	Kidyoo, Manit (2014): Two new species of Ceropegia (Apocynaceae, Asclepiadoideae) from eastern Thailand. Phytotaxa 162 (2): 91-98, DOI: 10.11646/phytotaxa.162.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.162.2.3
03DA673AFF85FFF7FF7AF9E8FB2FFC9A.taxon	materials_examined	Type: — THAILAND. Ubon Ratchathani: Pha Taem National Park, 227 m, 12 September 2010, M. Kidyoo 1507 (holotype, BCU!, isotype, BKF!).	en	Kidyoo, Manit (2014): Two new species of Ceropegia (Apocynaceae, Asclepiadoideae) from eastern Thailand. Phytotaxa 162 (2): 91-98, DOI: 10.11646/phytotaxa.162.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.162.2.3
03DA673AFF85FFF7FF7AF9E8FB2FFC9A.taxon	description	Herbs, perennial, erect, not twining, with clear latex in all parts. Rootstock tuberous, tubers subglobose or irregular, light brown, 1.5 – 3 cm in diam., usually with a cluster of fusiform roots. Stem solitary or several arising from tuber, terete to slightly rectangular, glabrous, usually branched, 10 – 20 cm tall, 1.2 – 2.5 mm in diam., green when young, turning brown with age; internodes 1.3 – 5.7 cm long. Leaves opposite, sessile; blade straight, filiform, succulent, 2 – 6.5 × 0.08 – 0.12 cm, slightly semi-circular in cross section, coriaceous, base attenuate, margins entire, apex acuminate; abaxial surface pale green, glabrous, adaxial surface green, glabrous; veins obscure. Flower solitary, axillary or extra-axillary; pedicel stout, erect, green, pinkish white or reddish brown, 3 – 5 mm long, 0.7 – 0.8 mm in diam., glabrous; bract solitary, attached at base of pedicel, ca. 0.5 × 0.2 mm, lanceolate, green or pinkish brown, apex acute to acuminate. Calyx deeply 5 - parted, lobes green or greenish or reddish brown, triangular, 1 – 1.2 × 0.4 – 0.5 mm, apex sharply acute, glabrous. Corolla tubular-urceolate, upright, straight; corolla tube yellowish white or pinkish white with 5 - reddish brown bands or dots alternate to the sepals, 6.5 – 9.3 mm long, glabrous, slightly inflated at base (about 2 / 3 length of tube length), 4.5 – 5.5 mm in diam., then narrowing into a tube 2.5 – 3 mm in diam., interior glabrous, yellowish white with reddish brown line along tube; lobes spatulate, apex acute, 4.5 – 7.3 × 1.8 – 2.1 mm, outside yellowish white with reddish brown bands along margin or with scattered reddish brown spots, inside green or greenish brown; basal part loosely twisted, 3 – 5.4 × 1 – 1.3 mm, inside covered with white hairs, margins slightly reflexed, auriculate, auricles reddish brown; apically connate and forming a cage-like structure. Gynostegium stipitate, stipe 1.1 – 1.5 mm tall, 1.2 – 1.5 mm in diam. Corona double, outer corona formed by 5 lobes, joined to form a shallow cup, apex of lobes short, bifid, dark brown in color and covered with hair at each tip; inner corona formed by 5 lobes, terete, 2 – 2.3 mm long, 0.2 – 0.3 mm in diam., lower part dark brown, incumbent on dorsal surface of anthers, apical part connivent-erect, yellowish white or pinkish white, apex slightly recurved. Pollinaria 5, pollinium broadly ovoid, yellow, 0.38 – 0.40 × 0.27 – 0.29 mm, translators stout, hyaline, ca. 0.07 × 0.1 mm, corpusculum spatulate, reddish brown, 0.20 – 0.33 × 0.12 – 0.14 mm. Ovaries 2, ovoid, ca. 1.4 mm long, 0.4 mm in diam., glabrous. Fruits follicles, usually 2, linear-lanceolate in outline, green when young, turning reddish brown with age, 8.5 – 10 cm long, 2.5 – 3 mm in diam. Seeds oblong, 8 – 10 × 2.3 – 2.5 mm, with a single coma of hairs 1.2 – 1.5 cm long, silky white.	en	Kidyoo, Manit (2014): Two new species of Ceropegia (Apocynaceae, Asclepiadoideae) from eastern Thailand. Phytotaxa 162 (2): 91-98, DOI: 10.11646/phytotaxa.162.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.162.2.3
03DA673AFF85FFF7FF7AF9E8FB2FFC9A.taxon	distribution	Distribution: — Thailand (Ubon Ratchathani Province).	en	Kidyoo, Manit (2014): Two new species of Ceropegia (Apocynaceae, Asclepiadoideae) from eastern Thailand. Phytotaxa 162 (2): 91-98, DOI: 10.11646/phytotaxa.162.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.162.2.3
03DA673AFF85FFF7FF7AF9E8FB2FFC9A.taxon	biology_ecology	Habitat & Ecology: — In sandy soil in open areas of deciduous dipterocarp forest at 139 – 227 m elevation. Flowering July – October.	en	Kidyoo, Manit (2014): Two new species of Ceropegia (Apocynaceae, Asclepiadoideae) from eastern Thailand. Phytotaxa 162 (2): 91-98, DOI: 10.11646/phytotaxa.162.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.162.2.3
03DA673AFF85FFF7FF7AF9E8FB2FFC9A.taxon	etymology	Etymology: — The specific epithet, acicularis, refers to the markedly needle-like leaves.	en	Kidyoo, Manit (2014): Two new species of Ceropegia (Apocynaceae, Asclepiadoideae) from eastern Thailand. Phytotaxa 162 (2): 91-98, DOI: 10.11646/phytotaxa.162.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.162.2.3
03DA673AFF87FFF1FF7FFCABFC35F815.taxon	diagnosis	Ceropegia tenuicaulis differs from C. thailandica by its slender stem to 50 cm tall, a tubular-urceolate c orolla tube, and dense non-glandular hairs on the corolla lobes.	en	Kidyoo, Manit (2014): Two new species of Ceropegia (Apocynaceae, Asclepiadoideae) from eastern Thailand. Phytotaxa 162 (2): 91-98, DOI: 10.11646/phytotaxa.162.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.162.2.3
03DA673AFF87FFF1FF7FFCABFC35F815.taxon	materials_examined	Type: — THAILAND. Ubon Ratchathani: Pha Taem National Park, 230 m, 13 September 2010, M. Kidyoo 1508 (holotype, BCU!, isotype, BKF!).	en	Kidyoo, Manit (2014): Two new species of Ceropegia (Apocynaceae, Asclepiadoideae) from eastern Thailand. Phytotaxa 162 (2): 91-98, DOI: 10.11646/phytotaxa.162.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.162.2.3
03DA673AFF87FFF1FF7FFCABFC35F815.taxon	description	Herbs, perennial, erect, not twining, with clear latex in all parts. Rootstock tuberous; tubers subglobose, smooth, light brown, 1.5 – 2 cm in diam. Stem terete, usually solitary, glabrous, usually unbranched, 30 – 50 cm tall, 1 – 1.5 mm in diam., green when young and turning brown with age; internodes 2 – 8.5 cm long, usually shorter on upper part. Leaves opposite, sessile; blade linear to linear-lanceolate, 5 – 10.5 × 0.15 – 0.25 cm, slightly carinate in cross section, coriaceous, base attenuate, margins entire, slightly revolute, apex acute to acuminate; abaxial surface pale green, glabrous, adaxial surface green, glabrous; midrib greenish white, slightly convex; lateral veins obscure. Inflorescence 1 – flowered cyme, axillary or extra-axillary; peduncle slender, erect, green, glabrous, 1 – 2.7 cm long, ca. 0.5 mm in diam.; pedicel white or pinkish white, 4 – 8 mm long, 0.8 – 1 mm in diam., glabrous; bract solitary, attached at base of pedicel, lanceolate, ca. 0.8 × 0.3 mm, pinkish white, apex acute. Calyx deeply 5 - parted, lobes yellowish green or green, narrowly lanceolate, 1.4 – 1.7 × 0.4 – 0.5 mm, glabrous, apex sharply acute, pink. Corolla tubular-urceolate, upright, straight; corolla tube purplish or reddish brown or basal part greenish brown and upper part reddish brown, glabrous, 1.6 – 1.8 cm long, slightly inflated at base (about 1 / 2 of tube length), 0.5 – 0.6 cm in diam., inflated above, tube becoming straight and gradually narrowing to an ascending cylindrical portion 2.5 – 3 mm in diam.; interior of inflated part purplish brown, covered with long white hairs; lobes linear, 3.7 – 4 × 0.17 – 0.19 cm, long caudate, outside brown or purplish brown, inside green or greenish brown, basal part loosely twisted, 2.5 – 3 × 1.9 – 2.1 mm, margins slightly reflexed, auriculate, auricles green; upper parts overlapping and dextrorsely tightly twisted, margin except auricles covered with brown or purplish non-glandular hairs. Gynostegium stipitate, stipe 1 – 1.5 mm long, 1 – 1.1 mm in diam. Corona double, outer lobes 5, joined to form a shallow cup, 3.4 – 3.5 mm in diam., hairy inside, apex of lobes bifid, yellowish white; inner lobes 5, terete, 3.5 – 3.7 mm long, 0.2 – 0.3 mm in diam., lower part dark brown, incumbent on dorsal surface of anthers, apical part usually long connivent-erect, yellowish white or pinkish white, apex slightly recurved. Pollinaria 5, pollinium broadly ovoid, yellow, 0.53 – 0.57 × 0.41 – 0.42 mm, translators stout, hyaline, ca. 0.09 × 0.1 mm, corpusculum spatulate, reddish brown, 0.40 – 0.41 × 0.19 – 0.21 mm. Ovaries 2, ovoid, ca. 2 mm long, 0.5 mm in diam., glabrous. Fruits follicles, usually 2, linearlanceolate in outline, green when young, turning reddish brown with age, 5 – 7.5 cm long, 2.5 – 3 mm in diam. Seeds ovate-oblong, 5 – 6 × 1.9 – 2 mm, with a single coma of hairs 1 – 1.2 cm long, silky white.	en	Kidyoo, Manit (2014): Two new species of Ceropegia (Apocynaceae, Asclepiadoideae) from eastern Thailand. Phytotaxa 162 (2): 91-98, DOI: 10.11646/phytotaxa.162.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.162.2.3
03DA673AFF87FFF1FF7FFCABFC35F815.taxon	distribution	Distribution: — Thailand (Ubon Ratchathani Province).	en	Kidyoo, Manit (2014): Two new species of Ceropegia (Apocynaceae, Asclepiadoideae) from eastern Thailand. Phytotaxa 162 (2): 91-98, DOI: 10.11646/phytotaxa.162.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.162.2.3
03DA673AFF87FFF1FF7FFCABFC35F815.taxon	biology_ecology	Habitat & Ecology: — In sandy soil among tall grasses in open area of deciduous dipterocarp forest at about 230 m elevation. Flowering July – October.	en	Kidyoo, Manit (2014): Two new species of Ceropegia (Apocynaceae, Asclepiadoideae) from eastern Thailand. Phytotaxa 162 (2): 91-98, DOI: 10.11646/phytotaxa.162.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.162.2.3
03DA673AFF87FFF1FF7FFCABFC35F815.taxon	etymology	Etymology: — The specific epithet, tenuicaulis, refers to the noticeable erect, slender stem.	en	Kidyoo, Manit (2014): Two new species of Ceropegia (Apocynaceae, Asclepiadoideae) from eastern Thailand. Phytotaxa 162 (2): 91-98, DOI: 10.11646/phytotaxa.162.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.162.2.3
03DA673AFF87FFF1FF7FFCABFC35F815.taxon	discussion	Discussion: — Only a few species of Ceropegia, including C. acicularis and C. tenuicaulis are grass-like. Other examples of this type are C. antennifera Schlechter (46: 1895), C. attenuata Hooker (t. 867: 1852), C. spiralis Wight (t. 1267: 1850) and C. thailandica Meve. These species have an erect stem arising from a tuber (subglobose or irregular in shape) with lanceolate to linear leaves and a 1 - flowered inflorescences (Hooker 1883, Huber 1957, Ansari 1984, Li et al. 1995, Meve 2009). The two new species, C. acicularis and C. tenuicaulis are mostly similar to C. thailandica in habit, habitat, vegetative characteristics, as well as in some reproductive traits, i. e. grass-like perennial herb with non-twining stem arising from subglobose tuber, having lanceolate to linear leaves and a single flower, growing in open sandy areas of deciduous dipterocarp forests. Although these three species have features in common, they can be clearly distinguished on the basis of the following characters. Ceropegia tenuicaulis and C. thailandica usually produce an unbranched stem with 1 - flowered inflorescences on slender peduncles. Their corolla lobes are linear and drawn out into long tails. They often grow among tall grasses where they are difficult to discern due to their grass-like appearance. In contrast, C. acicularis usually has a branched stem with a solitary flower and spatulate corolla lobes that apically unite into a cage-like structure (Fig. 3). Moreover, C. acicularis is usually found in open places and does not grow intermingled with grasses. Ceropegia tenuicaulis and C. thailandica are distinguished from each other by characters of stem and flower. Ceropegia tenuicaulis has a slender stem to 50 cm tall (inflorescence length not included). The corolla tube is slightly swollen at the base (swelling 1 / 2 length of corolla tube) and becomes narrowed distally. The corolla lobes are linear and drawn out into a long tail. The margin and inside of the lobes are covered with non-glandular hairs. In full bloom, the 5 lobes are loosely twisted and do not overlap. The basal part of the lobes is loosely twisted with slightly reflexed margins and green auricles. The stem of C. thailandica is stout, to only 15 cm tall (inflorescence length not included), the corolla tube is ovoid or urceolate and the corolla lobes are covered with glandular hairs. The basal part of the corolla lobes is dark purple with strongly reflexed auricles. Moreover, in full bloom, unlike in C. tenuicaulis, the five lobes of C. thailandica overlap and are dextrorsely tightly twisted and are usually inseparable because they are held together by the glandular hairs (Table 1, Fig. 3). Thorough surveys in northeastern and eastern Thailand have revealed that C. thailandica occurs in the Phu Wua Wildlife Sanctuary and in Phu Langka National Park, areas not far from each other (only about 30 km). Ceropegia acicularis and C. tenuicaulis occur in Pha Taem National Park, far to the north (about 400 km) of the areas where C. thailandica is distributed (Fig. 4). In conclusion, all data from the present study, as well as field observations on geographical distribution and ecological preferences, strongly indicate that C. acicularis and C. tenuicaulis are distinct and new species. As a further aid to identification, a key to these three taxa is presented below.	en	Kidyoo, Manit (2014): Two new species of Ceropegia (Apocynaceae, Asclepiadoideae) from eastern Thailand. Phytotaxa 162 (2): 91-98, DOI: 10.11646/phytotaxa.162.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.162.2.3
03DA673AFF83FFF3FF7FFAE7FEB9FAEF.taxon	materials_examined	— THAILAND. Ubon Ratchathani: Pha Taem National Park, 139 m, 11 September 2011, M. Kidyoo 1531 (BCU!).	en	Kidyoo, Manit (2014): Two new species of Ceropegia (Apocynaceae, Asclepiadoideae) from eastern Thailand. Phytotaxa 162 (2): 91-98, DOI: 10.11646/phytotaxa.162.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.162.2.3
03DA673AFF83FFF3FF7FFA53FEB9FA43.taxon	materials_examined	— THAILAND. Ubon Ratchathani: Pha Taem National Park, 230 m, 11 September 2011, M. Kidyoo 1530 (BCU!).	en	Kidyoo, Manit (2014): Two new species of Ceropegia (Apocynaceae, Asclepiadoideae) from eastern Thailand. Phytotaxa 162 (2): 91-98, DOI: 10.11646/phytotaxa.162.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.162.2.3
03DA673AFF83FFF3FF7FF9A1FC40F94C.taxon	materials_examined	— THAILAND: Bungkan: Phu Wua Wildlife Sanctuary, 30 July 2008, R. Pooma et al. 7347 (holo BKF!); ibid, Phu Wua Wildlife Sanctuary, 315 m, 13 August 2012, M. Kidyoo 1555 (BCU!); ibid, Phu Lungka National Park, 525 m, 12 August 2012, M. Kidyoo 1554 (BCU!).	en	Kidyoo, Manit (2014): Two new species of Ceropegia (Apocynaceae, Asclepiadoideae) from eastern Thailand. Phytotaxa 162 (2): 91-98, DOI: 10.11646/phytotaxa.162.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.162.2.3
