Paphiopedilum charlesworthii var. lannaense, a new slipper orchid from Northern Thailand identified by morphological and AFLP analyses Author Tongkham, Wicharuj 0000-0002-1882-1486 Center of Excellence on Agricultural Biotechnology: (AG-BIO/MHESI), Bangkok, 10900, Thailand & big.paphio@gmail.com; https://orcid.org/0000-0002-1882-1486 big.paphio@gmail.com Author Pumikong, Supalak 0000-0003-1708-7520 Queen Sirikit Botanic Garden, Mae Rim, Chiang Mai, 50180, Thailand & supalak.pumikong@gmail.com; https://orcid.org/0000-0003-1708-7520 supalak.pumikong@gmail.com Author Potapohn, Nuttha 0000-0002-9779-0218 natorchid@gmail.com; https://orcid.org/0000-0002-9779-0218 natorchid@gmail.com Author Bundithya, Weenun 0000-0002-3754-8323 Center of Excellence on Agricultural Biotechnology: (AG-BIO/MHESI), Bangkok, 10900, Thailand & weenun.b@cmu.ac.th; https://orcid.org/0000-0002-3754-8323 weenun.b@cmu.ac.th text Phytotaxa 2022 2022-01-13 531 1 1 17 journal article 2625 10.11646/phytotaxa.531.1.1 1b2f793a-b4de-4657-aa5e-c7d9313e3c2d 1179-3163 5843455
TABLE. Morphological comparison of P. charlesworthii var. lannaense, P. charlesworthii, P. barbigerum var. coccineum and P. barbigerum var. sulivongii .
CharacteristicsP. charlesworthii var. lannaenseP. charlesworthiiP. barbigerum var. coccineumP. barbigerum var. sulivongii
LeafLinear-oblong, slightly obtuse and unequally bilobulate at apex, 2.0–2.5 cm wide, 10–15 cm long, dark greenOblong-elliptic to linear-oblong, acute and tridenticulate at apex, 1.8–2.2 cm wide, 15–25 cm long, dark greenLinear-oblong, slightly obtuse to rounded, unequally bilobulate at apex, 1.2–1.5 wide, 10–15 cm long, greenLinear-oblong, slightly obtuse to rounded, unequally bilobulate at apex, 2.0–2.5 wide, 15–25 cm long, dark green
Peduncle9 15 cm long, shortly pubescent, green, densely spotted brownish purple8 15 cm long, shortly pubescent, pale green, densely spotted dark maroon10 15 cm long, shortly pubescent, green, densely spotted brownish purple12–18 cm long, shortly pubescent, green, densely spotted brownish purple
Flower5.5 6.5 cm across6.5–8.0 cm across6.5–7.5 cm across8.0–10 cm across
Dorsal sepalOvate - elliptic to ovate, obtuse, 3.0 4.0 cm wide, 4.0 4.5 cm long, basal margins slightly recurved, apical margins incurved and undulate, purplish pink to white, with reddish purple veinsBroadly ovate to nearly round, obtuse, 4.7–7.0 cm wide, 4.5–5.7 cm long, apical margins slightly undulate, purplish pink to pale pink, with reddish purple veinsOvate - elliptic, obtuse, 3.0 4.0 cm wide, 4.2 4.5 cm long, basal margins recurved, apical margins strongly incurved, white, with the central flushed red - purple, brown - yellow nerves at baseOvate - elliptic, obtuse, 3.0–3.5 cm wide, 4.0–4.5 cm long, basal margins recurved, apical margins incurved and undulate, white, with reddish brown veins, yellow at base
SynsepalOblong - elliptic, subacute to obtuse, 2.0 2.5 cm wide, 3.5 4.0 cm long, pale yellow - green with reddish brown veinsOblong - elliptic, subacute, 2.0 2.8 cm wide, 3.8 4.0 cm long, pale yellow - green with reddish brown veinsElliptic, obtuse, 2.0 2.5 cm wide, 3.5 3.8 cm long, pale yellow to white with reddish brown veinsOblong - elliptic, subacute, 2.0–2.3 cm wide, 3.5–4.0 cm long, pale yellow - green with reddish brown veins
PetalNarrowly oblong, incurved, 0.8 1.0 cm wide, 3.8–4.5cm long, rounded and slightly twisted at apex, pale greenish yellow with brown veinsOblanceolate to narrowly oblong, incurved, rounded at apex, 1.0 1.6 cm wide, 4.0–4.4 cm long, slightly twisted at apex, pale greenish yellow with brown veinsNarrowly oblong, incurved, rounded at apex, 1.0 1.2 cm wide, 4.0–4.5 cm long, undulate margins, pale greenish yellow with brown veinsOblanceolate to narrowly oblong, incurved, rounded at apex, 0.8–1.0 cm wide, 4.5–5.0 cm long, undulate margins, pale greenish yellow with brown veins
LabellumSaccate, tapering to narrow apex, 2.0–2.4 cm wide, 3.0–3.5 cm long, brownish yellow with reddish brown veinsSaccate, tapering to apex, 2.6–2.8 cm wide, 3.8–4.4 cm long, greenish yellow with purplish brown veinsSaccate, tapering to apex, 2.5–2.8 cm wide, 3.6–4.4 cm long, brownish yellow with reddish brown veinsSaccate, tapering to narrow apex, 2.3–2.5 cm wide, 3.0– 3.5 cm long, brownish yellow with reddish brown veins
StaminodeObovate - obcordate, 0.9–1.0 cm wide, 0.9–1.0 cm long, rough surface, glittery, yellow color with raised yellow wartObovate, 1.0–1.1 cm wide, 1.0–1.2 cm long, thick, glabrous, white with a slightly raised yellow wartElliptic - obovate to obcordate, 1.0–1.2 cm wide, 1.0–1.1 cm long, thick, rough surface, brown - yellow with raised yellowish orange wartElliptic-obovate to obcordate, 1.0–1.2 cm wide, 1.2–1.5 cm long, thick, rough surface, glittery, yellow with raised yellowish orange wart
Flowering periodJuly–SeptemberSeptember–NovemberSeptember–NovemberSeptember–November
DistributionNorthern Thailand, Lampang provinceMyanmar, southwestern China, and northern ThailandNorthern VietnamCentral Laos, Bolikhamxai province