taxonID	type	description	language	source
3C1287F27D68C302FF790D0FCDCAF7E6.taxon	diagnosis	Diagnosis: — Most similar to P. cupuliformis, but differs by longer narrowly elliptic to lanceolate leaf blade, and longer and wider pedicellate flowers with obconic ovary higher than 1 mm.	en	Vislobokov, Nikolay A., Romanov, Mikhail S., Тanaka, Noriyuki, Nuraliev, Maxim S. (2023): Peliosanthes laotica (Asparagaceae), a new narrow-leaved species from Laos. Phytotaxa 609 (2): 151-156, DOI: 10.11646/phytotaxa.609.2.8, URL: http://dx.doi.org/10.11646/phytotaxa.609.2.8
3C1287F27D68C302FF790D0FCDCAF7E6.taxon	materials_examined	Type: — LAOS. Bolikhamsai province: Thaphabat district, Phou Khao Khouay National Biodiversity Conservation Area, near Tad Xai waterfall, rainforest, elev. 300 m, 18 ° 27 ’ 6.3 ’’ N, 103 ° 8 ’ 39.7 ’’ E, collected in nature on 9 December 2015 by N. A. Vislobokov, the herbarium specimen prepared from the living cultivated plant (garden number: 2015.11335) on 1 June 2023, M. S. Romanov 2301 (holotype MW: MW 0595839). Additional specimens examined (paratype): — LAOS. Bolikhamsai province: Thaphabat district, Phou Khao Khouay National Biodiversity Conservation Area, near Tad Xai waterfall, rainforest, elev. 300 m, 18 ° 27 ’ 6.3 ’’ N, 103 ° 8 ’ 39.7 ’’ E, 9 December 2015, N. A. Vislobokov 15041 (MW: MW 0751736). Specimen in living collection: — Living plant from the same gathering as the paratype (Vislobokov 15041), cultivated in the Main Botanical Garden of the Russian Academy of Sciences (Moscow), garden number: 2015.11335.	en	Vislobokov, Nikolay A., Romanov, Mikhail S., Тanaka, Noriyuki, Nuraliev, Maxim S. (2023): Peliosanthes laotica (Asparagaceae), a new narrow-leaved species from Laos. Phytotaxa 609 (2): 151-156, DOI: 10.11646/phytotaxa.609.2.8, URL: http://dx.doi.org/10.11646/phytotaxa.609.2.8
3C1287F27D68C302FF790D0FCDCAF7E6.taxon	description	Description: — Plant herbaceous, evergreen, perennial, entirely glabrous. Rhizome plagiotropic or ascending, 2.2 – 3.9 mm in diameter. Cataphylls chartaceous, 2.6 – 5.2 cm long, 8 – 9 mm wide. Roots grey, 1.5 – 2 mm in diameter. Foliage leaves green, petiolate, ascending or arching. Petiole rigid, adaxially sulcate, 10.5 – 17 cm long, 1 – 1.7 mm in diameter. Leaf blade narrowly elliptic to lanceolate, 12 – 15.5 cm long, 1.3 – 1.9 cm wide, base narrowly cuneate, apex acuminate, margin entire, with 6 – 9 longitudinal veins prominent on both sides. Inflorescence a raceme, about 4.5 cm long. Peduncle violet with green dots, erect, terete, c. 1 cm long, 1.7 – 2 mm in diameter, with 1 – 2 sterile bracts; sterile bracts green with violet dots along margin, lanceolate to narrowly lanceolate, 9 – 10 mm long, 1.5 – 2 mm wide. Rachis violet with green dots, 2.8 – 3.3 cm long, 1.3 – 1.7 mm in diameter, bearing about 15 – 17 flowers. Flower-subtending bracts pale green, scarious, lanceolate to narrowly lanceolate, 4.1 – 6.6 mm long, 1.3 – 2.1 mm wide. Flowers solitary in bract axils, facing horizontally or ascending. Pedicel violet with green dots, 1.3 – 2.1 mm long, 0.6 – 0.7 mm in diameter, articulated with ovary. Bracteole single, attached at pedicel base, transversal, pale green, scarious, lanceolate, 1.7 – 2.6 mm long, 0.5 – 0.8 mm wide. Perianth widely campanulate (saucer-like), 5.7 – 7.6 mm in diameter when fully open; perianth tube pale green, vanishingly short (up to c. 1.5 mm long), 2.1 – 2.5 mm in diameter; lobes 6, arranged in two whorls, homomorphic, pale green with violet margin on both sides, erect to slightly spreading, ovate, with margins slightly bent longitudinally on abaxial side, 1.7 – 2.5 mm long, 1.2 – 1.7 mm wide. Stamens 6; filaments united forming corona-like structure; corona-like structure pale green outside, violet mottled inside, fleshy, ring-shaped, round to obtusely hexagonal outside, inside with prominent broad protrusions towards flower centre in radii of tepals, 0.2 – 0.3 mm high, 2.8 – 3.2 mm in diameter; anthers 6, in radii of tepals, sessile, dorsally attached to upper portion of corona-like structure, 0.1 – 0.2 mm long, introrse. Ovary semi-inferior to almost inferior, pale green, obconic, 3 - locular, 1.7 – 1.8 mm high, 2.1 – 2.5 mm in diameter. Style dark violet, conical, 3 - lobed in top view, 0.5 mm high, 0.6 – 0.7 mm in diameter, bearing at top 3 - lobed stigma 0.1 mm in diameter. Fruits unknown.	en	Vislobokov, Nikolay A., Romanov, Mikhail S., Тanaka, Noriyuki, Nuraliev, Maxim S. (2023): Peliosanthes laotica (Asparagaceae), a new narrow-leaved species from Laos. Phytotaxa 609 (2): 151-156, DOI: 10.11646/phytotaxa.609.2.8, URL: http://dx.doi.org/10.11646/phytotaxa.609.2.8
3C1287F27D68C302FF790D0FCDCAF7E6.taxon	etymology	Etymology: — The specific epithet refers to the country of the type locality.	en	Vislobokov, Nikolay A., Romanov, Mikhail S., Тanaka, Noriyuki, Nuraliev, Maxim S. (2023): Peliosanthes laotica (Asparagaceae), a new narrow-leaved species from Laos. Phytotaxa 609 (2): 151-156, DOI: 10.11646/phytotaxa.609.2.8, URL: http://dx.doi.org/10.11646/phytotaxa.609.2.8
3C1287F27D68C302FF790D0FCDCAF7E6.taxon	biology_ecology	Phenology: — Flowering during June in cultivation.	en	Vislobokov, Nikolay A., Romanov, Mikhail S., Тanaka, Noriyuki, Nuraliev, Maxim S. (2023): Peliosanthes laotica (Asparagaceae), a new narrow-leaved species from Laos. Phytotaxa 609 (2): 151-156, DOI: 10.11646/phytotaxa.609.2.8, URL: http://dx.doi.org/10.11646/phytotaxa.609.2.8
3C1287F27D68C302FF790D0FCDCAF7E6.taxon	distribution	Distribution: — The species is known only from type locality.	en	Vislobokov, Nikolay A., Romanov, Mikhail S., Тanaka, Noriyuki, Nuraliev, Maxim S. (2023): Peliosanthes laotica (Asparagaceae), a new narrow-leaved species from Laos. Phytotaxa 609 (2): 151-156, DOI: 10.11646/phytotaxa.609.2.8, URL: http://dx.doi.org/10.11646/phytotaxa.609.2.8
3C1287F27D68C302FF790D0FCDCAF7E6.taxon	discussion	Taxonomic relationships: — In its flower structure, the new species is somewhat similar to P. cupuliformis Aver., N. Tanaka & K. S. Nguyen in Averyanov et al. (2020 b: 2). Nevertheless, P. laotica differs from P. cupuliformis in petiole 10.5 – 17 cm (vs 3 – 8 cm) long, leaf blade narrowly elliptic to lanceolate, 12 – 15.5 × 1.3 – 1.9 cm (vs elliptic, 4 – 7 × 1.4 – 2.8 cm), pedicellate (vs sessile) flowers, flowers 3.5 – 4.3 mm long and 5.7 – 7.6 mm in diameter (vs 2.9 – 3.3 mm long and 3.8 – 5.2 mm in diameter), ovary obconic (vs broadly obconic), 1.7 – 1.8 mm (vs less than 1 mm) high. In addition, Peliosanthes laotica is similar to P. griffithii Baker (1879: 506), but differs in leaf blade narrowly elliptic to lanceolate (vs oblanceolate-oblong or elliptic to broadly elliptic), leaf blade 1.3 – 1.9 cm (vs 2 – 5.7 cm) wide, pale green (vs dark purple-violet to almost black) perianth, and corona 0.2 – 0.3 mm (vs 1 – 1.6 mm) high (Baker 1879, Averyanov et al. 2016 a, Nguyen et al. 2017).	en	Vislobokov, Nikolay A., Romanov, Mikhail S., Тanaka, Noriyuki, Nuraliev, Maxim S. (2023): Peliosanthes laotica (Asparagaceae), a new narrow-leaved species from Laos. Phytotaxa 609 (2): 151-156, DOI: 10.11646/phytotaxa.609.2.8, URL: http://dx.doi.org/10.11646/phytotaxa.609.2.8
