taxonID	type	description	language	source
0E978B556A83593BA640A70D0F30C5B2.taxon	description	Figs 1, 2, 3, 4	en	Promprom, Wilawan, Munglue, Phukphon, Chatan, Wannachai (2024): Ardisia crenata subsp. mukdahanensis, a new subspecies of Primulaceae from Thailand. PhytoKeys 247: 1-10, DOI: 10.3897/phytokeys.247.126743
0E978B556A83593BA640A70D0F30C5B2.taxon	diagnosis	Diagnosis. Ardisia crenata subsp. mukdahanensis is closely related to subsp. crassinervosa. However, the morphological distinctions of the new subspecies from the latter are as follows: moderately dense, minute hairs are present on the surfaces of young shoots, the abaxial side of the lamina (with very few or sparse hairs on older ones), peduncles, pedicels and the abaxial side of the calyx of the new subspecies, while they are absent in the latter. It has larger flowers (7.0 – 7.5 mm) that are typically pure white or pinkish. The fruits are mostly larger (7 – 8 mm in diameter) and glandular punctation is absent in the lamina, calyx, corolla, anther and fruit in the new subspecies, whereas they are present in the latter.	en	Promprom, Wilawan, Munglue, Phukphon, Chatan, Wannachai (2024): Ardisia crenata subsp. mukdahanensis, a new subspecies of Primulaceae from Thailand. PhytoKeys 247: 1-10, DOI: 10.3897/phytokeys.247.126743
0E978B556A83593BA640A70D0F30C5B2.taxon	description	Description. Shrubs 40 – 100 cm high; branchlets slender, terete or angular, striate, generally each branch bearing more than 10 leaves. Leaves alternate, petioles 0.4 – 2.0 cm long; lamina subcoriaceous, oblanceolate or oblanceolate-oblong, 5 – 20 × 1.5 – 4 cm; base cuneate or attenuate; margin distinctly crenate and recurved, with large marginal glands on sinuses; adaxial surface glabrous or glabrescent, glandular dots absent; apices mostly obtuse, rarely acute; abaxial surface with very few minute hairs and sparsely hairs on the mid-rib, glandular dots absent; veins distinct; intramarginal veins present at 1.5 – 2.5 mm from the lamina edge at the middle between the marginal glands and those veins close to the margin by joining to the marginal glands. Inflorescences sub-umbellate or corymbiform, mostly simple or occasionally compound, terminal on branchlets; peduncles 0.4 – 0.5 cm long moderately dense minute hairs on the surface; bract oblong and V-shaped, 8 – 11 × 2.0 – 2.5 mm, primary rachis 2 – 6 mm long; pedicels 8 – 10 mm long, cylindrical, green, surface with moderate hairs. Calyx of 5 - lobes, split almost to the base, pale green on both surfaces, distinctly imbricate at base; lobes broadly ovate, 3.0 – 3.5 × 2.5 – 3.0 mm, glandular-dots absent, apices acute or obtuse, margin entire and translucent, adaxially glabrous, abaxially covered with moderately dense minute hairs. Corolla of 5 - lobes, connate at about 1 mm at the base, pure white or pinkish, sometimes pinkish only at base and centre, thick and succulent, lobes convolute in bud, broadly ovate, concavo-convex, 7.0 – 7.5 × 4.5 – 5 mm, glandular-dots absent on both surfaces, apex mucronate with curved mucro. Stamen 5; filament whitish, ca. 1 mm long; anther lanceolate, yellow, 5.0 – 5.5 × 1.8 – 2.1 mm, apex acute, glandular dots absent. Gynoecium length is longer than the stamen; ovary globose, 1.4 – 1.6 mm diameter, green, glabrous, 7 locules, 1 ovule in each locule, ovules in 1 - series; styles about 4.5 – 5.0 mm long, irregularly curved and narrow to the apex, sparsely minute hairs on the lower half; stigma minute. Fruits young green, mature red, globose, 7 – 8 mm diameter, glandular dots absent. Seed globular, 4.0 – 4.5 mm diameter, brown.	en	Promprom, Wilawan, Munglue, Phukphon, Chatan, Wannachai (2024): Ardisia crenata subsp. mukdahanensis, a new subspecies of Primulaceae from Thailand. PhytoKeys 247: 1-10, DOI: 10.3897/phytokeys.247.126743
0E978B556A83593BA640A70D0F30C5B2.taxon	distribution	Distribution. Ardisia crenata subsp. mukdahanensis is an endemic to Thailand. So far, it has been only found in the type locality in Dong Luang District, Mukdahan Province. Its distribution is shown in Fig. 5.	en	Promprom, Wilawan, Munglue, Phukphon, Chatan, Wannachai (2024): Ardisia crenata subsp. mukdahanensis, a new subspecies of Primulaceae from Thailand. PhytoKeys 247: 1-10, DOI: 10.3897/phytokeys.247.126743
0E978B556A83593BA640A70D0F30C5B2.taxon	etymology	Etymology. The specific epithet ‘ mukdahanensis ’ refers to its type locality, the Mukdahan Province, in the northeast of Thailand.	en	Promprom, Wilawan, Munglue, Phukphon, Chatan, Wannachai (2024): Ardisia crenata subsp. mukdahanensis, a new subspecies of Primulaceae from Thailand. PhytoKeys 247: 1-10, DOI: 10.3897/phytokeys.247.126743
