taxonID	type	description	language	source
2041B84FDB4D503EB8787AF0A07075EC.taxon	description	Fig. 3	en	Hai, Do Van, Thien, Tran Duc, Quang, Bui Hong, Cuong, Nguyen The, Hao, Gang (2025): Novelties in the genus Ardisia (Primulaceae) from Vietnam: a new species and two new records. PhytoKeys 260: 51-62, DOI: 10.3897/phytokeys.260.154984
2041B84FDB4D503EB8787AF0A07075EC.taxon	distribution	Distribution. China (Guangxi, Hainan, Yunnan) and Vietnam (Lai Chau).	en	Hai, Do Van, Thien, Tran Duc, Quang, Bui Hong, Cuong, Nguyen The, Hao, Gang (2025): Novelties in the genus Ardisia (Primulaceae) from Vietnam: a new species and two new records. PhytoKeys 260: 51-62, DOI: 10.3897/phytokeys.260.154984
3A3B376E907859DFB341C4D7E69C9F8A.taxon	description	Fig. 4	en	Hai, Do Van, Thien, Tran Duc, Quang, Bui Hong, Cuong, Nguyen The, Hao, Gang (2025): Novelties in the genus Ardisia (Primulaceae) from Vietnam: a new species and two new records. PhytoKeys 260: 51-62, DOI: 10.3897/phytokeys.260.154984
3A3B376E907859DFB341C4D7E69C9F8A.taxon	distribution	Distribution. China (Yunnan) and Vietnam (Dien Bien, Lai Chau).	en	Hai, Do Van, Thien, Tran Duc, Quang, Bui Hong, Cuong, Nguyen The, Hao, Gang (2025): Novelties in the genus Ardisia (Primulaceae) from Vietnam: a new species and two new records. PhytoKeys 260: 51-62, DOI: 10.3897/phytokeys.260.154984
47317BC7CB175E12AA0E58350CC8A95C.taxon	description	Figs 1, 2	en	Hai, Do Van, Thien, Tran Duc, Quang, Bui Hong, Cuong, Nguyen The, Hao, Gang (2025): Novelties in the genus Ardisia (Primulaceae) from Vietnam: a new species and two new records. PhytoKeys 260: 51-62, DOI: 10.3897/phytokeys.260.154984
47317BC7CB175E12AA0E58350CC8A95C.taxon	diagnosis	Diagnosis. Ardisia dahoaiensis is the only species under this genus with the following combination of characters: leaves 6 – 12, alternate or forming a rosette, mainly clustered at the ends of branches, lamina subcoriaceous; margin entire or crenate in the upper part, with pustule-like structures along the crenations from projecting venation; inflorescence grows in extra axillary; flowers 5 – 7 merous; ovules ca. 16 – 18 arranged around on placenta.	en	Hai, Do Van, Thien, Tran Duc, Quang, Bui Hong, Cuong, Nguyen The, Hao, Gang (2025): Novelties in the genus Ardisia (Primulaceae) from Vietnam: a new species and two new records. PhytoKeys 260: 51-62, DOI: 10.3897/phytokeys.260.154984
47317BC7CB175E12AA0E58350CC8A95C.taxon	description	Description. Shrubs, 40 – 60 cm high, stem erect, usually not branched; young shoots villous, young stem pubescent; old stem smooth; base diameter ca. 5 – 7 mm. Leaves 6 – 12, alternate or forming a pseudo-verticillate, mainly clustered at the ends of branches; petioles 10 – 15 mm long, winged by the decurrent leaf base, covered with dense, white simple hairs; lamina subcoriaceous, with sparse black gland dots throughout abaxially, raised between the venation; leaf blade broadly elliptic or oblanceolate-obovate, 25 – 35 × 8 – 13 cm; young leaves purple, especially the veins, mature leaves dark green above, pale green beneath; base attenuate; margin entire or crenate in the upper part, with pustule-like structures along the crenations from projecting venation; apex acute, adaxial surface glabrous, abaxial surface copiously rusty villose especially on the midrib, and with many glandular dots, visible under hand lens; mid-rib flat above, raised below; lateral veins 12 – 18 pairs, irregularly spaced, with short intersecondary veins, slender, distinct but shorter than lateral veins, angle to the midrib about 45 ° - 50 °, arcuate upward and joining at the marginal vein, distinct on the adaxial surface, prominent on abaxial side; reticulation of veins visible. Inflorescence grows in extra axillary, 4 – 6 cm long, usually unbranched, 12 – 16 - flowered at the top, condensed racemose, forming short clusters or umbels; bracts foliaceous, linear to lanceolate, 3.5 – 3.8 × 0.6 – 0.7 cm, subsessile, apex acuminate, densely pubescent on both sides, margin revolute. Flowers 5 – 7 merous; pedicels purplish-red, 1.6 – 2 cm long, slender, puberulent. Calyx 5 - (- 7) lobed, 2.2 – 2.5 × 1.3 – 1.5 mm long, purplish-red, split to near base; lobes oblong-ovate, acute at apex; orange-pink punctate, margin minutely ciliolate, pubescent abaxially, glabrous adaxially. Corolla tube ca. 1.3 – 1.5 mm long, lobes 5 - (- 7), white to light pink except the pinkish along the mid-petal and pinkish base, covered with dense, brown gland dots, lobes broadly ovate, 6 – 6.5 × 4 – 4.5 mm, glabrous on both surfaces, apex acute and tips slightly folded inwards; stamens 5 - (- 7), yellowish, subsessile, anthers narrowly ovate-lanceolate, longer than filaments, 4 – 4.5 × 1.5 mm, apiculate, glabrous throughout, gland dotted abaxially, thecae not locellate, dehiscent by longitudinal slits. Ovary superior, ovoid, 1.5 – 1.6 × 1.3 – 1.4 mm, glabrous, gland dotted yellow; ovules 16 – 18 arranged around on placenta; style protruding beyond stamens, 2.5 – 3 mm long, irregularly curved and narrow to the apex, stigma minute. Fruit drupaceous, globose, 5 mm in diameter, young fruits green, glabrous, with gland dotted yellow, mature fruits red; pistil exists at the apex; exocarp thin, mesocarp white and soft, endocarp red and hard, has many longitudinally ribbed. Seed smooth, with holes at the base; endosperm white, thick, horizontal.	en	Hai, Do Van, Thien, Tran Duc, Quang, Bui Hong, Cuong, Nguyen The, Hao, Gang (2025): Novelties in the genus Ardisia (Primulaceae) from Vietnam: a new species and two new records. PhytoKeys 260: 51-62, DOI: 10.3897/phytokeys.260.154984
47317BC7CB175E12AA0E58350CC8A95C.taxon	distribution	Distribution and habitat. Endemic to Vietnam, Lam Dong Province (Da Hoai district); currently known only from the type locality. It grows under the shade of evergreen broad-leaved forest on soils and stone, at an elevation of 300 – 400 m alt.	en	Hai, Do Van, Thien, Tran Duc, Quang, Bui Hong, Cuong, Nguyen The, Hao, Gang (2025): Novelties in the genus Ardisia (Primulaceae) from Vietnam: a new species and two new records. PhytoKeys 260: 51-62, DOI: 10.3897/phytokeys.260.154984
47317BC7CB175E12AA0E58350CC8A95C.taxon	etymology	Etymology. The specific epithet of the new species refers to Da Hoai district (Lam Dong Province) in the Central Highlands of Vietnam, where it was first collected.	en	Hai, Do Van, Thien, Tran Duc, Quang, Bui Hong, Cuong, Nguyen The, Hao, Gang (2025): Novelties in the genus Ardisia (Primulaceae) from Vietnam: a new species and two new records. PhytoKeys 260: 51-62, DOI: 10.3897/phytokeys.260.154984
