TABLE 1. Morphological comparison of Stellaria mcclintockiae with other members of thee Stellaria media group.

Characters	Stellaria mcclintockiae (present paper)	Stellaria cupaniana (El Mokni et al. 2023)	Stellaria media s.s. (El Mokni et al. 2023)	Stellaria neglecta (Lepší et al. 2019)	Stellaria pallida (Lepší et al. 2019; El Mokni et al. 2023)	Stellaria ruderalis (Lepší et al. 2019)
Bract	lanceolate	Ovate to oblong	ovate	linear-lanceolate	ovate or elliptical	Ovate to elliptical,
Sepal	lanceolate exceeding the length of bract	ovate to lanceolate, equaling the length of bract	ovate to lanceolate, equal length of bract	ovate to lanceolate less than the length of bract	linear-lanceolate equal to the length of bract	lanceolate to ovate-lanceolate, shorter than bract
Petal	dimorphic, with fimbriate apex and other with acute apex	shorter than sepals, apex obtuse	unimorphic, with rounded apex	unimorphic with acute or obtuse apex	Absent or very short, up to one-third of the length of sepals	deeply bifid, shorter than or as long as sepals, apex round
Gynoecium	ellipsoid	ovoid	ovoid	ovoid	ovoid	ovoid
Stamen	5–8	5	8–10	8–10	(1–) 2–3 (–4)	3–5(–10)
Capsule	elongate, double the length of persistent calyx	ovoid, glabrous, dehiscent capsule with ca. 15 seeds	ovoid, equals the length of persistent calyx	elliptical, shorter than the persistent calyx	ovoid, equaling the length of persistent calyx	elongate, longer then the sepal
Seed	tubercles sharp, pointed, conical with scattered papillae	conical tubercles less than 0.10 mm long	tubercles short, flat topped with abundant papillae	tubercles on seeds high, conical, higher than wide.	tubercles on seeds shorts, round to shortly conical, long as wide or slightly longer than wide	tubercles conical, longer than wide
Pollen	pore membrane not well differentiated, pores obscure with granular surface	data not available	pore membrane prominent, pores sunken with spinulose surface	data not available	data not available	data not available