Table 1.

Morphological comparisons between Carexmalipoensis and species in C.sect.Euprepes.

Characters	C.malipoensis	C.atrivaginata	C.euprepes	C.laosensis	C.poilanei	C.tavoyensis	C.tricophylla	C.zizaniifolia
Culm
Length	70–105 cm	65 cm	70 cm	unknown	70–105 cm	unknown	45–65 cm	60–70 cm
Thick	2–4 mm	3 mm	3 mm	2 mm	2–3 mm	2–2.5 mm	1–1.5 mm	2 mm
Transverse angle	obtuse	acute	obtuse	obtuse	acute	acute, obtuse to subacute	obtuse	obtuse
Sides	ribbed	concave	concave	concave	concave	ribbed, slightly twisted	concave	concave
Indumentum	hispidulous	glabrous	glabrous	glabrous	glabrous	glabrous	hispidulous upward	glabrous
Leaf
Number	3–5	7	4–6	1–4	6–8	unknown	6 or more	8
Shape	elliptic	narrowly linear-lanceolate	elliptic	narrowly linear-lanceolate	narrowly linear-lanceolate	Linear-elliptic	elliptic, apex attenuated	narrowly elliptic or lanceolate
Length	12–28 cm	13–16 cm	17–24 cm	20–30 cm	18–30 cm	25–28 cm	12–18 cm	15–25 cm
Width	2–3 cm	1–1.3 cm	3–4.5 cm	8–15 mm	1–2 cm	2.3–3 cm	1.2–2 cm	2–2.5 cm
Indumentum	glabrous, sparsely hispidulous on undersurface midrib	glabrous, apex hispidulous	scabrid along veins undersurface	glabrous	glabrous	scabrid along veins undersurface	scabrid along veins undersurface	scabrid along veins
Leaf sheath
Length	1.5–7 cm	1.5–5 cm	1–2 cm	1.5–2 cm	2–5 cm	unknown	1.5–2 cm	1.4–2 cm
Indumentum	hispidulous	glabrous	glabrous below, hispidulous above	hispidulous	glabrous	glabrous	hispidulous	glabrous
Appendage of sheath mouth	not developed	not developed	prominent	small	small	small	prominent	small
Inflorescence
Shape	oblong	oblong	narrowly oblong	narrowly oblong	triangular-ovate	narrowly oblong	narrowly oblong	narrowly oblong
Length	20–45 cm	8–10 cm	10–22 cm	3.5–13.5 cm	12–20 cm	15–25 cm	3–15 cm long	5–6 cm
Width	3–5 cm	2–5 cm	3–4 cm	1–2.5 cm	3–6 cm	1–2 cm	1–2 cm	1–1.5 cm
Peduncles	exserted	exserted	scarcely or slightly exserted	scarcely exserted	exserted	scarcely exserted	exserted	scarcely exserted
Spikes
Length	15–30 (45) mm	10–25 mm	8–10 mm	5 mm	8–18 mm	5–9 mm	7–10 mm	5–6 mm
Male part vs female part	much longer	much longer	equal	longer	much longer	slightly longer	longer	slightly longer
Utricles
Shape	ovate-elliptic	ovate-elliptic	elliptic	broadly ellipsoid or ellipsoid-obovoid	ovate or rhomboid-ovate	ellipsoid or obovoid-ellipsoid	obovoid or ellipsoid-obovoid	ovate-elliptic
Length	6–7.5 mm	6–7.5 mm	4–4.5 mm	4–4.5 mm	4–5 mm	4–5 mm	6–6.5 mm	ca. 3 mm
Indumentum	densely hispidulous	densely hispidulous	glabrous, margins hispidulous	glabrous	unknown	glabrous below, adpressed-hispid above	glabrous below, adpressed-hispid above	densely hispidulous
nutlets	ca. 4 mm	ca. 4 mm	2.25–2.5 mm	2.25–2.8 mm	unknown	ca. 2.3 mm	2.25–2.5 mm	immature

The characters marked “unknown” for the missing description of the protologue or the original materials incomplete.