Zeuxine Lindley 1826
Creators: name: Li, Lin
name: Li, Shi-Jin
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Zeuxine

description: Key to the species of Zeuxine from China   
1. Leaves linear to linear-lanceolate, not stalked, base directly sheathing stem.............................................................. 2.  
- Leaves ovate-lanceolate to elliptic, base contracted into a petiole-like stalk sheathing stem..................................... 3.  
 2. Plants 4–24 cm tall; ovary and sepals glabrous.................................................................................... Z. strateumatica   
 - Plants 20–35 cm tall; ovary and sepals pubescent............................................................................... Z. membranacea   
 3. Midvein of leaves marked with silvery blotches or a white line (also on lateral veins in Z. gengmanensis).............. 4.   
- Leaves uniformly green or occasionally tinged with red............................................................................................. 8.  
 4. Lip entire, rhombic, not adnate to column, base contracted and lacking calli..................................... Z. integrilabella   
- Lip bi-tripartite, base adnate to column, hypochile concave and containing 2 subulate, lamellate, or 2-3-digitate calli near base....................................................................................................................................................................... 5.  
5. Epichile of lip transversely dilated but as broad as or narrower than hypochile, entire to shallowly bilobed............ 6.  
- Epichile of lip dilated, broader than hypochile, distinctly bilobed.............................................................................. 7.  
 6. Ovary sparsely hairy; sepals hairy abaxially...................................................................................... Z. philippinensis   
 - Ovary glabrous; sepals glabrous........................................................................................................... Z. goodyeroides   
 7. Stem stout, ca. 5 mm in diam.; lateral veins of leaves marked with white lines; flowers pink; hypochile containing 2 short, rounded calli............................................................................................................................... Z. gengmanensis   
 - Stem slender, 1–2 mm in diam.; lateral veins of leaves without white lines; flowers white or pale yellow; hypochile containing 2 2-3-digitate to narrowly lamellate calli..................................................................................... Z. nervosa   
 8. Plants robust, 30–50 cm tall; leaves 5–12 × 3–7 cm.................................................................................... Z. odorata   
- Plants slender to robust, to 30 cm tall; leaves 2–6 × 1–3 cm....................................................................................... 9.  
9. Leaves not usually withering at anthesis; epichile of lip as broad as or narrower than hypochile............................ 10.  
- Leaves withering or pendulous at anthesis; epichile of lip dilated, broader than hypochile.................................... 11.  
 10. Leaves ovate-oblong, 3.0– 4.5 cm; bract entire, white hypochile containing 2 subulate, calli................. Z. agyokuana   
 - Leaves ovate, 1.7–2.2 cm; bract ciliate, yellow hypochile containing 2 2-3-digitate calli......................... Z. ovalifolia   
11. Lip T-shaped; epichile lobes diverging at right angles to axis of lip......................................................................... 12.  
- Lip Y-shaped; epichile lobes diverging at acute angles to axis of lip; epichile not mucronate at apex..................... 13.  
 12. Lip white..................................................................................................................................................... Z. parvifolia   
 - Lip yellow........................................................................................................................................................... Z. flava   
 13. Flower with lip 7–9 mm; hypochile containing 2 lamellate calli, each often with a linear extension; column wings lacking............................................................................................................................................................. Z. grandis   
- Flower with lip to 6 mm; hypochile containing 2 subulate, hooked calli; column with triangular or transversely oblong wings.............................................................................................................................................................. 14.  
 14. Epichile rotated gently downward; epichile lobes obovate-flabellate, 2.0–2.5 × 2.0– 2.2 mm........................ Z. affinis   
 - Epichile reflexed sharply downward from apex of mesochile; epichile lobes oblong to irregularly rhombic, 2.5–3.0 × 1.2–1.8 mm...................................................................................................................................................... Z. reflexa
description: Published as part of Li, Lin & Li, Shi-Jin, 2013, A new species of Zeuxine (Cranichidae; Orchidaceae) from Hainan, China, pp. 65-68 in Phytotaxa 129 (1) on page 67, DOI: 10.11646/phytotaxa.129.1.7, http://zenodo.org/record/5085704