aSPIDISTRA sPECIES
Morphological key to the species and varieties of Aspidistra from southern Vietnam
1. Leaves crowded at rhizome in groups by 2–5 | |
1. Leaves solitary | |
2. Perigone campanulate. Pistil cylindrical, 1.9–2.5 mm high | A. cylindrica Vislobokov & Nuraliev |
2. Perigone urceolate or tubular. Pistil mushroom-shaped or table-shaped, 3–7 mm high | |
3. Stigma conoid, 7 mm in diam, with irregular curly radial crests | A. carnosa Tillich |
3. Stigma peltate, orbicular, 1.5–2.5 mm in diam, 3-lobed | A. minutiflora Stapf |
4. Tepals completely fused into tube, leaving an opening of only 1–1.5 mm in diam | A. locii Arnautov & Bogner |
4. Tepals completely fused into tube, leaving an opening of only 1–1.5 mm in diam | |
5. Perigone lobes (2)3–4 | A. paucitepala Vislobokov, Nuraliev & D.D.Sokoloff |
5. Perigone lobes usually more than 4 (except individual flowers) | |
6. Perigone lobes usually 8 (rarely 9–10) | |
6. Perigone lobes usually 6 (rarely 4–8) | |
7. Stigma shortly obpyramidal, 8–10 mm in diam, adaxial surface dirty purple-violet, irregularly folded forming prominent radial ridges and deep grooves | A. elatior Blume var. vietnamensis Aver. & Tillich |
7. Stigma dome-shaped, 12–17 mm in diam, adaxial surface marmorate with dark and pale purple, smooth | |
8. Perigone lobes connate at their tips and forming cage around pistil. Bowl-shaped base of perigone 1 cm in diam (2–3 cm if lobes open) | A. connata Tillich var. connata |
8. Perigone lobes free, open upon maturity. Bowl-shaped base of perigone 1.8–2 cm in diam (3.5–5 cm if lobes open) | A. connata Tillich var. radiata Tillich & Škorničk. |
9. Stamens twice as many as perigone lobes | A. dodecandra (Gagnep.) Tillich |
9. Stamens in the same number as perigone lobes | |
10. Perigone campanulate or somewhat tubular | |
10. Perigone clearly urceolate | |
11. Perigone 10–14 mm in diam. Leaf lamina narrowly elliptic to linear, 1.2–2 cm wide | A. renatae Bräuchler |
11. Perigone 25–35 mm in diam. Leaf lamina lanceolate to elliptic, 3–10 cm wide | |
12. Flower upright. Perigone lobes stiff, upright, 35–40 mm long. Tepals free nearly to base, each adaxially with one very prominent median keel at proximal half | A. stricta Tillich |
12. Flower nutant. Perigone lobes flat, straight or slightly reflexed, 6–8(10) mm long. Tepals free for about half, without keels | A. truongii Aver. & Tillich |
13. Perigone lobes white or green adaxially. Perigone 13–16 mm in diam | |
13. Perigone completely purple (sometimes red mottled), 17–20 mm in diam | |
14. Stigma completely dark purple, with velvety appearance, lower half obconical, with 6 prominent longitudinal ridges, upper half truncated cone-shaped with numerous longitudinal grooves. Perigone lobes triangular, yellow-green, with 4 keels | A. mirostigma Tillich & Škorničk |
14. Stigma white or violet mottled, circular, disc-shaped, 3-lobed, each lobe distally bifurcate. Perigone lobes ligulate, white, with 2 keels | A. phanluongii N. Vislobokov |
15. Perigone mouth 6 mm in diam. Stigma 15 mm in diam, adaxial surface cream-coloured with purple tinge, rough with projections; abaxial surface smooth, purple tinged with cream-coloured 12-rayed star in centre | A. ventricosa Tillich & Škorničk. |
15. Perigone mouth 13 mm in diam. Stigma 10 mm in diam, uniformly smooth and white | |
16. Perigone dull-green, red mottled abaxially, with smooth surfaces | A. opaca Tillich var. opaca |
16. Perigone completely deep purple, with rugose surfaces | A. opaca Tillich var. rugosa Tillich |
Sourses: Vislobokov et al. (2016) Syst. Bot. 41(1):160-165.