Amana, Honda, 1935

Wang, Meizhen, Wang, Ziyi, Zhang, Shenglu, Wu, Jing & Li, Pan, 2023, Amana yunmengensis (Liliaceae), a new species from the Yunmeng Lakes region, China, Phytotaxa 629 (1), pp. 13-34 : 20

Key to the genus Amana

1. Bracts usually two, opposite...............................................................................................................................................................2

- Bracts usually three, verticillate, or not verticillate (in this case reduced).........................................................................................3

2. Lower leaves linear; flowers 1–5; anthers yellow at maturity (before releasing pollen) ............................................... Amana edulis

- Lower leaves oblanceolate; flower mostly solitary, sometimes two; anthers purple at maturity (before releasing pollen)................. .............................................................................................................................................................................. Amana nanyueensis

3. Bracts usually not verticillate, reduced, 1.0–5.0 mm long .................................................................................... Amana wanzhensis

- Bracts verticillate, not reduced, longer than 12.0 mm........................................................................................................................4

4. Lower leaves linear, or linear to oblanceolate in the same population, always with a broad white band along the upper surface of midvein...............................................................................................................................................................................................5

- Lower leaves oblong or oblanceolate, sometimes with white veins or midvein, but not a broad white band ...................................6

5. Leaves green, linear, not oblanceolate................................................................................................................................................7

- Leaves green or brownish green to purple, linear to oblanceolate, 1–2 cm wide; purple-red streaks on the back of outer tepals ...... ..................................................................................................................................................................................... Amana latifolia

6. Anthers purple at maturity (before releasing pollen) .........................................................................................................................8

- Anthers yellow at maturity (before releasing pollen).........................................................................................................................9

7. Length of lower leaf less than 25 cm; purple-red on the back of outer tepals, with no obvious streaks............. Amana baohuaensis

- Length of lower leaf greater than 25 cm; purple-red stripes on the back of outer tepals.................................. Amana yunmengensis

8. Leaves green, with several white veins; bulb tunic sparsely villous inside ........................................................... Amana anhuiensis

- Leaves green, dark-green or purplish green, without white veins; bulb tunic glabrous inside ..................... Amana kuocangshanica

9. Leaves oblong; bulb tunic densely villous-woolly inside ................................................................................ Amana erythronioides

- Leaves oblanceolate; bulb tunic glabrous or sparsely villous inside................................................................................................10

10. Flowers pink, solitary ............................................................................................................................................. Amana hejiaqingii

- Flowers white, mostly solitary, sometimes two.................................................................................................... Amana tianmuensis