| 1 |
Bulb of 3--10 fleshy scales and numerous small bulbels. |
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(2) |
| + |
Bulb of 2--4 fleshy, farinaceous scales, ± covered by marcescent remains of old scales, without bulbels. |
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(4) |
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| 2 (1) |
Leaves basal; bracts petaloid; tepals papillose-tuberculate adaxially |
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24 Fritillaria davidii |
| + |
Leaves cauline; bracts not petaloid; tepals not papillose-tuberculate adaxially. |
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(3) |
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| 3 (2) |
Leaves 6--18, basal usually opposite, middle and distal whorled or alternate |
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22 Fritillaria anhuiensis |
| + |
Leaves in 1(or 2) whorls of 3--6 |
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23 Fritillaria maximowiczii |
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| 4 (1) |
Stem and pedicels papillose-pubescent; leaves of 2 shapes, basal 2 different from and much larger than others; flowers slightly zygomorphic; nectary on 1 outer tepal much larger than others and spurred abaxially |
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21 Fritillaria karelinii |
| + |
Stem and pedicels glabrous; leaves similar to or slightly different from each other; flowers actinomorphic; nectaries similar. |
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(5) |
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| 5 (4) |
Bracts ovate to elliptic, 3--5 × as long as wide, apex obtuse or rounded. |
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(6) |
| + |
Bracts linear to linear-lanceolate, 8--20 × as long as wide, apex acuminate or cirrose. |
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(7) |
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| 6 (5) |
Anthers basifixed; capsule narrowly winged, ± enclosed by persistent tepals |
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19 Fritillaria delavayi |
| + |
Anthers subdorsifixed; capsule neither winged nor enclosed by persistent tepals |
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20 Fritillaria fusca |
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| 7 (5) |
Style subentire or slightly 3-lobed apically; lobes less than 1 mm. |
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(8) |
| + |
Styles 3-lobed apically; lobes (2--)3--8 mm. |
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(11) |
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| 8 (7) |
Filaments shorter than anthers; ovary longer than style |
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18 Fritillaria dajinensis |
| + |
Filaments equaling or longer than anthers; ovary shorter than style. |
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(9) |
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| 9 (8) |
Leaves 9--11, opposite, whorled, and alternate; bracts 3, apex cirrose |
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15 Fritillaria yuminensis |
| + |
Leaves 4--7, opposite and alternate, never whorled; bract 1, apex acuminate or curved. |
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(10) |
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| 10 (9) |
Tepals pale yellow, with a few blackish speckles |
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16 Fritillaria przewalskii |
| + |
Tepals blackish purple, tessellated with yellowish brown |
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17 Fritillaria unibracteata |
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| 11 (7) |
Bracts usually 1 per flower. |
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(12) |
| + |
Bracts 2 or 3 per flower. |
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(14) |
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| 12 (11) |
Leaves 2--4 cm wide; inflorescence usually 2--5-flowered |
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1 Fritillaria pallidiflora |
| + |
Leaves 0.5--1 cm wide; inflorescence usually 1-flowered. |
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(13) |
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| 13 (12) |
Leaves all alternate; capsule wingless |
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2 Fritillaria meleagroides |
| + |
Leaves opposite and alternate, sometimes also whorled; capsule narrowly winged |
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3 Fritillaria sichuanica |
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| 14 (11) |
Tepals white, sometimes tessellated with reddish color. |
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(15) |
| + |
Tepals greenish or yellowish, usually tessellated with purple or brown. |
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(16) |
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| 15 (14) |
Basal leaves much wider than others, ± spirally twisted basally |
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13 Fritillaria tortifolia |
| + |
Basal leaves slightly wider than others, not twisted basally |
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11 Fritillaria verticillata |
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| 16 (14) |
Leaves rather broad, basal ones 1.5--3 cm wide; tepals more than 4 cm. |
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(17) |
| + |
Leaves narrow, basal ones less than 1.5 cm wide; tepals often less than 4 cm. |
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(19) |
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| 17 (16) |
Nectaries 6--10 mm; style lobes 3--8 mm; bracts slightly cirrose at apex |
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9 Fritillaria monantha |
| + |
Nectaries 2--3 mm; style lobes 2--3 mm; bracts not cirrose at apex. |
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(18) |
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| 18 (17) |
Tepals yellow or greenish yellow, slightly tessellated with purple adaxially; leaves 10--18 |
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7 Fritillaria crassicaulis |
| + |
Tepals olive green, marked and tessellated with deep purple; leaves 3--8 |
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8 Fritillaria sinica |
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| 19 (16) |
Distal leaves and bracts strongly cirrose; leaves mostly whorled. |
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(20) |
| + |
Distal leaves and bracts curled or slightly cirrose; leaves mostly opposite or alternate, rarely whorled. |
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(21) |
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| 20 (19) |
Tepals greenish, tessellated with pink or purple; capsule winged |
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10 Fritillaria walujewii |
| + |
Tepals dark purple, heavily tessellated; capsule wingless |
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14 Fritillaria ussuriensis |
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| 21 (19) |
Inflorescence 1--6-flowered; tepals yellowish white, veined with green, 2.5--3 cm |
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12 Fritillaria thunbergii |
| + |
Inflorescence 1- or 2-flowered; tepals green to blackish purple, 3--5 cm. |
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(22) |
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| 22 (21) |
Bracts not cirrose at apex; tepals with dense, irregular, purple spots often merging to form larger mottling |
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5 Fritillaria taipaiensis |
| + |
Bracts slightly cirrose at apex; tepals with regular, purple spots and tessellations not merging. |
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(23) |
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| 23 (22) |
Nectaries elliptic to ovate, 3--5 × 2--3 mm; filaments sometimes papillose |
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4 Fritillaria cirrhosa |
| + |
Nectaries suborbicular, ca. 2 × 2 mm; filaments glabrous |
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6 Fritillaria yuzhongensis |
