Thismia

Lu, Chunyang, Yang, Haijun, Qin, Wenhao & Xu, Han, 2024, Thismia jinzun (Thismiaceae), a new species of Thismia Genus from Hainan Island, China, Phytotaxa 664 (4), pp. 273-280 : 278

Key to species of Thismia in China

1. Floral tube apex covered by a cucullate and zygomorphic annulus.............................................................................. T. malipoensis

– Floral tube apex with a ring-like and actinomorphic annulus ............................................................................................................2

2. Tepals free and mitre absent ...............................................................................................................................................................3

– Tepals connected into a loose dome or mitre .....................................................................................................................................5

3. Inner tepal appendage 1–4 mm long, shorter than floral tube................................................................................ T. guangdongensis

– Inner tepal appendage> 10 mm, longer than floral tube....................................................................................................................4

4. Floral tube white; inner tepal appendage orange red, ca. 17 mm long;apex of stamens with two teeth........................ T. tentaculata

– Floral tube gold yellow; inner tepal appendage gold yellow, 10–12 mm long;apex of stamens with three teeth.................. T. jinzun

5. Inner tepals fused into a mitre; stigma 2-lobed ........................................................................................................ T. gongshanensis

– Inner tepals forming a loose dome; stigma 3-lobed ...........................................................................................................................6

6. Inner tepal appendage ca. 30 mm long.......................................................................................................................... T. taiwanensis

– Inner tepal appendage shorter than 5 mm ...........................................................................................................................................7

7. Inner tepal appendage ca. 1 mm long; stamen connective apex with glandular hairs.......................................................... T. huangii

– Inner tepal appendage 3–4 mm long; stamen connective apex without glandular hairs....................................................................8

8. Floral tube pinkish white; outer lobes separated from dome ................................................................................... T. hongkongensis

– Floral tube deep orange-red; outer lobes embedded in dome............................................................................... T. jianfenglingensis