Zingiber cochleariforme
Creators: name: Wang, Qing-Long
name: Yuan, Lang-Xing
name: Tang, Huan
name: Bai, Lin
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Zingiberales
Zingiberaceae
Zingiber
Zingiber cochleariforme

description: A key to species in the “ Z. cochleariforme group”
1a. Petioles 1.5–4 cm long (including pulvini and narrowed bases of laminae)......................................................................................2
1b. Petioles less than 1 cm long, comprising the pulvinus only...............................................................................................................3
2a. Ligules 1.2–3 cm long ................................................................................................................................................ Z. vuquangense
2b. Ligules less than 0.8 cm long .............................................................................................................................................................4
4a. Each leafy shoot possesses less than 10 laminae.............................................................................................................. Z. inodorum
4b. Each leafy shoot possesses 20–23 laminae .......................................................................................................... Z. cornubracteatum
3a. Each leafy shoot possesses less than 10 laminae................................................................................................................................5
3b. Each leafy shoot possesses 11–22 laminae.........................................................................................................................................6
5a. Laminae more than 10 cm wide, bracts acuminate to narrowly attenuate at apices ............................................... Z. arunachalensis
5b. Laminae less than 10 cm wide, bracts acute to obtuse at apices ........................................................................................................7
7a. Bracts 0.5–1.5 cm wide, involute on both sides, loosely arranged; corolla lobes pale yellow, often with dark red purple tinge; anther crest dark red purple ................................................................................................................................................. Z. pleiostachyum
7b. Bracts 2.2–2.6 cm wide, flat and imbricating; corolla lobes white; anther crest cream white...................................... Z. bipinianum
6a. Labellum cream..................................................................................................................................................................................8
6b. Labellum red, pink to purple, pure colour or with cream spots or striations .....................................................................................9
8a. Bracts green with purple tinge when flowering .......................................................................................................... Z. guangxiense
8b. Bracts red when flowering......................................................................................................................................... Z. meghalayense
9a. Bracts flat, compact when flower.....................................................................................................................................................10
9b. Bracts strongly involute on both sides, loosely arranged when flower............................................................................................11
10a. Bracts spathulate, apices truncate (at least the outermost ones) and often incurve, cream at bases but with dark purple tinge at apices ....................................................................................................................................................................... Z. cochleariforme
10b. Bracts ovate to narrowly ovate, apices not truncate and incurve, red throughout............................................................................12
11a. Bracts red....................................................................................................................................................................... Z. recurvatum
11b. Bracts green with purple tinge when flowering ...............................................................................................................................13
12a. Lamina 3–6 cm wide ................................................................................................................................................. Z. mizoramensis
12b. Lamina 13–16 cm wide ................................................................................................................................................. Z. salarkhanii
13a. Labellum 2–6 mm wide at widest point ........................................................................................................................ Z. hainanense
13b. Labellum 8–13 mm wide at widest point .........................................................................................................................................14
14a. Labellum purplish red............................................................................................................................................... Z. pleiostachyum
14b. Labellum cream, sometimes tinged pink to purple at upper part ................................................................................ Z. guangxiense
description: Published as part of Wang, Qing-Long, Yuan, Lang-Xing, Tang, Huan & Bai, Lin, 2024, Zingiber inodorum (Zingiberaceae: Zingiberoideae), a new species of Z. sect. Cryptanthium from Hainan, China, pp. 281-289 in Phytotaxa 653 (3) on page 286, DOI: 10.11646/phytotaxa.653.3.7, http://zenodo.org/record/13217041