Chingia

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Chingia

Distribution

Asia-Tropical: Pacific: present Peninsular Thailand: present Tahiti: present mainland Asia: present
Malesia and the Pacific (to Tahiti); in Mainland Asia only to Peninsular Thailand; in all 20 species.

Cytology

Chromosome number 36 (C. atrospinosa, C. urens, both diploid).

Notes

This very natural group appears to be closely related to Plesioneuron but not to any other genus of the present arrangement. Ching and Copeland placed the species known to them in Cyclosorus without distinguishing them as a natural group. The nature and distribution of scales are distinctive in the various species, and some early collections do not show these characters adequately. New information has recently been added by the collections of M. G. Price in the Philippines where seven species occur. Chemical investigation might yield interesting results; two species are recorded as malodorous, and one (C. urens) as causing a mild burning sensation in contact with human skin.
Plants of Glaphyropteridopsis Ching (type species G. erubescens (Hook.) Ching, distributed from N.E. India to S. China) are similar to Chingia in frond-form, but the veins are always free, aerophores swollen, and the spores and scales are very different; the two are probably not very nearly related.

Citation

Holttum - in Kalikasan. 1974