First published in: Proc. Third Int. Conf. Cycad Biol.: 150. (1995).

Etymology: From the Latin simplex (‘simple’) and pinna (‘leaflet’), referring to the simple leaflets, in contrast to the divided leaflets of C. micholitzii, of which this species was initially regarded as a variety. [source]

Nomenclatural Synonyms:

• ≡ Cycas micholitzii var. simplicipinna Smitinand, Nat. Hist. Bull. Siam Soc. 24: 164, figs. 2-3, 4f. (1971).
  

Distribution: China (Yunnan), Laos (Saravan), ?Myanmar, Thailand (Chiang Mai, Loei, Mae Hong Song, Phrae), Vietnam (Quang Tri)

IUCN Red List Conservation Status: Near Threatened

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Thailand (Loei)

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