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PLANT FAMILY: Costaceae
BOTANICAL NAME: Costus pistiifolius
FORMAL SCIENTIFIC NAME:
This African species is placed in synonymy with Costus spectabilis (PID3608) in Paul Maas' monograph on African Costaceae, published on 16 December 2016. (Monograph of African Costaceae, H. Maas-van de Kamer, P.J.M. Maas, J.J. Wieringa, C.D. Specht, Blumea 61, 2016: 280 - 318, http://www.ingentaconnect.com/content/nhn/blumea/2016/00000061/00000003/art00010)
The African Plant Database lists this species as rejected, is synonym of : Costus spectabilis (Fenzl) K. Schum
Schumann describes this species and places in subgenus Cadalvena - Das Pflanzenreich IV, 1904.
Cadalvena pistiaefolia, Baker. - Flora of Tropical Africa, 1898 - describes this species, Cadalvena listed as separate genus, distinguishes C. pistiaefolia (note spelliing) from C. spectabilis, leaves NOT imbricated, leaves thickened and spongy at base. Distribution limited to "Lower Guinea", compared with C. spectabilis more widely distributed."2. C. pistiaefolia, Baker. Closely allied to C. spectabilis, butleaves more cuneate and not imbricated, thickened and spongy at thebase, as in Pistia, ovary shorter, corolla-lobes broader and anthercellsonly half as long.-Costus pisticefolius, Schumann in Engl. J ahrb.Xv. 424.:Lower Guinea. .Angola:in woods at Malange,Teuscz, 315!No specimen in the Kew Herbarium."
Lock, Flora of Tropical East Africa, 1985, says it is a syn. For C. spectabilis.