The Genus Cyrtosperma

by Wilbert Hetterscheid

With 12 species, Cyrtosperma is a small genus. All species with the exception of C. merkusii are confined to New Guinea and associated islands. The wide spread of C. merkusii in Malesia is certainly due to it being transported by man because it was a major food crop once, though in that capacity it is now in decline.

Cyrtosperma species are slender to gigantic geophytes with a creeping rhizome and heavily armoured with prickly leaf stalks. The flowers are fully bisexual. They are often found in swampy conditions.

More information in Julius Boos' page on Cyrtosperma (click here)

Recent literature:

Dearden, A. & A. Hay, 2000. A new species of Cyrtosperma (Araceae) from West Papua. Aroideana 24: 102 - 104.
Hay, A., 1988. Cyrtosperma (Araceae) and its Old World allies. Blumea 33: 427 - 469.
Thompson, S.A., 1982. Cyrtosperma chamissonis (Araceae): ecology, distribution and economic importance in the South Pacific. J. Agric. Trad. Bot. Appl. 29(2): 185 - 203 (now C. merkusii). 

The species list below is based on Govaerts & Frodin, World Checklist and Bibliography of Araceae (2002)

Cyrtosperma afzelii (Schott) Engl. = Lasimorpha senegalensis Schott

Cyrtosperma americanum Engl. = Anaphyllopsis americana (Engl.) A. Hay

Cyrtosperma angustilobum Engl. = Podolasia stipitata N.E. Br.

Cyrtosperma bantamense Koord. = C. merkusii

Cyrtosperma beccarianum A. Hay

Cyrtosperma bougainvillense A. Hay

Cyrtosperma brassii A. Hay

Cyrtosperma carrii A. Hay

Cyrtosperma consobrinum Alderw. = C. macrotum

Cyrtosperma cuspidilobum Schott = C. merkusii

Cyrtosperma cuspidispathum Alderw.

Cyrtosperma dubium Schott = C. merkusii

Cyrtosperma edule Schott = C. merkusii

Cyrtosperma ferox N.E. Br. & Linden

Cyrtosperma giganteum Engl.

Cyrtosperma gressittiorum A. Hay

Cyrtosperma hambalii A. Dearden & A. Hay

Cyrtosperma hastatum Alderw. = C. macrotum

Cyrtosperma intermedium Schott = C. merkusii

Cyrtosperma janowskyi K. Krause = C. macrotum

Cyrtosperma johnstonii (N.E. Br.) N.E. Br.

Cyrtosperma kokodense A. Hay

Cyrtosperma lasioides Griff. = C. merkusii

Cyrtosperma macrotum Becc. ex Engl.

Cyrtosperma matrieffianum N.E. Br. = Anchomanes sp.

Cyrtosperma merkusii (Hassk.) Schott

Cyrtosperma merkusii var. giganteum Nadeaud = C. merkusii

Cyrtosperma merkusii var. intermedium (SChott) Engl. = C. merkusii

Cyrtosperma nadeaudianum J.W. Moore = C. merkusii

Cyrtosperma senegalense (Schott) Engl. = Lasimorpha senegalensis Schott

Cyrtosperma spruceanum (Schott) Engl. = Dracontium spruceanum (Schott) G. Zhu

Cyrtosperma subulispathum Alderw. = C. macrotum

Cyrtosperma syapense Alderw. = C. macrotum

Cyrtosperma wurdackii G.S. Bunting = Urospatha wurdackii (G.S. Bunting) A. Hay


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