REVISION OF THE HAWAIIAN SPECIES OF THE GENUS 
CYRTANDRA, SECTION CYLINDROCALYCES HILLEBR. 
Joseph F. Rock 
Introduction 
The genus Cyrtandra is represented in the Hawaiian Islands by a 
considerable number of species. To the 32 enumerated by C. B. 
Clarke in his monograph, several new ones have already been added 
and there still remain to be described at least seven species and as 
many varieties. 
It is to be regretted that much confusion exists in the taxonomy 
of the Hawaiian species. This was mainly caused through the works 
of C. B. Clarke and Hillebrand, both of whom described the same 
species of Cyrtandrae contemporaneously, the one not being aware 
of the other's labors. 
C. B. Clarke's monograph, as far as Hawaiian species are con- 
cerned, is based mainly on the collections of Gaudichaud, Barclay, 
Wawra, Mann and Brigham, Nuttall, Asa Gray, and partly on speci- 
mens forwarded by Hillebrand with manuscript names. 
Hillebrand had evidently not forwarded a complete set of his 
duplicates to Berlin and Kew, for practically none of the Hillebrand 
material in the Berlin Herbarium bears C. B. Clarke's determinations, 
whereas they are present on all specimens collected by Gaudichaud, 
Wawra and other earlier botanists, whose material is deposited in the 
various herbaria of Europe and America. 
In the Berlin Herbarium, where the writer was privileged to work 
on the Hawaiian collection, he found C. B. Clarke and Hillebrand 's 
species still in separate covers, notwithstanding the fact that Hille- 
brand 's species, or at least some of them, are identical with Clarke's 
species. 
For example, Hillebrand's Cyrtandra latehrosa (Fl. Haw. Isl. 337. 
1888) is Cyrtandra longifolia Hillebr. var. degenerans C. B. Clarke, 
and published as such in the latter's monograph on the tribe Cyrtan- 
dreae. Hillebrand distributed material of this species under Cyrtandra 
longifolia, which name was adopted by Clarke, giving Hillebrand credit 
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