Haplostachys haplostachya (A. Gray) H. St. John , Pacific Trop. Bot. Gard. Mem. 1: 371. 1973.
*Verification: None.

Type Information
Basionym: Phyllostegia haplostachya A. Gray , Proc. Amer. Acad. Arts 5: 345 1862 [Jan].
Maui, sand hills [of the low isthmus]. 1840. U. S. Expl. Exped. s.n..
Holotype [US]. Isotype(s) [GH [fragment]].
Note: Sherff (1935) cited 2 sheets at US.
*Verification: R.K. Shannon; Wagner, W.L. 1999. Novon 9:265-279.
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Basionym: Phyllostegia haplostachya A. Gray var. leptostachya A. Gray, Proc. Amer. Acad. Arts 5: 345 1862 [Jan].
Kaua`i, mts., [on barren ridges]. 1840. U. S. Expl. Exped. s.n..
Holotype [US]. Isotype(s) [GH, K!, NY].

*Verification: R.K. Shannon, W.L. Wagner; Wagner, W.L. 1999. Novon 9:265-279.
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