Plantago princeps Cham. & Schltdl. var. aquatilis Wawra, Flora 57: 565. 1874.
Type information:
Holotype
[W]. H. Wawra 2013a. 1869- 1870. Kaua`i: Hanalei and Hanapepe waterfalls.
=Plantago princeps var. longibracteata
Plantago princeps Cham. & Schltdl. var. denticulata Hillebr., Fl. Hawaiian Isl. 364. 1888.
Type information:
Syntype
Plantago princeps Cham. & Schltdl. var. hirtella A. Gray, Proc. Amer. Acad. Arts 6: 54. 1862.
Type information:
Holotype
[US]. U. S. Expl. Exped. s.n.. 1840. Kaua`i: mts. [on tabular summit]. Isotype(s)
[GH].
=Plantago princeps var. anomala
Plantago princeps Cham. & Schltdl. var. laxifolia A. Gray, Proc. Amer. Acad. Arts 6: 54. 1862.
Type information:
Holotype
[US]. U. S. Expl. Exped. s.n.. 1840. Hawai`i: [at N base of Mouna Kea, among stones at sea-side]. Isotype(s)
[GH].
=Plantago princeps var. laxifolia
Plantago princeps Cham. & Schltdl. var. longibracteata H. Mann, Proc. Amer. Acad. Arts 7: 189. 1867.
Type information:
Holotype
[GH]. H. Mann and W.T. Brigham 612. 1864- 1865. Kaua`i: Wai`oli Valley, Hanalei, on wet rocks.
=Plantago princeps var. longibracteata
Plantago princeps Cham. & Schltdl. var. queleniana (Gaudich.) Rock, Amer. J. Bot. 7: 199. 1920.
Plantago princeps Cham. & Schltdl. var. elata Wawra, . .
Plantago princeps Cham. & Schltdl. , Linnaea 1: 167. 1826.
Plantago princeps Cham. & Schltdl. f. erecta Wawra, Flora 57: 565. 1874.
Type information:
Holotype
[W]. H. Wawra 2013b. 1869- 1870. Kaua`i: Hanalei and Hanapepe waterfalls.
=Plantago princeps var. longibracteata
Plantago princeps Cham. & Schltdl. var. acaulis Wawra, Flora 57: 564. 1874.
Type information:
Holotype
[W]. H. Wawra 1728a. 1869- 1870. O`ahu: above Pali, on clay location.
=Plantago princeps var. longibracteata
Plantago princeps Cham. & Schltdl. var. anomala Rock, Amer. J. Bot. 7: 203. 1920.
Type information:
Holotype
[GH]. A.A. Heller 2610. 23 July 1895. Kaua`i: Hanapepe Valley, ridge opposite Gay and Robinson's Hanapepe Valley house. Isotype(s)
[A].