Dubautia laxa Hook. & Arn. f. glabrescens Sherff, Amer. J. Bot. 20: 617 1933.
O`ahu, mountains behind Honolulu. 1840. U. S. Expl. Exped. s.n..
Holotype
[NY]. Isotype(s)
[GH! US!].
Dubautia laxa Hook. & Arn. subsp. bryanii (Sherff) G. D. Carr, Allertonia 4: 69 1985.
Dubautia laxa Hook. & Arn. subsp. hirsuta (Hillebr.) G. D. Carr, Allertonia 4: 67 1985.
Dubautia laxa Hook. & Arn. subsp. pseudoplantaginea (Skottsb.) G. D. Carr, Allertonia 4: 69 1985.
Dubautia laxa Hook. & Arn. var. blakei O. Deg. & Sherff, in Sherff, Bot. Gaz. (Crawfordsville) 96: 151 1934.
Maui, [West Maui], ridge N of Pohakea Gulch, in windy rain forest. 23 July 1927. Degener 4234.
Holotype
[F]. Isotype(s)
[B! [2], BISH! [3], BM, CAS! [4], F! [3], G! [4], GH!, K, MASS!, MO!, NY! [2, mfc!], P, PH, UC].
Dubautia laxa Hook. & Arn. var. bryanii Sherff, Amer. J. Bot. 20: 617 1933.
O`ahu, Koolauloa Mts., between Punaluu and Kaipapau. 3-8 May 1909. Forbes and Cooke s.n..
Holotype
[F]. Isotype(s)
[BISH! [3], BM, F!, GH!, K, MO!, NY!].
Dubautia laxa Hook. & Arn. var. greenwelliae O. Deg. & Sherff, in Sherff, Occas. Pap. Bernice P. Bishop Mus. 20(1): 18 1949.
O`ahu, near summit of Wiliwilinui Ridge, Wailupe. 610 m. 6 December 1948. Degener 19384.
Holotype
[F]. Isotype(s)
[F 2 sheets, NY [photos B!, BISH! 3 sheets, F 2 sheets]].
Dubautia laxa Hook. & Arn. var. hirsuta Hillebr., Fl. Hawaiian Isl. 223 1888.
Lana`i, forested mountain slopes. Hillebrand s.n..
Lectotype
[B]. Isolectotype(s)
[GH!, K]. Lectotypified in Sherff. Bernice P. Bishop Mus. Bull. 135: 100. 1935.
Dubautia laxa Hook. & Arn. var. hispida Sherff, Amer. J. Bot. 20: 617 1933.
September-October 1836. Gaudichaud-Beaupré 218.
Holotype
[G]. Isotype(s)
[GH!, photo of P at F!].
Dubautia laxa Hook. & Arn. var. intercedens O. Deg., I. Deg. & Sherff, in Sherff, Occas. Pap. Bernice P. Bishop Mus. 23(7): 123 1964.
Lana`i, near Pu`uali`i, in windy, shrubby rain forest. 2750 ft. 13 August 1963. Degener and Degener 28392.
Holotype
[F]. Isotype(s)
[B!, BISH!, G!, GH!, K!, MASS!, MO, NY [mfc!], US].
Dubautia laxa Hook. & Arn. var. obovata Sherff, Bot. Gaz. (Crawfordsville) 95: 80 1933.
O`ahu, on or near the summit of [Pu`u] Konahuanui. 2 November 1895. Heller 2902.
Holotype
[K]. Isotype(s)
[BISH! [2], F, GH, MO!, US!].
Dubautia laxa Hook. & Arn. var. pedicellata Rock, Indig. trees Haw. Isl. 501 1913.
Kaua`i, on ridge leading to Wai`ale`ale. 21 October 1911. Rock 8850.
Lectotype
[BISH]. Isolectotype(s)
[BM, F!, GH! 2 SHEETS [photo F!], K, UC, US!]. Lectotypified in G. Carr. Allertonia 4: 67. 1985.
Dubautia laxa Hook. & Arn. var. pseudoplantaginea Skottsb., Acta Horti Gothob. 2: 280 1926.
O`ahu, Nu`uanu-Kalihi Ridge. 500 to 600 m. 13 August 1922. Skottsberg 172.
Holotype
[GB]. Isotype(s)
[BISH!].
Dubautia laxa Hook. & Arn. var. skottsbergii Sherff, Field Mus. Nat. Hist. Bot. Ser. 17: 611 1939.
Kaua`i, Alaka`i, trail to Kilohana near beginning of the open bog, between Lehuamakanoi and main bog. 16 August 1938. Cranwell et al. 2976.
Holotype
[BISH].
Dubautia laxa Hook. & Arn. var. waianensis O. Deg. & Sherff, in Sherff, Bot. Gaz. (Crawfordsville) 96: 151 1934.
O`ahu, [Wai`anae Mts.], Mt. Ka`ala, in moderately wet locality. 2500 ft. 1929. Degener 4340.
Holotype
[F]. Isotype(s)
[BISH! [frag], NY [mfc!, photos B!, F!]].