Type Information
Dubautia laxa Hook. & Arn. , Bot. Beechey Voy. 87 1832.
O`ahu, s.l.. 1826- 1827. Lay and Collie s.n..
Lectotype [K]. Isolectotype(s) [G! [photo F!]]. Lectotypified in Sherff. Bernice P. Bishop Mus. Bull. 135: 97. 1935.
Note: Holotype: photo F!
*Verification: None.
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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!].

Note: Holotype: photo F!
*Verification: None.
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Dubautia laxa Hook. & Arn. subsp. bryanii (Sherff) G.D. Carr, Allertonia 4: 69 1985.

*Verification: R.K. Shannon.
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Dubautia laxa Hook. & Arn. subsp. hirsuta (Hillebr.) G.D. Carr, Allertonia 4: 67 1985.

*Verification: R.K. Shannon.
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Dubautia laxa Hook. & Arn. subsp. pseudoplantaginea (Skottsb.) G. D. Carr, Allertonia 4: 69 1985.

*Verification: R.K. Shannon.
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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].

Note: Additional isotypes: US! [2], W, WU, G-BOIS, G-DEL.
*Verification: R.K. Shannon.
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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!].

Note: G. Carr (Allertonia 4: 69. 1985) erroneously published the holotype as being at BISH. Sherff clearly stated that the type was at F, and the BISH sheet annotated by Carr as the holotype has "cotype" written on the label.
*Verification: R.K. Shannon.
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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]].

Note: (coll. A. Greenwell). Holotype: photos B! BISH! 4 sheets, F!, NY!
*Verification: None.
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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.

Note: Holotype: photos BISH!, F! There is a sheet of the Maui collection at MEL [photo BISH].
*Verification: None.
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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!].

Note: pro parte. Holotype: photo F!
*Verification: None.
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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!]].

Note: The BISH sheet has a long list of institutions for distribution of duplicates listed on the label.
*Verification: R.K. Shannon.
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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!].

Note: Collection 2902, pro parte. Sherff cited K sheet only, and added "pro parte" after collector number but did not explain why; in his monograph (1935: 97), however, he cited several other sheets of this collection under D. laxa var. laxa (F [2], G, GH, LE, NY, P [2]), excluding them from his new variety. Heller (1897:918) mentions that the "broad and narrow leaved forms being found side by side." Sherff was obviously segregating material of the two forms, naming the broad leaved one as D. laxa var. obovata. Sherff did not cite a date in the original publication, but cited 2 November in his monograph.
*Verification: Wagner, W.L. & R.K. Shannon. 1999. Brittonia 51:422-438.
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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.

Note: How/why did Carr pick this collection for lectotype? What are syntypes? What about Sherff's treatment (Bernice P. Bish. Mus. Bull. 135: 100. 1935)? (WLW, 1/95)
*Verification: R.K. Shannon, W.L. Wagner.
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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!].

Note: Holotype: photo F!
*Verification: R.K. Shannon.
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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].

Note: Holotype incorrectly stated as being at GB by Sherff.
*Verification: R.K. Shannon.
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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!]].

*Verification: R.K. Shannon.
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