Cyrtandra platyphylla A. Gray, Proc. Amer. Acad. Arts 5: 350. 1862 [Jan].
Type information:
Holotype [US]. U. S. Expl. Exped. s.n.. 1840. Hawai`i: in forests near Kilauea Volcano. Isotype(s) [GH].

Note: St. John (Rhodora 87: 592. 1985) incorrectly states the GH sheet as the holotype. Holotype mounted on two sheets. Also on US-58323!.

=Cyrtandra platyphylla
Note: St. John (Rhodora 87: 592. 1985) incorrectly states the GH sheet as the holotype. Holotype mounted on two sheets. Also on US-58323!.

*Verification: None.

Cyrtandra platyphylla A. Gray var. brevipes Skottsb., Acta Horti Gothob. 15: 444. 1944.
Type information:
Lectotype [BISH]. L.M. Cranwell , O. Selling and C. Skottsberg 3178. 9 September 1938. Hawai`i: Kohala Mountains, Upper Hamakua ditch trail at head of Koi`awe Valley.

Note: Lectotype here designated. Additional syntype: between Koi`awe and Alakahi valleys, about 1100 m, 8 Sept. 1938 (Cranwell et al. 3178b, BISH). These two collections were cited; the choice is arbit

=hybrid of Cyrtandra paludosa var. paludosa x C. platyphylla
Note: Lectotype here designated. Additional syntype: between Koi`awe and Alakahi valleys, about 1100 m, 8 Sept. 1938 (Cranwell et al. 3178b, BISH). These two collections were cited; the choice is arbit

*Verification: None.

Cyrtandra platyphylla A. Gray var. f. ovata Rock, Amer. J. Bot. 5: 272. 1918.
Type information:
Holotype [BISH]. J. F. Rock 4495. 6 July 1909. Hawai`i: Mauna Kea, Pa`auhau Forest No. 3.1160m. Isotype(s) [BISH! [3]].
=hybrid of Cyrtandra paludosa var. paludosa x C. platyphylla

*Verification: None.

Cyrtandra platyphylla A. Gray var. hiloensis Rock, Amer. J. Bot. 5: 273. 1918.
Type information:
Holotype [B]. J. M. Lydgate s.n.. Hawai`i.

Note: Holotype presumably destroyed; fragment BISH-486334! This variety was based on the not validly published ß var. of Hillebrand (Fl. Hawaiian Isl. 329. 1888).

=Cyrtandra platyphylla
Note: Holotype presumably destroyed; fragment BISH-486334! This variety was based on the not validly published ß var. of Hillebrand (Fl. Hawaiian Isl. 329. 1888).

*Verification: None.

Cyrtandra platyphylla A. Gray var. membranacea Rock, Amer. J. Bot. 5: 273. 1918.
Type information:
Holotype [BISH]. J. F. Rock 4078. 6-10 July 1909. Hawai`i: Waimea, Holokai`ea Gulch.
=hybrid of Cyrtandra paludosa var. paludosa x C. platyphylla

*Verification: W.L. Wagner.

Cyrtandra platyphylla A. Gray var. parviflora Rock, Amer. J. Bot. 5: 272. 1918.
Type information:
Holotype [BISH]. J. F. Rock 10339. July 1910. Hawai`i: Kohala Mountains, Kohala forests. Isotype(s) [BISH! [2]].
=hybrid of Cyrtandra kohalae x C. platyphylla

*Verification: None.

Cyrtandra platyphylla A. Gray var. robusta Rock, Amer. J. Bot. 5: 274. 1918.
Type information:
Holotype [BISH]. J. F. Rock 8317. June 1910. Hawai`i: Kohala, Kawainui ditch trail, dense rain forest.1065m. Isotype(s) [BISH!].
=Cyrtandra platyphylla

*Verification: None.

Cyrtandra platyphylla A. Gray var. stylopubens Rock, Amer. J. Bot. 5: 271. 1918.
Type information:
Holotype [BISH]. J. F. Rock 4493. 6 July 1909. Hawai`i: Mauna Kea, Pa`auhau Forest No. 3.1220m.
=hybrid of Cyrtandra paludosa var. paludosa x C. platyphylla

*Verification: None.