Lobelia L.

The Hawaiian Lobelia fall into two quite separate sections: Galeatella - the large yellow/red flowered clade with spreading lobes and Revolutella - the small blue/magenta flowered clade with revolute lobes. Galeatella is proposed to be sister to Trematolobelia. Note that the seeds of Galeatella are minutely winged as are those of Trematolobelia. Revolutella is proposed to be sister to all other Hawaiian Lobeliads. Below are a suite of characters that can be used to differentiate the species.

Revolutella: small, blue or magenta flowers with revolute lobes.

	Islands	Elevation	Corolla color	Leaf underside indumentum	Leaf arrangement	Erect/ Prostrate	Avg Height
L. hypoleuca	All	Mid, High	Blue	Tomentose	Upper 1/2	Erect	2.0 m
L. yuccoides	Kohala, Wai'anae	High	Blue, Lilac	Tomentose	Apical rosette	Erect	1.7m
L. oahuensis	Ko'olau	High	Pale blue	Hirsute	Apical rosette	Erect	2.0 m
L. remyi	O	?	?Blue	Tomentose	?	?Prostrate	?0.5 m
L. dunbariae	Mo	Mid	Blue	Glabrous	Upper 1/2	Prostrate	0.5 m
L. grayana	Haleakalā	Mid	Blue	Tomentose	Apical rosette	Erect	1.5 m
L. hillebrandii	Maui, E&W	Mid	Blue, Lilac	Tomentose	Upper 1/2	Prostrate	0.5 m
L. niihauensis	Ni'ihau, Kaua'i, Wai'anae	Low	Magenta	Glab./pub.	Apical rosette	Prostrate	0.3 m
L. monostachya	Ko'olau	Mid	Magenta	Glabrous	Upper 1/2	Prostrate	0.2 m

Galeatella: large, yellow/red flowers. All of the species are bog specialists except L. gaudichaudii.

	Islands	Elevation	Corolla color	Leaf underside indumentum	Leaf arrangement	Erect/ Prostrate	Avg Height
L. x kauaiensis	Kaua'i	High	Y, G, W	Glabrous	Apical rosette	Erect	1.5 m
L. villosa	Kaua'i	High	Y, G, W	Glabrous	Apical rosette	Erect	0.8 m
L. wahiawa	Kaua'i	Mid, High	Pale purple	Glabrous	Apical rosette	Erect	3.0 m
L. gaudichaudii	Ko'olau	High	Crimson	Glabrous	Apical rosette	Erect	0.7 m
L. koolauensis	Ko'olau	High	W	Glabrous	Apical rosette	Erect	1.8 m
L. gloria-montis	Maui, E&W	Mid	Y, G, W	Glabrous	Apical rosette	Erect	3.0 m

Sources:

• Linnaeus, 1753;
• Chamisso, 1833;
• G. Don, 1834;
• Meyen, 1835;
• De Candolle, 1838;
• Hooker & Arnott, 1841;
• Gray, 1861;
• Mann, 1868;
• Hillebrand, 1888;
• Heller, 1897;
• Rock, 1919;
• Degener, 1960 (as Galeatella);