Campanulaceae. 
The genus Cyanea is endemic in the Hawaiian Islands and possesses more 
species than either Clermontia or Delissea. All the species are shrubby, with 
three exceptions. One species, C. leptostegia, reaches 40 feet in height, and is 
the tallest of any of our Lobelioideae. The genus consists of many species, 31 
having been so far described, while many more have been discovered by the 
writer which will be published in a monograph on this tribe, bringing the 
nuinber of species of Cyanea probably up to 45, or even more. 
The genus Cyanea consists of milky shrubs or trees with a single erect or 
branching stem, which includes a medullary cavity. Flowers are arranged in 
racemes. 
KEY TO THE SPECIES. 
Calycine pasate shorter a the tube. 
Flow abe sh w or cream colored ee Pla nee eee Arar een pene ae C. arborea 
ae et onger i the tube. 
lowers -Gark purple. cca cies snes cow ieiele ambien yee eee nee C, leptostegia 
Cyanea arborea (Gray) Hbd. 
(Plates 206, 207, 208.) 
CYANEA ARBOREA (Gray) Hbd. Fl. Haw Isl. son re ei oe Hi. eines Ins. Mar. 
Gra 
Pacif. VII (1892) 219.—Delissea coriacea var. H. Mann 
l. ec. p. 178.—Delissea arborea H. Mann l. ¢., . ar gee soca Heller 
1.-¢; -p.- 909. 
Leaves sessile ich 40-65 em x 7-12.5 em, shortly acuminate or rounded and 
upiculate, gradually narrowing toward the es faintly. ‘dentate, but almost entire and 
Me towards the bas goes or pubescent along the , glossy, saps to coriace- 
ous; pedunele slender but stiff 15-30 em long, almost ike above, closely many flowered 
in “the last fourth, pedicels ae 3.8 mm; bracts 2-4 mm; bractlets 1 mm; aces Zt cea 
na lan agchicg toothed, the tube mm; corolla slen der moderately eurved, subere 
ng, m wide, gla rous grayish white, rather thin, with a deep dorsal slit pie 
ene n “nies: staminal column glabrous; berry globose, faintly ribbed, 10-12 mm in 
diameter, 
A tree 12 to 24 feet tall of palm-like habit with a crown of leaves at the apex 
ot the stem, the latter measuring about 4 inches in diameter or more. 
This is one of the most handsome Lobelias which the islands possess. Unfor- 
tunately it is exceedingly scarce, and the writer fears that it has become extinct. 
Where there was once a forest at Ulupalakula there is now only grassland 
with planted Eucalypti. The writer met with only one single plant in a small 
gulch which was inaccessible to cattle. For three days the writer searched for 
this beautiful Lobelia, and he had nearly abandoned all hope when he saw this 
handsome plant hidden in a small and very narrow gulch. It evidently is the 
last of its race. In the whole district of Ulupalakua there is now no forest at 
all, only here and there stands a tree of the araliaceous species Pterotropia 
dipyrena. 
Cyanea comata, another beautiful lobeliaceous plant once common in this 
district, has vanished forever. 
The plant is peculiar to Haleakala, Ulupalakua, Maui, and was once plentiful 
at an elevation of 4000 to 5000 feet. It flowers in the early spring. = 
493 
