THE GENUS PLANTAGO IN HAWAII 
207 
889 1 & from the same locality differs from 8891 mainly in the hirsute spike.) 
Oahu: Konahuanui, Feb. 22, 1914, O. H. Swezey, no. 12771 College of 
Hawaii Herb. (Nerves on under side of leaves slightly hairy.) 
Plantago pachyphylla var. kauaiensis forma robusta Rock forma 
nova. 
Caudex thick, long, creeping; leaves thick, coriaceous, linear-lanceolate, 
of nearly even width, broadly sessile at the base, 5 to 17 cm. long, up to 3 cm. 
broad, 7- to 9-nerved, glabrous on both sides, acute at the apex; spike 22 
to 58 cm. long, stout, terete, glabrous or puberulous; bracts and sepals 
acute, glabrous or puberulous, especially on the median nerve; capsule 
obtuse, as long as the calyx, 2-seeded. 
West Maui: Summit of Mt. Eeke, Hillebrand in Gray Herb, and in 
College of Hawaii Herb, ex Herb. Berlin; summit of Mt. Eeke, August, 
1918, Rock, no. 16006 in College of Hawaii Herb. 
(The W. Maui plants referred by Hillebrand to hawaiiensis cannot be 
separated from var. kauaiensis, but differ in the much stouter, terete spikes. 
The writer's specimens from Mt. Eeke have slender spikes as in the typical 
kauaiensis, but are pubescent and glabrous afterwards and, in some in- 
stances, floriferous almost to the base.) 
MoLOKAi: Kawela Swamp below Pelekunu, growing with Oreubulus 
and Panicum, March 17, 1910, Rock, no. 6098 in College of Hawaii Herb. 
(Although the Molokai plant is less robust than the Maui form it cannot 
well be separated from it. The leaves are slightly pubescent on both 
surfaces and more flaccid. The leaves are glandular-denticulate and 
somewhat pubescent, especially on the nerves.) 
The hairiness of the spike is evidently an unreliable character, as hairy 
and glabrous spikes occur on identical plants. 
The writer's specimen (no. 8214) from Puu Kukui, West Maui, are 
identical with those of Hillebrand from Eeke. It is exceedingly doubtful 
if Hillebrand had ever visited Mt. Eeke, which doubt seems to be con- 
firmed by the fact that he makes no mention of the thousands of silverswords 
occurring there and which are practically absent from Puu Kukui. 
Plantago pachyphylla var. kauaiensis forma intermedia Rock forma 
nova. 
A specimen collected on Waialeale, Kauai, no. 8891a, with hirsute spikes 
and leaves hirsute on the upper surface, is intermediate between kauaiensis 
and Wawra's variety pusilla. 
Plant larger, leaves linear-oblong, glabrous and prominently nerved 
below, strigosely hispid above, but finally deciduous with the exception 
of the apices of the leaves; spikes shorter, covered with deciduous hairs, 
rachis longer, angular; calyx segments acute, otherwise as in var. pusilla. 
Kauai: Waialeale, Oct. 20, i9ii,Rock, no. 8891a in College of Hawaii 
Herb. 
