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JOSEPH F. ROCK 
D. Leaves petiolate. 
E. Leaves glabrous, loosely arranged. var. laxifoUa. 
E'. Leaves hirtellous or hispid on both surfaces, 
F. Petioles slender, distinct. var. hirtella. 
F'. Petioles broadly winged, indistinct and broadly 
dilating at the base. var. denticulata. 
D'. Leaves broadly sessile, linear-lanceolate, 30 cm. long 
by 4 cm. broad, veins parallel; pyxidium dehiscing 
at the middle. var. anomala. 
B'. Plants stemless or very short-stemmed, herbaceous and 
drooping. 
C. Leaves pubescent above with scattered hairs; floral 
bracts long, acuminate. var. longihracteata. 
C . Leaves glabrous and darker above, pale beneath, with 
dark-brown pubescence on the prominent nerves below, var. acaulis. 
. Veins free, parallel or arcuate, not converging; caudex simple, 
never branching; pyxidium circumscissile at the middle. Plantago pachyphylla 
B. Leaves glabrous on both surfaces or slightly pubescent be- 
neath. 
C. Rosettes large; leaves large, 15 to 18 cm. long by 5.5 to 
10 cm. broad, glabrous on both sides, 9- to ii-nerved. var, glahrifolia. 
C. Rosettes small; leaves 5 to 6 cm. long, 3- to 5-nerved, 
often slightly pubescent beneath. var. kauaiensis. 
B'. Leaves pubescent, puberulous, or woolly on one or both 
surfaces. 
C. Pubescence or wooUiness fawn-colored, 
D. Leaves pubescent or woolly beneath. 
E. Leaves pubescent beneath, sessile; spike woolly 
and stout. var. mauiensis. 
E'. Leaves orbicular in outline, densely matted below 
with fawn-colored wool. var. rotundifolia. 
D'. Leaves glabrous beneath, strigosely hispid above; 
plants small, rosette-like; spike few- flowered. var. pusilla. 
C . Pubescence gray. 
D. Leaves puberulous, linear-lanceolate; spikes glabrous, 
slender. var. hawaiiensis. 
D'. Leaves thick, brittle, broadly ovate, densely hirsute 
with gray hairs on both sides; spike hirsute. var, muscicola. 
Plantago princeps Cham. Schlecht. Linnaea i: 167. 1826. 
A shrub 1.3 m. high, branching; branches flexible, terete, naked; 
leaves deciduous, leaving scars, dilating at the base, semi-amplexicaul, very 
glabrous, uslially 15 cm. long, 2.5 cm. broad, Hnear-lanceolate, acuminate, 
narrowed before dilating at the base, 7- to 9-nerved, sometimes oval- 
lanceolate, shorter, 5 to 7.5 cm. long, 16 to 20 mm. broad, less acute at the 
apex; margin either entire or denticulate with few minute teeth especially 
in the upper half; axils woolly, the wool ferrugineous ; spike pedunculate, 
exceeding the leaves, elongate, lax, sparsely flowered, attenuate at the apex; 
peduncles shorter than the leaves, axillary, compressed, glabrous or with 
few hairs; flowers lax; bracts glabrous, sometimes cilia te, shorter than the 
calyx, resembling the sepals but narrower, woolly at the base; calyx 4- 
sepalous; sepals ovate-acute, the back brown, the margins whitish, mem- 
