Dubautia.} COMPOSITAE. 221 
W. Maui! on the southern slope of Eeka at a height of 5000 to 6000 ft. — Dedicated 
. y 
to f. ray, the founder of the genus, to who Ors r u debted 
for a proper knowle the Hawaiian flora and in especial of this interesting gro up 
of Compositae. — The leaves, free to the base, are so closely set that naps verticillate 
position can only , ined in young plants. There are from 5 to 8 in a whorl, 
but at the transition into the flowering raceme the whorls are obtauely drawn out an 
aaa —e connected, to pass finally ‘ito the irregular alternate arrangement of 
the 
Trine VI. SENECIONIDEAE. 
Heads heterogamous and radiate or discoid, or by defect of the ray 
discoid and homogamous. Involucre of one or two series of equal herba- 
or with a few smaller outer ones. Receptacle naked o 
with few paleas to the outer florets. Anthers obtuse or scarcely biied 
or 
bristles. Leaves mostly alternate, rarely opposite. Flowers usually yellow. 
22. DUBAUTIA, Gaud. 
Flower-heads homogamous, discoid, all florets hermaphrodite and fertile. 
Invol. turbinate, with 5—10 equal bracts in one row, free (except in 
one species), narro aceous, curving round the outermost achenes, 
Receptacle naked or —— the paleae similar vol. bracts, 
d corresponding in number to the inner florets, none onal the 
a 
number of florets does not exceed that of the bracts. Corollae tubular, 
with a campanulate 5-fid limb, the lobes reflexed. Anthers purple, 
dentate at the base, shortly axputiiiculate: le- branches revolute, sub- 
truncate, or with short conical appendages. Achenes hispid, black, wedge- 
shaped, 4—5-ribbed, the faces often again prominently costulate. Pappus 
dirty brown, not longer than the achenes, consisting of about 20 flat 
subulate or lanceolate ciliate rays in a single row. — Shrubs or small 
trees, resinous, with opposite or . lanceolate, sessile or subsessile, 
clasping, parallel-neryed leaves. Inflor. terminal, paniculate or corymbose. 
Corollae deep orange or purple. 
A Hawaiian genus, closely allied yd the following one. Its distinguishing charac 
Consist in the free involucral bracts, the paleate Cao and the broader rays of the 
Pappus, which are only shortly ciliate, gue lumose. Dubautia raillardioides has enter 
mnate invol., while in Raillardia Menziesii m of the bracts is 
yey ; in the few-flowered D. plantaginea and raillardioides the receptacle Pog mostly 
, e€ the large hea R iesii several paleae ways found to be 
Naked, w in are al 
Present; and oe the long-ciliate rays of the pappus in D. plantaginea approach 
1y of a Raillardia. 
panicle: : 
Leaves meoney 3 aie pot heads with 7—8 flore ._ 1. D. plantaginea. 
Leaves faintly neryed and areolate, ae go . with ‘ 
15 florets . 2. D. laevigata. 
