Subgenera of Duhautia — ST. JOHN 
343 
Bot. 20: 618, 1933; later as Railliardia 
thyrsiflora Sherff, Bernice P. Bishop Mus., 
Bui. 135: 121-122, 1935. 
Omitted from this enumeration of species 
are numerous described varieties and forms. 
Also omitted are the several interspecific hy- 
brids and intergeneric hybrids described by 
Sherff or by Degener and Sherff. These puta- 
tive hybrids have not been evaluated and 
allocated by the writer. 
Subgenus Mixta subgen. nov. 
Type species: Duhautia railliardioides 
Hbd.; the reference follows. 
Bracteae involucri plusminusve cohaeren- 
tae, involucrum campanulatum est. Aristae 
pappi brevi ciliati. 
Bracts of the involucre more or less united; 
involucre campanulate; pappus bristles short 
ciliate. 
Enumeration of Species 
Duhautia paleata Gray, Amer. Acad. Arts 
and Sci., Proc. 5: 135, 1861. 
D. railliardioides Hbd. (as D. raillardioides), 
FI. Haw. Is. 224, 1888, emend. Sherff, 
Bernice P. Bishop Mus., Bui. 135: 107, 
1935. Hillebrand published his new spe- 
cies as D. raillardioides and discussed its 
similarity to the next genus, Raillardia of 
Gaudichaud. We must accept this generic 
name as Railliardia, which was the orig- 
inal, well-formed, and valid name. Hence, 
though there is no covering rule, Sherff 
took the logical, and, we believe, correct 
course in changing the specific name to be 
in harmony with the correct spelling of the 
generic name. He was not justified in cap- 
italizing the specific name D. railliardioides 
under the 1935 International Rules of Bo- 
tany, Rec. XLIV, examples, and Art. 3. 
D. waialeale Rock, Torrey Bot. Club, Bui. 
37: 303-304, f. 5, 1910. 
notes ON Duhautia Sherffiana 
The type collection of Duhautia Sherffiana 
Fosb. is H. St. John & F. R. Fosherg 12,161, 
from Oahu, Waianae Mts., brushy ridge, east 
of 2nd gulch east of Kaupakuhale, Mokuleia, 
2,500 ft. alt., Oct. 23, 1932. At the same 
time and locality, only 200 feet higher up 
the same ridge, another collection of this nov- 
elty was made (St. John & Fosherg 12,162); 
but this was not listed in Fosberg’s paper. 
The species of the subgenus Rail liar diaster 
are not common on Oahu, and not until 
September 18, 1949, did the writer find an- 
other colony. When climbing one of the nar- 
row rocky ridges leading to Puu Kanehoa in 
the Waianae Mountains, he saw below him 
a patch of unfamiliar yellow flowers. By 
grasping hands with a student he was lowered 
over the brink and he grabbed a few sprigs 
of what appeared to be Rail liar diaster. Re- 
turning the next week, he was roped by his 
companions, M. Canoso and C. E. St. John, 
and lowered 20 feet down the vertical basalt 
cliff. There, on a dirt covered ledge so narrow 
as to deny a foothold to man, were three 
vigorous bushes 1-1.5 meters tall, many- 
branched, with the numerous cymes in full 
golden flower. After taking photographs and 
gathering full specimens, the collector was 
hauled again to a foothold on the knife-edged 
ridge. The data for these specimens are: Oahu, 
Waianae Mts., southeast ridge of South Peak 
of Puu Kanehoa, on face of basalt cliff, 20 
ft. below crest of sharp ridge, 2,600 ft. alt., 
in open sunny spot, at top of thicket of Metro - 
sideros and Euphorbia, Sept. 25, 1949, H. St. 
John 23,924; and also, 23,922 and 23,923. 
Though collected in the southern part of the 
Waianae Mountains, these specimens proved 
to be of the same species, Dtthautia Sherffiana 
Fosberg, earlier described from the northern 
part of the range. After studying all of the 
specimens, including an isotype, the following 
changes in description are proposed: blades 
