PuiatE 102.—RAOULIA MONROI anp RAOULIA 
SUBSERICEA. 
Famity COMPOSITZ..] [Genus RAOULIA, Hook. r. 
Raoulia Monroi, Hook. f. Handb. N.Z. Fl. 148; Cheesem. Man. N.Z. Fl. 330. 
Raoulia subsericea, Hook. /. Fl. Nov. Zel. i, 136; Cheesem. Man. N.Z. Fl. 331. 
The genus Raouwlia, as defined in the “Genera Plantarum,” can be easily 
divided into two sections by the remarkable differences in the pappus-hairs. 
In the first section, which must be considered as the type of the genus, and to 
which the name of Leptopappus has been given, the pappus-hairs are soft and 
very copious, extremely slender, and are arranged in many series. In the 
second division, which. bears the name of Imbricaria, the pappus-hairs are few, 
rigid and thickened above, and are arranged in one series. The generic 
distinctness of this group has always been suspected ; and, through the researches 
of M. Beauverd, of the Boissier Herbarium, may now be considered as. satis- 
factorily established. Further particulars on this point will be given under the 
following plate. 
In the Manual I have divided the section Leptopappus into two subdivisions, 
in the first of which the inner involucral bracts are without white radiating tips, and 
in the second possess them. Raoulia Monroi, which belongs to the first sub- 
division, was originally discovered by Sir David Monro in the valley of the 
Waihopai, the chief tributary of the Wairau; but shortly afterwards was 
observed by Mr. W. T. L. Travers on the Canterbury Plains. It is now known 
from many localities on the eastern side of the South Island, from Nelson to 
Foveaux Strait; but I have no knowledge of any station on the western side 
of the Island. In Otago and some portions of Canterbury it frequently occurs 
at sea-level; and it and RF. australis are the only species of the genus, so far 
as I am aware, that are found on sand-dunes. Inland it generally occurs in 
dry gravelly places, and is often seen creeping amongst grass and other vegetation, 
in this respect differing from the other species of the genus, most of which form 
homogeneous patches unmixed with other vegetation. I have observed it at an 
altitude of 3,500 ft. in the Clarence Valley, but as a rule it is rarely seen above 
2,000 ft. It is probably nearer to A. tenuicaulis than any other species, but 
the uniform greyish-white colour, linear obtuse leaves, and obtuse involucral 
scales distinguish it at a glance. 
R. subsericea belongs to the second subdivision of Leptopappus, in which 
the inner involucral scales are furnished with white radiating tips. In species 
with the habit of A. subsericea, which forms flat matted patches of prostrate 
interlaced branches, over which the flower-heads are profusely scattered, these 
radiating involucral scales give the heads a very conspicuous and attractive 
appearance. According to Sir J. D. Hooker, R. subsericea was first gathered by 
Lyall at “ Port Cooper,” now better known as Lyttelton Harbour; but more 
probably he obtained it from the shingle-beds of one of the large rivers crossing 
the Canterbury Plains. Since then it has been collected in many localities on 
the eastern side of the South Island, from Cook Strait to the south of Otago. 
Its altitudinal range is from 1,000 ft. (or probably less) to over 4,000ft. As 
a species it is nearest to AR. glabra, but has a stouter habit, shorter and more 
erect branchlets, longer and more silky leaves, and rather larger heads, with 
more conspicuous white tips to the inner involucral scales. 
Puate 1024. Raoulia subsericea, drawn from specimens collected in the Wairau Valley, Nelson, 
at an altitude of 2,000 ft. Fig. 1, summit of branch, showing leaves and a flower-head (x 4); 2, one 
of the outer involucral bracts (x 12); 3, an inner involucral bract (x 12); 4, inner or hermaphrodite 
disc-floret (x 8); 5, pappus (x 15); 6, anther (x 15); 7, style-branches (x 15); 8, outer or female 
floret (x 8). 
ae 1028. Raoulia Monroi, drawn from specimens collected in the Awatere Valley, Marl- 
borough, by Mr. J. H. Macmahon. Fig. 9, summit of branch, showing leaves and a flower-head (x 4) ; 
10, involucral bract (x 12); 11, inner or hermaphrodite disc-floret (x 12); 12, pappus-hair from 
same (x 15); 13, anthers (x 15); 14, style-branches (x 15); 15 and 16, outer or female florets (x 12). 
