40 On an wndescribed Senecio. 
the base ; neither nerves nor veins prominent. Involucre 3-4” 
long. Ray-flowers about 7. Disk-flowers about 20, hardly 
above 2” long, a little exceeding the copious and very tender 
bristles of the white pappus. Ripe fruit not seen on this 
occasion. 
S. Paucifolius, to which Mr. MacOwan justly compares 
his plant, though somewhat resembling it in habit, assumes 
by its sessile leaves of mostly ovate shape a very different 
appearance ; the nerves, moreover, are not radiate. The 
flowerheads of both bear a great resemblance, as a comparison 
of S. Paucifolius in the Melbourne Phytological Museum 
at once rendered manifest. The affinity of S. Tropeoli- 
folius is indeed nearer to S. Oxyrifolius ; the differences of 
the latter consist in a pleiocephalous inflorescence, in a 
lesser number of scales constituting the involucre, in the 
abscence of ligular flowers and in hispidulous achens. On 
this, as an apt occasion, the writer would still remark, that 
in the extensive series of South African species of Senecio, 
diagnostically defined by Professor Harvey, one does occur 
among those formerly undescribed, as S. Leucoglossus, so 
named by Dr. Sonder, The specific name is, however, pre- 
occupied by a West Australian plant, described in the 
second Vol. of the “Fragm. Phytogr. Austr.,” p. 15. The 
name of the homonymous South African plant might thus _ 
be altered into S. Actinoleucus. 
The writer connot conclude this brief notice of a South 
African plant without a tribute of homage to the two ilus- 
trious phytographers, Drs. Harvey and Sonder (of whose 
lengthened friendship he may well be proud), who, in con- 
structing their noble work on the vegetation of extratropical 
Africa, have so far and so rapidly advanced to bring to- 
gether their discoveries and those of their predecessors in a 
form clear erudite and accessible ; though alas! the hand of 
death has withdrawn one of these discoverers of the Cape 
flora from amidst his glorious exertions, from exertions with 
dignity sustained to diffuse combined knowledge and de- 
light, and certain to stamp his name on that part of the 
globe for all time. But it will not be there alone where the 
children of Flora will speak with every returning spring of 
both Harvey and Sonder. It is also on the oceanic shores 
of the Australian continent, where we ever will be reminded 
of the genius of these great men, when we contemplate the 
wonderfully rich, varied, and beautiful marine vegetation of 
our own extensive coasts. 
