HIERACIUJI OGWENI, SP. NOV. 407 



In group B 34 per cent, of the sepals fringed gave only 66 per 

 cent, of petals aborted. 



Would not these facts additionally conduce to prove that in 

 plants where the petals have aborted the sepals begin to adopt 

 their functions ? Are we not also furnished in this instance with 

 a further link between Helleborus with its sepals and tubular 

 nectaries and Anemone with its petaloid sepals and absence even of 

 petal-replacing nectaries. 



I may add that the specimens were carefully gathered in- 

 discriminately, so that they furnish a fair average. The fringes 

 were quite distinct, and great care was taken to avoid mistaking 

 modified stamens for modified petals, although the former also 

 occurred. 



HIEKACIUM OGWENI, sp. nov. 

 By E. F. Linton, M.A. 



In 1890 occurred by the side of the R. Ogweu, near Tregarth, 

 Carnarvonshire, a hawkweed which I took at first for a form of 

 Hieracium (jothicwii. Fr. or H. sparsifoUmn Lindeb., but which proved 

 on cultivation to have as great or greater afiinity with H. uiubellatum 

 Linn. Judging from a specimen of the same plant gathered at 

 Bethesda, higher up the same valley, by the Rev. A. Ley, Dr. Elf- 

 strand and Mr. F. J. Haubury were disposed to place it as a variety 

 under this species. The new form has no doubt a tendency to 

 fasciculation in the upper branches, approaching H. umhellatum in 

 this respect ; but it differs so markedly in some other points, that 

 I cannot place it on the same level with other H. umhellatum 

 varieties ; though it may perhaps rank as a subspecies. Mr. 

 Dahlstedt, to whom I sent specimens labelled " H. nmbellatum 

 var.," observed that it reminded him very strongly of H. reticu- 

 latum Lindeb., adding that it might perhaps be considered as a 

 connecting form between these two species. The following is the 

 description, the name being taken from the river of the valley 

 where it has been detected : — 



H. Ogweni, n. sp. Stem 2-3 ft., erect, somewhat hairy 

 below, glabrous above, leafy. Leaves lanceolate, spreading, dis- 

 tantly toothed, rather scattered, light green, thinly hairy below, 

 gradually narrowed to the base or in the lower leaves to the 

 petiole, upper leaves rounded but narrow. Heads rather small, 

 many in a corymbose panicle, often subumbellate ; pedundes 

 shortly pubescent and fioccose ; involucre light green, not black- 

 ening (scarcely darkening at all when carefully dried), nearly 

 glabrous, sprinkled with few small glands ; bracts straight, ap- 

 pressed, obtuse, a few of the outermost a little lax, tips straight. 

 Styles yellow. Pappus pale brownish, 



II. umbellatuin L., variable as the species is, differs from 

 H. (J(jweni in having the lower leaves sessile or scarcely pctioled 

 and all the leaves of a dark green and more numerous and 



