not densely covered with stellate hairs; it gives rise to many 
and long epiterrean stolons. It is allied to H. magyaricum N. & 
P., and under this name I have used the species for castration 
experiments in 1903 (Ser. Is), without knowing that castration was 
not at all necessary, only isolation. The Plate gives a picture of 
an old corymb and of a young one (Figs. 1 & 2). 
I could not find the species-name excellens in any botanical 
work, but the register of the Botanical Garden gave the evidence, 
that seeds with this name were received from the Botanical Garden 
of Lemberg in Galizia in 1889, and that since then the plant 
has grown in our garden. I then wrote to the Garden of Lem- 
berg, but did not get any answer. Later Professor Blocki of 
Lemberg has written to me, that the species was named by him 
without description, and as I asked him to give a description and 
sent him a dried specimen of my plant, he has been so kind to 
work out the following description for which I beg him to receive 
my best thanks. He points out that the cultivated specimens agree 
fully with his original ones: 
“Das mir zugesandte Hieracium ist in der That durchaus conform 
mit meinem Hier. excellens, dessen Diagnose ich Ihnen hiermit zu- 
kommen lasse: 
Hieracium excellens Blocki, n. sp. 
Sectio Praealtina Nag. et Pet. Rhizoma breve crassiusculum, 
semper stoloniferum ; stolones valde elongati, tenues, non adscendentes, 
interdum florentes, foliis lanceolatis numerosis instructi; caulis ad 
80 cm. altus, minute striatus, haud fragilis, 3—4-phyllus, laxe 
paniculato-corymbosus, polycephalus, dense stellato-floccosus et prae- 
terea in inferiore parte pilis setulosis, in superiore elandulosis (1mm. 
longis) parcissime vestitus; pedunculi inflorescentiae inferiores 
remoti, superiores approximati, omnes densissime canofloccosi et 
parce glandulosi pilis longioribus basi nigricantibus intermixtis; 
folia haud denticulata, rosularia sat numerosa, exteriora sub anthesin 
sicca, reliqua persistentia, + /anceolata, acuta, ad basin sensim 
attenuata, ad 20 cm longa, 1:5—2-'5 lata, folia caulina sensim decres- 
centia, inferiore caulis parte inserta, omnia glaucescentia, pilis setu- 
losis 1mm longis supra spectantibus ciliata, supra praeter setulas 
1mm longas rarissimas nuda, subtus + dense canofloccosa nervoque 
medio setulis ciliata; folia virginea in utraque pagina dense stellato- 
floccosa; capitula parva (5mm longa), dense stellato-floccosa et 
