1909. No. 8. VASCULAR PLANTS COLLECTED IN ARCTIC NORTH AMERICA. 27 
Folia tenuia glabra, lete viridia nervo mediano petiolisque + alatis 
pallidis, lingulata — linearia v. anguste lineari-lanceolata lobulis brevibus — 
mediocribus acutis sat remotis triangularibus marginibus concavis v. deltoideis 
margine superiore integris v. dente uno alterove instructis apicibus paten- 
tibus v. ungulatim curvatis, interlobiis + latis margine concavo vulgo 
integro, lobo terminali hastato brevi — mediocri acuto. 
Pedunculi folia æquantes vel iis paullo longiores præsertim apicem 
versus + araneosi. 
Calathium sat planum valde radians 45—50 mm. latum. 
Ligulæ amoene luteæ, interiores obscuriores, marginales late planæ 
extus concolores v. stria inferne latiuscula superne vulgo ad nervos solum 
limitata olivacea notatæ. 
Anthere sat obscure lutez polline carentes. 
Stylus luteus, stigmatibus longis obscuris. 
Involucrum humile, sat crassum, atroviride, squamis exterioribus 
latiusculis v. sat latis ovato-lanceolatis sub apice mediocriter — longiuscule 
cornutis atroviridibus sæpe paullulum purpurascentibus + conspicue albo- 
marginatis erectis subadpressis paullum supra medium interiarum adtingen- 
tibus, intimis sub apice cornu minore instructis. 
Achenium haud visum. 
In full flower about the beginning of August (July 31st 1904; Aug. 
3rd—5th 1905). 
The well-known authority in Hieractum and Taraxacum, Dr. H. DaxL- 
STEDT of Stockholm has been kind enough to examine the Taraxaca 
brought home by the Gjöa Expedition and has sent me the above 
description of this new species and further the description of another new 
species from King Point (compare later). As to 7. hyperboreum DAHLST. 
he adds the following notes: it resembles small specimens of 7. groenlan- 
dicum Dauıst. (Arkiv f. botanik, Stockholm, Bd. 5, no. 9, 1906, p. 23), 
but is distinguished from them by the thin leaves with distant, acute and 
often claw-like lobes, by the darker and shorter involucres, by the broader 
and more appressed outer involucral scales, the appendages of which are 
shorter, by the even more radiating flowers, and by the absence of pollen. 
It has also some resemblance to 7. arctogenum Dautsv. (ibid., p. 26) from 
which it is easily known by the shape of the leaves and the absence 
of pollen. 
