Taraxacum sect. Borealia

Primary tabs

Taraxacum sect. Borealia

no image available

Common names

Chinese (China): 北方蒲公英组 bei fang pu gong ying zuA; French (France): Pissenlit à callositésB,1; French (Switzerland): Pissenlit à callositésC,1; German (Switzerland): Gehörntes PfaffenröhrleinD,1; Italian (Switzerland): Tarassaco con involucro callosoE,1
1. recommended

Systematics

Taraxacum sect. Borealia includes well over 100 species predominantly distributed in the Arctic region, from Alaska and Greenland through the Arctic islands (e.g. Svalbard, Novaya Zemlya) and through northern Siberia to the Far East, including Kamchatka, with numerous representatives also occurring in the mountainous regions of northern temperate zone (Kirschner & al. 2014). A preliminary checklist was provided by Kirschner & al. (2014). Agamospermy is absolutely prevailing in this section and the only sexuals so far known occur in North America, referred to by the broadly understood name T. ceratophorum and the endemic T. californicum, further sexuals may most likely be expected northern Japan and the adjacent Kuril Islands (Kirschner & al. 2014).F

Image sources

Handel-Mazzetti 1907: t. 2 (details)G

Description

"Plants medium-sized, rarely robust. Leaves usually mid-green, not thickened, sparsely arachnoid to subglabrous; petiole broadly winged to narrowly winged; leaf blade shallowly to deeply pinnatilobed to pinnatisect; lobes most often patent. Scapes usually growing laterally from leaf rosette, not from center. Outer phyllaries green to blackish green, ± not imbricate, lanceolate to ovate, loosely appressed, erect or erect-patent, usually with a paler broad to narrow border, margin glabrous to sparsely ciliate, apex with a conspicuous horn or sometimes only so in later capitula. Ligules yellow or whitish. Achene grayish straw-colored brown, rarely brown or reddish, usually 4–5 × 0.9–1.1 mm; body shortly spinulose above, usually subabruptly narrowing into a conic to subcylindric 0.5–1.4 mm cone; beak usually 6–11 mm, thin. Pappus white or yellowish white." H,I

Distribution

Asia-Temperate: Afghanistan native; Altay native; Amur native; Iran native; Iraq native; Japan (Hokkaido native, Honshu native); Kamchatka nativenative; Kazakhstan native; Khabarovsk nativenative; Kirgizistan native; Kuril Is. nativenative; Magadan nativenative; Mongolia nativenativenativeJ; Primorye native; Sakhalin nativenative; West Siberia native; Xinjiang native Asia-Tropical: Nepal native; Pakistan nativenative; West Himalaya (Himachal Pradesh nativenativeK, Jammu-Kashmir nativenativeL) Europe: Austria nativenativeM (Austria native); East European Russia native; Finland nativenativeM; France (France nativenativeM,N,O,P); Iceland nativeM; Italy nativenativeQ; North European Russia nativenativeR,S; Norway nativenativeM; Svalbard nativenativeM; Sweden nativenativeM; Switzerland nativenativeM,T,U Northern America: Alaska native; Alberta native; Aleutian Is. nativenative; British Columbia native; Colorado native; Greenland native; Labrador native; Manitoba native; Newfoundland (Newfoundland native); Northwest Territories native; Nunavut native; Ontario native; Québec native; Saskatchewan native; Wyoming native; Yukon native

Credits

Kalheber H. 2010: Image sources (1 added).

Bibliography

A. Wu & al., Flora of China 20-21. 2011
B. Tela Botanica, Le réseau de la botanique francophone. 2006 (as Taraxacum ceratophorum2)
C. Aeschimann, D. & Heitz, C., Index synonymique de la flore de Suisse et territoires limitrophes (ISFS). 1996 (as Taraxacum ceratophorum aggr.)
D. Synonymie-Index der Schweizer Flora und der angenzenden Gebiete. 1996 (as Taraxacum ceratophorum aggr.)
E. Indice sinonimico della Flora della Svizzera e territori limitrofi. 1996 (as Taraxacum ceratophorum aggr.)
F. Kirschner J., Štěpánek J. & Dickoré W. B., A revision of Taraxacum sect. Borealia Hand.-Mazz. in Middle Asia and the Himalayas with a preliminary world checklist of the section in Folia Geobot. 49: 579–602. 2014
G. Handel-Mazzetti, H. von, Monographie der Gattung Taraxacum. 1907 (as Taraxacum ceratophorum2)
H. Ge X. J., Kirschner J. & Štěpánek J. - Taraxacum in Wu & al., Flora of China 20-21. 2011.
I. Kirschner J. & al. in Folia Geobot. 49: 579-602. 2014
J. Gubanov I. A., Konspekt flory vnešnej Mongolii (sosudistye rastenija). 1996 (as Taraxacum ceratophorum)
K. Hajra P. K., Rao R. R., Singh D. K. and Uniyal B. P., Flora of India 12. 1995 (as Taraxacum ceratophorum)
L. Hajra P. K., Rao R. R., Singh D. K. and Uniyal B. P., Flora of India 12. 1995 (as Taraxacum ceratophorum)
M. Tutin T. G, Heywood V. H., Burges N. A. & al., Flora europaea 4. 1976 (as Taraxacum ceratophorum aggr.)
N. Anonymous [Association Tela Botanica], Tela Botanica. Flore électronique. Flores en ligne, France métropolitaine (as Taraxacum ceratophorum)
O. Guinochet, M. & Vilmorin, R. de, Flore de France 4. 1982 (as Taraxacum ceratophorum)
P. Kerguélen, M., Index synonymique de la flore de France. 1993 (as Taraxacum ceratophorum)
Q. Conti, F., Abbate, G., Alessandrini, A., Blasi, C., An annotated checklist of the Italian vascular flora. 2005 (as Taraxacum ceratophorum aggr.)
R. Fedorov, A. A., Flora evropejskoj časti SSSR 8 [Cvelev, N. N.]. 1989 (as Taraxacum bicorne)
S. Jurcev, B. A., Flora arctica URSS 10. 1987 (as Taraxacum bicorne)
T. Hess, H. E., Bestimmungsschlüssel zur Flora der Schweiz und angrenzender Gebiete, ed. 4. 1998 (as Taraxacum ceratophorum)
U. Schinz, H. & Keller, R., Flora der Schweiz, ed. 3, 2. 1914 (as Taraxacum officinale subsp. ceratophorum)