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FOC | Family List | FOC Vol. 20-21 | Asteraceae | Taraxacum

9. Taraxacum sect. Turrita Kirschner & Štepánek, Fl. China. 20-21: 301. 2011.

塔状蒲公英组 ta zhuang pu gong ying zu

Type: Taraxacum turritum Kirschner & Štěpánek.

Plantae agamospermae subserotinae, plerumque altae, turritae, foliis erectis, rectis, subcoriaceis, pinnatisectis, lobis laterialibus et lobo terminali acuminatis, petiolis anguste alatis, capitulis magnis, phyllariis involucralibus exterioribus numerosis (15 ad 25), angustis, lineari-lanceolatis usque lanceolatis, suberectis usque arcuato-patentibus, olivaceo-viridibus, anguste indistincte marginatis, obscure callosis vel corniculatis, ligulis luteis, tubo flosculorum pubescente, acheniis pallide stramineo-brunneis vel pallide olivaceo-brunneis, longissimis, (4-)5-6.1 mm longis, 1-1.3 mm latis, corpore superne subsparse usque dense spinuloso-squamuloso, sensim vel subabrupte in pyramidem angustam subcylindricam (1-)1.2-2.2 mm longam transiente, rostro 0.8-1.2 cm, pappo albido-lutescente 7-8 mm longo.

Plants usually tall. Leaves erect, straight, subleathery; petiole usually narrowly winged; leaf blade narrow, pinnatisect; lateral and terminal lobes usually acuminate at apex. Capitulum large. Outer phyllaries 15-25, linear-lanceolate to lanceolate, narrow, from suberect to arcuate-patent (of almost evenly "echinate" appearance), olivaceous green, indistinctly narrowly bordered, apex dark callose to less often corniculate. Ligules yellow; floret tube pubescent. Achene light grayish straw-colored brown to light olivaceous brown, (4-)5-6.1 × 1-1.3 mm; body subsparsely to densely spinulose and/or squamulose in upper ca. 1/3, gradually to subabruptly narrowing into a ± thin subcylindric (1-)1.2-2.2 mm cone; beak 0.8-1.2 cm, thin. Pappus yellowish white to light brownish white, 7-8 mm. Agamosperms.

About six species: C Asia to China; three species (all endemic) in China.


1 Pollen absent.   68 T. turritum
+ Pollen present   (2)
       
2 (1) Achene 5.3-5.6 mm, cone 1.3-1.6 mm.   69 T. celsum
+ Achene 4.2-4.4 mm, cone ca. 1 mm.   70 T. orientale

Lower Taxa


 

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