討論:台灣蒲公英

山羊百科，林文智老師的植物、山岳、攝影紀錄

57.台湾蒲公英 Taraxacum formosanum Kitamura, Acta Phytotax. Geobot. 2: 48. 1933.

Herbs 8-15 cm tall. Leaves numerous, prostrate to erect-patent; petiole narrow; leaf blade grayish green, narrowly oblanceolate to linear, 6-18 × 1-3 cm, almost glabrous, pinnatilobed to pinnatisect; lateral lobes 3-5 pairs, broadly triangular, often with obtuse broad tooth on apical margin; interlobes broad, margin entire; terminal lobe triangular to helmet-shaped, 1.5-3 × 1-2 cm, often pentagonal, apex rounded to subobtuse. Scapes brownish green, equaling to slightly overtopping leaves, scattered arachnoid. Capitulum ca. 3 cm wide. Involucre pale green, 6-8 mm wide, base ± rounded. Outer phyllaries 13-15, mid-green, ± imbricate, linear-lanceolate to narrowly lanceolate, outermost ones 4.5-6 × 0.8-1.5 mm and 1/3-2/5 as long as inner ones, loosely appressed, distinctly veined, border indistinct, paler green to membranous, and to 0.2 mm wide, margin ± glabrous, apex with a green or purplish thick horn to 1 mm; inner phyllaries 1.1-1.3 cm, apex corniculate. Ligules yellow; outer ligules outside striped blackish purple; inner ligules with blackish apical teeth. Stigmas pale green to ± yellow. Anthers polliniferous; pollen grains regular in size. Achene brown, ca. 4 × 1-1.2 mm; body tuberculate throughout, apically tuberculate-squamulose, gradually narrowing into a subcylindric 0.8-1 mm cone; beak 7-10 mm. Pappus white, 4-5 mm. Fl. Mar-Apr. Sexual. 2n = 16*.

● Seashore dunes, open ruderal places; below 200 m. Taiwan. This species was also reported from Liaoning (Kitagawa, Bot. Mag. (Tokyo) 47: 830-831. 1933), but the material belongs to other species.

58. 蒙古蒲公英 Taraxacum mongolicum Handel-Mazzetti, Monogr. Taraxacum. 67. 1907.

Herbs 8-25 cm. Petiole usually narrow; leaf blade mid-green, oblanceolate, 6-15 × 2-3.5 cm, subglabrous to sparsely arachnoid, pinnatilobed, pinnatisect, or rarely undivided; lateral lobes 3 or 4 pairs, broadly triangular, obtusely deltoid, or broadly linear, patent to recurved, distal margin sparsely dentate or entire, apex obtuse; interlobes broad, sometimes spotted dark purple, margin entire to sparsely dentate; terminal lobe broadly triangular, apex broadly obtuse. Scapes single or rarely branched with an ascending side scape, brownish green, equaling to slightly overtopping leaves, scattered arachnoid but densely arachnoid below capitulum. Capitulum 3-4 cm wide. Involucre mid-green, 1-1.2 cm wide, base ± rounded. Outer phyllaries 9-15, mid-green to pale green, ± not imbricate, linear-lanceolate to narrowly lanceolate, outermost ones 6-9 × 0.8-2.5 mm and ca. 1/2 as long as inner ones, loosely appressed, distinctly veined, border indistinct, paler green to membranous, often suffused pink, and 0.1-0.3 mm wide, margin ± densely ciliate, apex with a green or purplish thick horn to 1.5 mm; inner phyllaries 1.1-1.5 cm, apex flat to corniculate. Ligules yellow; outer ligules outside striped grayish purple; inner ligules with blackish to purple apical teeth. Stigmas pale green. Anthers polliniferous; pollen grains irregular in size. Achene ± brown to grayish brown, 4.2-4.6 × 1.1-1.3 mm; body tuberculate throughout, apically densely tuberculate-squamulose, gradually narrowing into a subconic 1-1.2 mm cone; beak 7-10 mm. Pappus yellowish, ca. 6 mm. Fl. spring, occasionally also to late summer. Agamosperm. 2n = 24*.