拉萨蒲公英Taraxacum sherriffii V. Soest
拉萨蒲公英Taraxacum sherriffii V. Soest
63.拉萨蒲公英（西藏植物志）图版15：1-4
Taraxacum sherriffii V. Soest in Bull. Brit. Mus. (Nat. Hist.) Bot. 2 (10): 272. 1961. et in Wentia 10: 63. f. 31. 1963. descr. add. ; Nasir et Ali, Fl. W. Pakistan 794. 1972.
多年生草本。根颈部有残存叶基，下部多少被蛛丝状柔毛。叶长13-15厘米。宽约1.8厘米，外层叶先端钝，近全缘，或每侧具3裂，侧裂片正三角形；内层叶每侧具5裂，侧裂片狭窄，披针形或线形，先端略钝，全缘或有一小齿，平展或倒向；裂片间距较长，长可达15毫米，宽约3毫米；顶端裂片常大，先端略钝，叶柄短。花葶2-3个，纤细，高10-12厘米，不等长，上端有蛛丝柔毛或近无毛；头状花序直径20-25毫米；总苞钟形，长约11毫米，宽约15毫米，暗绿色；外层总苞片伏贴，披针形，尖，具宽、白色或绿色边缘，先端有小角；内层总苞片线形，具膜质边缘，无毛；舌状花黄色，边缘花舌片背面有灰紫色条纹，柱头和花柱黄色。瘦果麦秆黄色，长3-4毫米，上部具较粗的小刺，下部具小瘤，顶端略突然缢缩为长1.8毫米的圆柱形喙基，喙长6毫米；冠毛白色，长6-7毫米。
产青海、云南西北部及西藏。生于海拔2300-4500米山坡草地。克什米尔也有分布。模式标本采自西藏拉萨。
本种外层总苞片先端有显著小角及较宽的边缘，与毛柄蒲公英 T. eriopodum（D. Don）DC.明显不同。
形态特征：多年生草本。根颈部有残存叶基，下部多少被蛛丝状柔毛。叶长13—15厘米．宽约1．8厘米，外层叶先端钝，近全缘，或每侧具3裂，侧裂片正三角形；内层叶每侧具5裂，侧裂片狭窄，披针形或线形，先端略钝，全缘或有一小齿，平展或倒向；裂片间距较长，长可达15毫米，宽约3毫米；顶端裂片常大，先端略钝，叶柄短。花葶2—3个，纤细，高10—12厘米，不等长，上端有蛛丝柔毛或近无毛；头状花序直径20—25毫米；总苞钟形，长约11毫米，宽约15毫米，暗绿色；外层总苞片伏贴，披针形，尖，具宽、白色或绿色边缘，先端有小角；内层总苞片线形，具膜质边缘，无毛；舌状花黄色，边缘花舌片背面有灰紫色条纹，柱头和花柱黄色。瘦果麦秆黄色，长3—4毫米，上部具较粗的小刺，下部具小瘤，顶端略突然缢缩为长1．8毫米的圆柱形喙基，喙长6毫米；冠毛白色，长6—7毫米。
产地分布：产青海、云南西北部及西藏。生于海拔2300--4500米山坡草地。克什米尔也有分布。模式标本采自西藏拉萨。
本种提示：本种外层总苞片先端有显著小角及较宽的边缘，与毛柄蒲公英T．Eriopodum(D．Don)DC．明显不同。
参考文献：TaraxacumsherriffiiV．Soest inBull．Brit．Mus． (Nat．Hist．)Bot．2(10)：272． 1961．Et in Wentia 10：63．F．31．1963．Descr．Add．；Nasir et Ali，F1．W．Pakistan 794．1972.
《Flora of China》 Vol. 20-21 (2011)
51. Taraxacum sherriffii Soest, Bull. Brit. Mus. (Nat. Hist.), Bot. 2: 272. 1961.
拉萨蒲公英 la sa pu gong ying
Herbs 12-15 cm tall, base often thickened by remnants of old petioles. Petiole pale green, ± unwinged; leaf blade mid-green to slightly grayish green, narrowly oblanceolate to broadly linear in outline, 10-13 × 1.5-1.8 cm, sparsely arachnoid, pinnatilobed to pinnatisect but some almost undivided, midvein pale green; lateral lobes of inner leaves 3-5 pairs, linear-triangular, narrow, usually ± patent to recurved, margin entire or distal side with a single tooth on base; interlobes long, narrow, to 1.5 × 0.3 cm, margin entire; terminal lobe subobtuse, margin usually entire, basal segments ± patent. Scapes brownish green, ± equaling leaves, sparsely arachnoid to subglabrous. Capitulum 2-2.5 cm wide. Involucre 7-10 mm wide, base ± rounded. Outer phyllaries (11-)13-19, blackish green, ± not imbricate, linear-lanceolate, outermost ones 5-8 × 1.3-2 mm and ca. 3/4 as long as inner ones, ± appressed, with a whitish narrow ca. 0.4 mm border, margin glabrous to sparsely ciliate, apex with a conspicuous horn; inner phyllaries 1-1.2 cm, callose below apex. Ligules yellow; outer ligules flat, outside striped pinkish gray; inner ligules with grayish purple teeth. Stigmas slightly grayish or greenish pale yellow. Anthers polliniferous; pollen grains irregular in size. Achene light gray straw-colored brown when unripe but later getting darker and becoming blackish gray(-brown), 4.5-5.9 × 1.1-1.4 mm; body spinulose in upper 1/2-3/5 on ridges and apically also elsewhere, ± subgradually narrowing into a cylindric 1-1.5 mm cone, spinules thick and acute; beak 4-5.5 mm. Pappus ± white, ca. 6 mm. Fl. late spring. Agamosperm.● Disturbed grasslands; 3500-3600 m. Xizang.
Reports of Taraxacum sherriffii from Qinghai (FRPS 80(2): 66. 1999; Higher Pl. China 11: 785. 2005) and NW Yunnan (FRPS 80(2): 66. 1999) need revision.In the region of Lhasa, Xizang, sexual plants similar to Taraxacum sherriffii are found. They are characterized by obconic involucre and smaller and paler achenes. Further study is needed.
科名：菊科 Compositae
属名：蒲公英属 Taraxacum
63.拉萨蒲公英（西藏植物志）图版15：1-4
Taraxacum sherriffii V. Soest in Bull. Brit. Mus. (Nat. Hist.) Bot. 2 (10): 272. 1961. et in Wentia 10: 63. f. 31. 1963. descr. add. ; Nasir et Ali, Fl. W. Pakistan 794. 1972.
多年生草本。根颈部有残存叶基，下部多少被蛛丝状柔毛。叶长13-15厘米。宽约1.8厘米，外层叶先端钝，近全缘，或每侧具3裂，侧裂片正三角形；内层叶每侧具5裂，侧裂片狭窄，披针形或线形，先端略钝，全缘或有一小齿，平展或倒向；裂片间距较长，长可达15毫米，宽约3毫米；顶端裂片常大，先端略钝，叶柄短。花葶2-3个，纤细，高10-12厘米，不等长，上端有蛛丝柔毛或近无毛；头状花序直径20-25毫米；总苞钟形，长约11毫米，宽约15毫米，暗绿色；外层总苞片伏贴，披针形，尖，具宽、白色或绿色边缘，先端有小角；内层总苞片线形，具膜质边缘，无毛；舌状花黄色，边缘花舌片背面有灰紫色条纹，柱头和花柱黄色。瘦果麦秆黄色，长3-4毫米，上部具较粗的小刺，下部具小瘤，顶端略突然缢缩为长1.8毫米的圆柱形喙基，喙长6毫米；冠毛白色，长6-7毫米。
产青海、云南西北部及西藏。生于海拔2300-4500米山坡草地。克什米尔也有分布。模式标本采自西藏拉萨。
本种外层总苞片先端有显著小角及较宽的边缘，与毛柄蒲公英 T. eriopodum（D. Don）DC.明显不同。
形态特征：多年生草本。根颈部有残存叶基，下部多少被蛛丝状柔毛。叶长13—15厘米．宽约1．8厘米，外层叶先端钝，近全缘，或每侧具3裂，侧裂片正三角形；内层叶每侧具5裂，侧裂片狭窄，披针形或线形，先端略钝，全缘或有一小齿，平展或倒向；裂片间距较长，长可达15毫米，宽约3毫米；顶端裂片常大，先端略钝，叶柄短。花葶2—3个，纤细，高10—12厘米，不等长，上端有蛛丝柔毛或近无毛；头状花序直径20—25毫米；总苞钟形，长约11毫米，宽约15毫米，暗绿色；外层总苞片伏贴，披针形，尖，具宽、白色或绿色边缘，先端有小角；内层总苞片线形，具膜质边缘，无毛；舌状花黄色，边缘花舌片背面有灰紫色条纹，柱头和花柱黄色。瘦果麦秆黄色，长3—4毫米，上部具较粗的小刺，下部具小瘤，顶端略突然缢缩为长1．8毫米的圆柱形喙基，喙长6毫米；冠毛白色，长6—7毫米。
产地分布：产青海、云南西北部及西藏。生于海拔2300--4500米山坡草地。克什米尔也有分布。模式标本采自西藏拉萨。
本种提示：本种外层总苞片先端有显著小角及较宽的边缘，与毛柄蒲公英T．Eriopodum(D．Don)DC．明显不同。
参考文献：TaraxacumsherriffiiV．Soest inBull．Brit．Mus． (Nat．Hist．)Bot．2(10)：272． 1961．Et in Wentia 10：63．F．31．1963．Descr．Add．；Nasir et Ali，F1．W．Pakistan 794．1972.
《Flora of China》 Vol. 20-21 (2011)
51. Taraxacum sherriffii Soest, Bull. Brit. Mus. (Nat. Hist.), Bot. 2: 272. 1961.
拉萨蒲公英 la sa pu gong ying
Herbs 12-15 cm tall, base often thickened by remnants of old petioles. Petiole pale green, ± unwinged; leaf blade mid-green to slightly grayish green, narrowly oblanceolate to broadly linear in outline, 10-13 × 1.5-1.8 cm, sparsely arachnoid, pinnatilobed to pinnatisect but some almost undivided, midvein pale green; lateral lobes of inner leaves 3-5 pairs, linear-triangular, narrow, usually ± patent to recurved, margin entire or distal side with a single tooth on base; interlobes long, narrow, to 1.5 × 0.3 cm, margin entire; terminal lobe subobtuse, margin usually entire, basal segments ± patent. Scapes brownish green, ± equaling leaves, sparsely arachnoid to subglabrous. Capitulum 2-2.5 cm wide. Involucre 7-10 mm wide, base ± rounded. Outer phyllaries (11-)13-19, blackish green, ± not imbricate, linear-lanceolate, outermost ones 5-8 × 1.3-2 mm and ca. 3/4 as long as inner ones, ± appressed, with a whitish narrow ca. 0.4 mm border, margin glabrous to sparsely ciliate, apex with a conspicuous horn; inner phyllaries 1-1.2 cm, callose below apex. Ligules yellow; outer ligules flat, outside striped pinkish gray; inner ligules with grayish purple teeth. Stigmas slightly grayish or greenish pale yellow. Anthers polliniferous; pollen grains irregular in size. Achene light gray straw-colored brown when unripe but later getting darker and becoming blackish gray(-brown), 4.5-5.9 × 1.1-1.4 mm; body spinulose in upper 1/2-3/5 on ridges and apically also elsewhere, ± subgradually narrowing into a cylindric 1-1.5 mm cone, spinules thick and acute; beak 4-5.5 mm. Pappus ± white, ca. 6 mm. Fl. late spring. Agamosperm.● Disturbed grasslands; 3500-3600 m. Xizang.
Reports of Taraxacum sherriffii from Qinghai (FRPS 80(2): 66. 1999; Higher Pl. China 11: 785. 2005) and NW Yunnan (FRPS 80(2): 66. 1999) need revision.In the region of Lhasa, Xizang, sexual plants similar to Taraxacum sherriffii are found. They are characterized by obconic involucre and smaller and paler achenes. Further study is needed.