学名(拉丁名) | Artemisia sichuanensis |
中文名 | 四川艾 |
命名人 | Ling et Y. R. Ling |
中文科名 | 菊科 |
拉丁属名 | Artemisia |
类型 | species |
拉丁科名 | Compositae |
中文属名 | 蒿属 |
学名(拉丁名) | Artemisia sichuanensis |
命名人 | Ling & Y.R. Ling (accepted name) |
拉丁属名 | Artemisia |
类型 | species |
拉丁科名 | Asteraceae |
学名(拉丁名) | Artemisia sichuanensis |
中文名 | 四川艾 |
拉丁属名 | Artemisia |
类型 | species |
拉丁科名 | Asteraceae |
学名(拉丁名) | Artemisia sichuanensis |
中文名 | 四川艾 |
中文科名 | 菊科 |
拉丁属名 | Artemisia |
类型 | species |
拉丁科名 | Asteraceae |
中文属名 | 蒿属 |
学名 | 状态 | 来源 | 命名人 |
---|---|---|---|
Artemisia sichuanensis var. sichuanensis | Synonym | The Plant List |
1 | Leaves abaxially glabrescent. (126) | a var. sichuanensis |
1 + | Leaves abaxially densely gray arachnoid tomentose. (126) | b var. tomentosa |
Herbs perennial, 36-100 cm tall; rhizomes long, slender, stoloniferous. Stems erect, simple, sometimes distally branched, ± flexuous, ± striate, hispid-villous, minutely stipitate glandular. Leaves cauline, slightly reduced upward, abaxially pale green, adaxially green, abaxially hispid-strigose, densely so on veins, adaxially hispid-strigose, both surfaces sparsely minutely stipitate glandular in pits, margin coarsely serrate to serrate, hispid, strigose, or villous-ciliate, midvein prominent abaxially, apex acuminate, mucronate; lowest leaves withered by anthesis (not seen); lower to upper leaves broadly winged petiolate; blade ovate to lanceolate, 3.5-5.5(-10) × 1.5-2.5(-4) cm, base cuneate-rounded to rounded; synflorescence leaves broadly winged shortly petiolate, lanceolate, 1.3-2 × 0.6-0.9 cm, base cuneate, margin 3-6-serrate, slightly resinous. Capitula 16 or more in terminal corymbiform synflorescences, ca. 1.5 cm in diam.; peduncles 7-15 mm or longer, densely hispid-strigose, minutely stipitate glandular, resinous; bracts lanceolate, entire. Involucres campanulate, (4-)5-5.2 × ca. 5 mm; phyllaries 4-seriate, unequal, green apically, abaxially distally villosulous and minutely stipitate glandular, margin scarious, erose, moderately to densely villous-ciliate, midvein more pronounced distally, ± translucent, apex acute to rounded, villous-ciliate; outer phyllaries narrowly ovate, 1.5-2 × ca. 0.8 mm; inner phyllaries oblong, 3-6 × 1.8-1.2 mm, base hardened. Ray florets 10-14 or more, purple, tube apex and lamina base strigose, lamina 6-7(-9) × 1-1.5 mm, eglandular; disk florets yellow, (4-)5 mm, tube base flared, tube apex and proximal limb hairy, minutely stipitate glandular, limb campanulate, ca. 3.2 mm, lobes spreading, narrowly triangular, curved, ca. 1.5 mm, apically sparsely hairy, moderately to densely minutely stipitate glandular. Achenes (immature) oblong, slightly compressed, 2-3 mm, sparsely strigillose, sparsely minutely stipitate glandular, 2-ribbed (± translucent). Pappus 4-seriate, ± reddish; outermost bristles few, slender, 0.5-0.6 mm; outer bristles slender, 2-2.3 mm; inner bristles few, ca. 3 mm, acute; innermost bristles ca. 4 mm, weakly clavate. Fl. and fr. Jul-Oct.
Shaded places in valleys of low mountains or canal banks; 800-1600 m. Anhui, Henan, NW Hubei, S Shaanxi, Sichuan.
126.四川艾(植物研究)白蒿(四川)
Artemisia sichuanensis Ling et Y. R. Ling in Bull. Bot. Res. 4 (2): 21, fig. 5. 1984
126a. 四川艾(原变种)
Artemisia sichuanensis Ling et Y. R. Ling var. sichuanensis
多年生草本。主根稍粗大,侧根多枚;根状茎稍粗,直径达3-8毫米,半木质。茎通常单一,高1-1.5米,下部直立,上半部常扭曲成之字形,上升或斜上展,具纵棱,上部分枝,长10-20厘米;茎、枝疏被短柔毛与短腺毛。叶纸质,上面初时密被腺毛,脉上腺毛更密,后稍稀疏,背面初时被灰白色蛛丝状绒毛,后渐稀疏或近无毛;下部与中部叶宽卵形,长8-11厘米,宽7-9厘米,3-5深裂,裂片椭圆形或长椭圆形,中央裂片最长,长6-8厘米,宽1.5-2.5厘米,先端锐尖,裂片边缘有时具2-3枚稀疏浅锯齿或无锯齿;叶基部渐狭成短柄,叶柄长0.3-1厘米,基部通常无假托叶;上部叶与苞片叶指状3深裂或不分裂,裂片或不分裂之苞片叶椭圆形,先端锐尖,全缘,稀有2-4枚细而稀疏的浅锯齿。头状花序宽卵形或卵钟形,直径2.5-3毫米,无梗或近无梗,基部有细小、披针形的小苞叶,在分枝上半部排成穗状花序,并在茎上组成中等开展的圆锥花序;总苞片3层,外层略短小,外、中层总苞片卵形或长卵形,背面初时微有短柔毛,后无毛,有绿色中肋,边膜质,内层总苞片长卵形或长圆形,半膜质;雌花5-8朵,花冠狭管状或狭圆锥状,檐部具2裂齿,花柱伸出花冠外,先端2叉,叉端钝尖;两性花8-12朵,花冠管状或近高脚杯状,花药线形,先端附属物尖,长三角形,基部圆钝,花柱近与花冠等长,先端2叉,叉端截形,并有睫毛。瘦果小,倒卵形。花果期8-10月。
产四川中部;生于海拔2 500米地区的山坡、草丛、林缘及林中空地等。模式标本采自四川峨眉山。
126b.密毛四川艾(变种)
Artemisia sichuanensis Ling et Y. R. Ling var. tomentosa Ling et Y. R. Ling l. c. 4(2): 22. 1984
与原变种区别在于本变种茎中部叶的裂片边缘具2-3枚深裂齿,叶面腺毛稀疏或脱落,背面密被灰白色蛛丝状绵毛。
产四川西部(天全附近)。模式标本采自四川天全。