学名(拉丁名) | Ainsliaea trinervis |
中文名 | 三脉兔儿风 |
命名人 | Y. C. Tseng |
中文科名 | 菊科 |
拉丁属名 | Ainsliaea |
类型 | species |
拉丁科名 | Compositae |
中文属名 | 兔儿风属 |
学名(拉丁名) | Ainsliaea trinervis |
命名人 | Y.C. Tseng (accepted name) |
拉丁属名 | Ainsliaea |
类型 | species |
拉丁科名 | Asteraceae |
学名(拉丁名) | Ainsliaea trinervis |
中文名 | 三脉兔儿风 |
拉丁属名 | Ainsliaea |
类型 | species |
拉丁科名 | Asteraceae |
学名(拉丁名) | Ainsliaea trinervis |
中文名 | 三脉兔儿风 |
中文科名 | 菊科 |
拉丁属名 | Ainsliaea |
类型 | species |
拉丁科名 | Asteraceae |
中文属名 | 兔儿风属 |
Ainsliaea macroclinidioides Hayata var. oblonga (Koidzumi) Hatusima; A. oblonga Koidzumi.
Herbs, perennial, 30-60 cm tall. Leaves loosely aggregated near median part of stem; petiole 1-1.5 cm, wingless; leaf blade narrowly elliptic, narrowly lanceolate, or lanceolate, 5-9.5 × 0.5-2.5 cm, papery, apparently 3-veined, both surfaces glabrous, base attenuate, slightly decurrent, margin denticulate or obscurely denticulate, apex long acuminate. Capitula shortly pedunculate, arranged in panicles, 3-flowered; involucre cylindric, 2-3 mm in diam.; phyllaries ca. 7-seriate, papery, abaxially glabrous, outer phyllaries ovate, 1-2 mm, inner narrowly elliptic, 1-1.2 cm. Florets bisexual, chasmogamous, corollas pink to white, tubular, ca. 9 mm, deeply 5-lobed, lobes oblong, unequal, anther appendages rounded to truncate. Achenes terete, ca. 3 mm, densely pilose; pappus dark yellow or light yellow, ca. 8 mm. Fl. Jul-Sep.
Stream banks, moist areas in dense forests; 600-900 m. N Fujian, Guangdong, Guangxi, SW Guizhou, S Jiangxi [Japan].
According to Freire (Ann. Missouri Bot. Gard. 94: 179. 2007), Ainsliaea oblonga is very close to A. trinervis but differs in having leaf blades lanceolate, 1-2.5 cm wide, with margin obscurely denticulate (vs. narrowly lanceolate, 0.5-1.3 cm wide, with margin denticulate in A. trinervis). Further studies will be necessary to determinate whether or not they are conspecific.
According to Freire (Ann. Missouri Bot. Gard. 94: 179. 2007), Ainsliaea oblonga is very close to A. trinervis but differs in having leaf blades lanceolate, 1-2.5 cm wide, with margin obscurely denticulate (vs. narrowly lanceolate, 0.5-1.3 cm wide, with margin denticulate in A. trinervis). Further studies will be necessary to determinate whether or not they are conspecific.
38.三脉兔儿风 图版11: 1-3
Ainsliaea trinervis Y. C. Tseng in Acta Phytotax. Sinica 31: 367. 1993.
多年生草本。根状茎短,直,圆柱状,稀略弯曲,直径4-5毫米,根颈被黄褐色绒毛;须根极密,长可达20余厘米。茎直立,单一或少有自根颈发出数枝,高30-60厘米,基部直径2-4毫米,下部疏被短柔毛或脱落变无毛,叶丛中及叶腋内被毛较长而密。叶聚生于茎的中部,通常离基13-25厘米,下方数片节间长1-15厘米,余者密集的其节间长仅2-3毫米,叶片纸质,狭椭圆形或披针形,长5-9.5厘米,宽5-13毫米,顶端长渐尖,中脉延伸复形成长近1毫米的凸尖头,基部渐狭,略下延,边缘背卷,每侧向两端各具6-8个、长1-1.5毫米的芒状细齿,上面深绿色,背面淡绿色,两面均无毛;基出脉3条,两面均凸起,于下面尤著,两侧的1对上升直达叶片顶部,中脉上部具极少、不规则的柔弱侧脉,网脉无;叶柄长1-1.5厘米,基部被疏柔毛。头状花序具被短柔毛的柄,内含小花3朵,于茎顶排成圆锥花序;圆锥花序轴被短柔毛,分枝短,柔弱,基部具钻形或狭三角形的苞叶;总苞圆筒形,直径2-3毫米;总苞片约7层,无毛,背部有纵纹,外1-3层卵形,长1-2毫米,宽0.8-1毫米,顶端钝,中层卵状披针形,长3-5毫米,宽1.5-2毫米,顶端亦钝,最内层狭椭圆形,长10-12毫米,宽约1.8毫米,顶端渐尖;花托狭,无毛,直径约0.8毫米。花全部两性,花冠白色,长约9毫米,花冠管纤细,管口上方5深裂,裂片偏于I侧,长圆形,约与花冠管等长;花药顶端钝圆或近截平,长约5毫米,基部的尖尾长为花药的2/5;子房倒锥形,密被粗毛,长约2.5毫米,花柱分枝伸出于药筒之外,内侧扁,顶端钝圆,长不足0.5毫米。瘦果圆柱形,密被粗毛,长约3毫米。冠毛淡黄色或污黄色,羽毛状,长约8毫米,基部稍联合。花期7-9月。
产于贵州西南部(榕江)、广西北部(融水、龙胜)、广东北部(连县、乳源、仁化)、江西南部(寻乌)和福建北部(崇安)。生于水旁、山谷密林中,海拔 600-900米。模式标本采自广西融县。
本种外形与华南兔儿风 Alinsliaea walkeri Hook. f.比较相似,但华南兔儿风的叶狭长圆形或线形,顶端突尖,边缘每侧仅于近顶部具1-3个刺状尖齿,基部仅1脉而迥然有别。