1. Compositae (菊科)
2. Aster (紫菀属)
3. Aster trichoneurus (毛脉紫菀)

1. ASTERACEAE (菊科)
2. Aster
3. Aster trichoneurus (毛脉紫菀 )

1. ASTERACEAE (菊科)
2. Aster
3. Aster trichoneurus (毛脉紫菀)

1. Asteraceae
2. Aster
3. Aster trichoneurus

1. Asteraceae
2. Incertae sedis group
3. Aster trichoneurus (毛脉紫菀)

1. Asteraceae (菊科)
2. Aster (紫菀属)
3. Aster trichoneurus (毛脉紫菀)

Herbs, perennial, 30-50 cm tall; rhizomes thick. Stems erect, simple, densely villous, more sparsely so upward, densely minutely stipitate glandular. Leaves cauline, somewhat reduced upward, base sometimes marcescent, abaxially villosulous, adaxially strigillose, both surfaces minutely stipitate glandular, thin, margin serrulate to serrate, villosulous-ciliate, 3-veined, lower secondary veins prominent, apex obtuse to acute, mucronulate; lowest leaves withered by anthesis, long winged petiolate, petiole base auriculate; blade oblanceolate, base attenuate; lower to upper leaves shortly winged petiolate (base clasping) to sessile, oblanceolate to oblong, 3-8 × 0.7-1.8 cm, base rounded; synflorescence leaves lanceolate, 2-3.5 × 0.5-0.9 cm, base cuneate-rounded, margin entire. Capitula 3 or 4 or more (simple specimen) in terminal corymbiform synflorescences, rarely solitary, ca. 3 cm in diam.; peduncles 25-90 mm, strigillose to villosulous, densely minutely stipitate glandular; bracts lanceolate to linear-lanceolate, entire. Involucres broadly campanulate, 5-6(-7) × ca. 10 mm; phyllaries 3-seriate, nearly subequal, abaxially strigillose to villosulous, sparsely to densely minutely stipitate glandular, base hardened, midvein slightly translucent, distal margin and apex ± purplish; outer phyllaries linear-oblong, 4-4.6 × 0.6-0.7 mm, distal 1/2 leaflike, margin barely to ± scarious, ciliate, glandular, apex sometimes spreading or squarrose, acute, mucronulate, ciliate; middle phyllaries linear-oblong to linear-lanceolate, 5-6 × 1-1.2 mm, margin narrowly scarious, tip green or sometimes leaflike, apex acute to acuminate; inner phyllaries linear-lanceolate, 5-5.5 × ca. 1 mm, margin broadly scarious, erose, tip green, apex erose. Ray florets 23-27, blue, tube sparsely strigillose, lamina 7-9 × 1.6-2 mm, eglandular; disk florets yellow, ca. 4.5 mm, limb campanulate, ca. 3 mm, proximally sparsely strigillose and minutely stipitate glandular, lobes erect, tip sometimes spreading, narrowly triangular, ca. 1 mm, tip sparsely strigillose and minutely stipitate glandular. Achenes narrowly obovoid, ± compressed, 2.5-2.8 mm, densely strigillose, sparsely strigillose on ribs, minutely stipitate glandular apically, 2-ribbed. Pappus 3- or 4-seriate, straw-colored, of slender barbellate bristles; outermost bristles few, 0.2-0.5 mm; outer bristles absent or 1, ca. 2 mm; inner bristles 3.5-3.7 mm, tapering; innermost bristles 4.2-4.3 mm, barely clavate. Fl. and fr. Sep.

Ravines, mountain canals; ca. 2700 m. NW Yunnan (Dêqên).

Aster trichoneurus is similar to A. auriculatus but differs in its broader and larger, 3-veined leaves without clasping auricles, and narrow, sparsely hairy phyllaries.

10. 毛脉紫菀

Aster trichoneurus Ling in Addenda 355. ——Aster hispidulus Chang in Sched., non Kuntz.

多年生草本，根状茎粗壮。茎直立，高30-50厘米，常粗壮，有浅沟，下部稍木质且被开展的长粗毛，上部被贴伏或开展的短毛，上部有分枝。下部叶在花期枯萎，有具翅的长柄；中部叶长圆形或舌状长圆形，长6-10厘米，宽1-2.3厘米，下部急狭或近圆形，常半抱茎，但无显明的耳部，近全缘，顶端钝或近圆形，有小尖头；上部叶渐小，长圆形或长圆状线形，尖或渐尖；全部叶稍薄质，上面被较密的且近缘有较长的粗毛，下面被短毛及腺而沿脉有较长的粗毛；中脉在两面突起，离基三出脉，基出脉及侧脉显明。头状花序径约3厘米，伞房状排列或单生；花序梗长3-5厘米，有线形苞叶。总苞半球形，长7毫米，径约10毫米；总苞片3层，线状披针形，渐尖，外层长3-4毫米，宽0.5-0.8毫米，上部草质，下部稍革质，被疏柔毛及腺；内层长约7毫米，宽1毫米，上端草质，被疏毛，下部边缘宽膜质，有缘毛。舌状花约20余个，管部长4毫米，有短毛。管状花花冠长6毫米。冠毛污白色，约与管状花花冠等长，有近等长的糙毛。瘦果倒卵状长圆形，稍扁，长2.5-2.8毫米，密被短粗毛。果期9月。

产于云南西北部（德钦）。生于山沟中。海拔2700米。

此种似与耳叶紫菀 (A. auriculatus Franch.) 稍接近，但叶较宽大，无抱茎的耳部有离基三出脉，总苞片也较狭，被疏毛而无密腺毛。

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