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- Stamens 30-40, subequal, possibly monomorphic. 雄蕊30-40,近等长,也许单型。
- Branches many per node, deflexed, subequal. 分枝很多每节,外折,近等长。
- Calyx lobes sometimes subequal, persistent. 有时的萼裂片近等长,宿存。
- Corolla lobes 5, subequal, rounded, tube short. 花冠裂片5,近等长,圆形,筒部短。
- Mid-culm branches 3, subequal or central dominant. 中间秆的分枝3,近等长的或中心有势力。
- Utricles ovoid, subequal to perianth, ca. 3 mm, circumscissile. 胞果卵形体,近等长于花被,约3毫米,周裂。
- Style apex 2-cleft, lobes subulate, equal or subequal. 花柱先端2半裂,裂片,等长或近等长。
- Culm sheath auricles subequal; culm internodes with purple stripes initially. 竿箨耳廓近等长;最初的用紫色的条纹节间的秆。
- Corolla lobes subequal, rounded or lacerate, tube small, yellow or pale red. 花冠裂片近等长,圆形的或撕裂状,筒部小,黄的或浅红色。
- Calyx campanulate to tubular, 10-veined, 5-toothed, teeth equal or subequal. 花萼钟状到管状,10脉,5齿,齿等长或近等长。
- Corolla blue-purple, ca.1.2 cm long, white pubescent,2- lipped, upper lip2- lobed, lower lip3- lobed; lobes subequal. 花冠蓝紫色,长1.;2厘米,被白色短柔毛,二唇形,上唇2裂,下唇3裂,裂片近相等。
- Corolla blue-purple, ca. 1.2 cm long, white pubescent, 2-lipped, upper lip 2-lobed, lower lip 3-lobed; lobes subequal. 花冠蓝紫色,长1.;2厘米,被白色短柔毛,二唇形,上唇2裂,下唇3裂,裂片近相等。
- Female perianth lobes free, subequal or lateral ones slightly larger, all oblong-cymbiform, as long as achene in fruit. 雌花花被裂片离生,近等长的或侧生的稍大,全部舟状长圆形,在果期的等长于瘦果。
- Culm sheath auricles subequal, not covered by base of blade; sheath apically subtruncate. 竿箨耳廓近等长,不通过叶片基部盖住;顶部的鞘近截形。
- Lower sepal navicular, vertical, with a curved spur;spur subequal to limb, 5-6 mm, apex with a groove or 2-fid. 距近等长于冠檐,5-6毫米,先端具一具凹槽或2裂。
- Buds at culm nodes lanceolate, branches ca. 5, subequal; culm sheath blade erect. 在秆发芽披针形的节,约分开,近等长;竿箨叶片直立。
- Stem absent; panicle, similar to spike or capitulum; stamens subequal to perianth. 茎无;圆锥花序,类似于穗状花序或小头花状序;雄蕊近等长于花被。(4
- Stamens 8, subequal to petals in male flower, reduced and sterile in female flower. 雄蕊8,在雄花中与花瓣近等长,在雌花内退化和不育。
- Lower internodes of culms glabrous; culm sheath apically subtruncate; auricles subequal, usually reflexed. 低节间的无毛的秆;顶部的竿箨近截形;近等长的叶耳,通常反折。
- Longer stamens subequal to petal length, shorter ones subequal to gynoecium length. 较长的雄蕊与花瓣近等长,较短的雄蕊与雌蕊群近等长。