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- Involucral bract petiole 1--2 mm wide; leaf blade central leaflet 3-lobed; sepals ca. 5, pilose or subglabrous, with or without vein anastomoses. 总苞片叶柄1--2毫米宽；叶片中心的小叶3浅裂；萼片约的5，具柔毛或近无毛，有或没有网结脉。(15
- Leaf petiole more than 2 mm wide; involucral bract blade undivided or sometimes 3-lobed; cyme 1-flowered; sepals glabrous or sparsely puberulent; staminodes sometimes present. 叶柄超过2毫米宽；总苞片不裂或有时3浅裂；聚伞花序1花；萼片无毛的或疏生微柔毛；退化雄蕊有时宿存。(50
- Rhizome both long and short. Leaf petiole and scape hirsute. Involucral bract blade ca. 3 cm. Cyme 4- or 5-flowered. Sepals white to pink, 5--6 mm. Ovary base narrowed. Stigma globose. 根状茎长和短。叶柄和花葶具粗毛。总苞片叶片大约3厘米。聚伞花序4或5花。萼片白色到粉红色，5-6毫米。子房基部狭窄。柱头球状。
- Rhizome branched, not tuberous, short; involucral bracts 3-parted or 3-lobed. 根状茎分枝，不块茎状，短；总苞片3深裂或者3浅裂。(27
- involucral bract leaflike;heads many, hemispheric, many flowered. 总苞片叶状头状花序很多，半球形，多花的。
- Branchlets coarsely hairy, glabrescent; petiole ca. 1 cm; involucral bracts broadly ovate. 小枝，叶柄，叶片，并且开花通常不偷偷走近腺，腺的具短柄的很少难以觉察
- Inflorescences capitate cymes, 3-7-flowered, subtended by a whorl of 5 or 6 prominent involucral bracts. 头状的花序聚伞花序，3-7花，在以前轮生的5或6突出总苞片。
- Hairs stellate; involucral bracts spatulate-lanceolate or obovate; calyx without accessory teeth; fruit glabrous. 毛星状；总苞片匙形披针形的或倒卵形；没有附件齿的花萼；果无毛。(3
- Inflorescences pedunculate, capitate cymes, subtended by a whorl of 6 prominent involucral bracts. 有花序梗的花序，头状聚伞花序，在轮以前被包着突出总苞片。
- Involucral bracts sheathlike, bladeless, subequal, more than 5 mm, with several to numerous 1-flowered cymes. 总苞片鞘状，无叶片，近等长，超过5毫米，带有对许多1花的聚伞花序的几。(7
- Involucral bracts borne opposite leaves, with 1.5--4 cm long stalk, cordate, folded, 1.2--2.5 cm, often hirsute-ciliate, apex acute. 总苞片与叶对生，具1.;5-4厘米长柄，心形，折叠，1
- Leaf blade glabrous or with sparse short pubescence. Figs oblong to pillow-shaped, glabrous; involucral bracts orbicular. Fl. early summer. 叶片无毛的或具稀的短柔毛。榕果长圆形或枕形，无毛；总苞片圆形。花期初夏。
- Roots fusiform thickened; sheathlike involucral bracts dense, at least apical ones connate; capsule with several seeds per valve. 纺锤形根加厚；鞘状总苞片浓，至少顶端的合生；每裂片的蒴果具数个种子。(8
- Basal leaves not rosulate; leaves, involucral bracts, and bracts hirsute or pubescent, rarely sparsely arachnoid; roots much thinner. 基生叶不莲座状；叶，总苞片，和苞片具粗毛或短柔毛，具蛛丝状毛的疏生的很少；根薄得多。(3
- Flower-heads narrowly campanulate, 16-19 mm long, ca. 6 mm across, usually 2-4 in terminal clusters; peduncle 2-8 mm; involucral bracts ca. in 7 series, ribbed on abaxial surface, apex spiny. 叶互生，卵形，长3-5.;5厘米，宽2-4厘米，先端短尖，基部近截形，边缘具疏齿，两面被长柔毛，具基出脉3条；叶柄长3-5毫米。
- Flowerheads narrowly campanulate, 1619 mm long, ca. 6 mm across, usually 24 in terminal clusters; peduncle 28 mm; involucral bracts ca. in 7 series, ribbed on abaxial surface, apex spiny. 叶互生，卵形，长35.;5厘米，宽24厘米，先端短尖，基部近截形，边缘具疏齿，两面被长柔毛，具基出脉3条；叶柄长35毫米。
- The number and shape of pinnatifid-lobes of leaflets, morphology of involucral bracts, and color of flowers are shown to be the most useful characters for separating Taiwanese species. 本研究显示，小叶的羽状裂瓣数目的形状、緫苞片的形态、以及花的颜色，提供台湾产种类相当重要之分类依据。
- Rhizome long or short; leaf blade ternate or 3-sect, petiole narrow or basally sheathing; involucral bracts sessile; pistils and achenes with distinct or obscure style and small or capitate stigma. 根状茎长或短；叶片三出或3裂，叶柄狭窄或基部具鞘；总苞片无柄；雌蕊和瘦果具明显或不明显花柱和小的或头状柱头。(4
- Rhizome long and thin or shortly nodulose; leaf blade ternate, petiole narrow; involucral bracts petiolate; pistils and achenes with distinct style and small, usually linear stigma. 根状茎长和薄的或具短的小节；三出的叶片，狭窄的叶柄；总苞片具叶柄；雌蕊和瘦果具明显花柱和小，通常线形柱头。(8
- involucral bracts ovate, persistent. 总苞片卵形，宿存。
