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- Perianth segment appendage winglike, veined. 花被片附属物翅状，脉。
- Perianth segment 1, orbicular, apex irregularly lacerate. 花被片1，球状，顶不规则撕裂。
- Portion of perianth segment below wing not enlarged, hardened, or woody in fruit. 花被片在不扩大的翅下面的部分，使变硬，木质的或在果期。
- Perianth segments 4, in 2 whorls, petaloid, free. 花被片4，2轮，花瓣状，离生。
- Appendage borne on distal portion of perianth segment; seed vertical or oblique. 花被片的附属物生于上部部分；种子垂直或偏斜。
- Perianth segments 3-5, narrowly obovate to spatulate. 花被片3-5，狭倒卵形到匙形。
- Perianth segments 6, in 2 whorls, papery to hyaline. 花被片6，2轮，纸质到透明。
- Outer perianth segments pale violet; inner segments yellow. 外部花被片浅紫色；内部裂片黄。
- Perianth segments proximally connate to form a tube, distally free. 花被片下部合生成筒部，上部离生。
- Filaments 2--2.5 mm, connate to middle and adnate to perianth segments, entire. 花丝2-2.;5毫米，合生的至中部和贴生于花被片，全缘。
- Perianth segments 6, ascending or spreading, free to slightly connate at base. 花梗有节花被片6，上升或开展，离生到稍合生在基部。
- Perianth segments 6, in 2 whorls, free or connate to form a short tube, with or without a corona. 花被片6，2轮，离生或者合生成短管，有或无副花冠。
- Filaments subulate, equal, ca. 1/2 as long as perianth segments, connate at base and adnate to perianth segments. 花丝钻形，等长，约1/2的倍于花被片，在基部合生和贴生于花被片。
- Perianth segments connate, hardening and forming an urceolate body in fruit; anther appendage inflated and bladderlike. 花被片合生，硬化和在果期形成一个瓶形的身体；花药附属物膨大和囊状。
- Perianth segments 6, in 2 whorls, petaloid, free or basally connate into a tube. 花被片6，2轮，瓣状，免费或者基部合生成一管。
- Filaments subulate, slightly longer than perianth segments, connate at base and adnate to perianth segments. 花丝钻形，稍长于花被片，在基部合生和贴生于花被片。
- Perianth segments distinctly veined; stigmas 3-5; seed extremely convex, scarcely pitted. 清楚的花被片脉；柱头3-5；种子极其凸，几乎不具洼点。(9
- Perianth segments 5, oblong or oblong-lanceolate, papery, 1-veined, abaxially with a recurved, winglike appendage. 花被片5，长圆形或长圆状披针形，似纸，1脉，背面具一下弯，翅状附属物。
- Flowers pedicellate; perianth segments membranous, spreading-rotate at anthesis; filaments reflexed in bud. 花有花梗；膜的花被片，传播轮流在花期；反折的花丝在芽中。
