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- Male perianth lobe subapically long-beaked. 雄花花被裂片长喙。
- Male perianth lobes not corniculate. 雄花花被裂片不具小角状突起。
- Female perianth lobes unequal, largest lobe cymbiform, 1/2 as long as achene. 雌花花被裂片不等长,最大的裂片舟状,1/2的倍于瘦果。
- Perianth lobes 4, ovate or ovate-orbicular, 3.5 mm long. 花被裂片4,卵形或卵圆形,长3.;5毫米;
- Female perianth lobes unequal, longest one subapically corniculate. 近顶端的雌花花被裂片不等长,最长者具小角状突起。
- Female perianth lobes unequal, longest lobe with apex acute, subapically corniculate. 不等长的雌花花被裂片,最长裂片具先端锐尖,近顶端具小角状突起的。
- Female perianth lobes unequal, abaxial lobe cymbiform, longer, lateral 2 lobes triangular-ovate, much shorter. 雌花花被裂片不等长,舟状的背面裂片,长,三角状卵形的侧2裂片,非常短。
- Female perianth lobes unequal, abaxial lobe hooded, 1/2 as long as achene, lateral 2 lobes triangular-ovate, much shorter, membranous. 雌花花被裂片不等长,背面裂片盔状,1/2倍于瘦果,三角状卵形的侧2裂片,非常短,膜质。
- Female perianth lobes unequal, abaxial lobe somewhat hooded, 1/2 as long as achene, lateral 2 lobes triangular-ovate, shorter, membranous. 雌花花被裂片不等长,背面裂片有点盔状,1/2倍于瘦果,三角状卵形的侧2裂片,短,膜质。
- Female perianth lobes dimorphic, subequal, abaxial lobe hooded, 1/2 as long as achene, lateral 2 lobes triangular-ovate, membranous. 雌花花被裂片二形,近等长的,背面裂片盔状,1/2倍于瘦果,三角状卵形的侧2裂片,膜质。
- Male flowers: perianth lobes 4, connate to middle, strigose, apex acute. 雄花:花被裂片4,合生的至中部,具糙伏毛,先端锐尖。
- Female flowers: outer perianth lobes broadly ovate, inner ones elliptic. 雌花:宽卵形的外部花被裂片,内部的椭圆形。
- Perianth lobes 4-9, imbricate or rarely valvate, persistent or caducous. 花被裂片4-9,覆瓦状或者镊合状排列,宿存或者早落。
- Perianth lobes usually 4, elliptic to widely ovate, apex acute or truncate. 花被裂片通常4,椭圆形到宽卵形,先端锐尖或截形。
- 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。
- Perianth lobes 6 in two whorles, glabrous, outer ones smaller, inner ones oblong-elliptic, 7 mm long. 花被裂片6,排成2轮,无毛,大小不一,外轮较小,内轮较大,长圆状椭圆形,长7毫米;
- Herbs ?annual. Leaves 3-veined. Male perianth lobes 4, valvate; female perianth lobes 2(or 3). 草本?一年生草本叶3脉。雄花花被裂片4,镊合状;雌花花被裂片2(或3)。
- Female flowers: perianth lobes fleshy, outer ones ovate, inner ones broadly ovate. 雌花:肉质的花被裂片,卵形的外部的,宽卵形的内部的。
- Stipules intrapetiolar; male inflorescence cymose, branched; female perianth lobes equal. 托叶叶柄内;雄花序聚伞状,分枝;雌花花被裂片等长。(29
- Leaves usually crowded at stem apex; petiole 1-3 mm. Female peduncle 1-2 cm. Female perianth lobes glabrous at apex. Achene verrucose. 叶通常在茎先端密集的;叶柄1-3毫米.;雌花序梗1-2厘米。雌花花被裂片无毛的在先端。瘦果多疣