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1 期                  朱永等: 紫纹兜兰的花形态和双雄蕊花药发育及分类学意义                                            1 0 5



































































             1. 花形态ꎮ 2-4. 成熟合蕊柱的背面(2)ꎬ侧面(3)ꎬ正面(4)ꎬ示柱状合蕊柱、肉质盾型柱头、呈半月状的扁平退化雄蕊和两枚可
             育雄蕊ꎮ 5ꎬ6. 早期合蕊柱的极面(5)和侧面(6)ꎬ示柱头表面 3 浅裂ꎬ可育雄蕊由一对顶部浅裂( 箭头所指) 的侧生药室组成ꎮ
             7. 发育后期成熟花药ꎬ示一对花药室的开裂(箭头所指)ꎮ 8. 成熟花药开裂ꎬ花药壁降解ꎬ露出光滑的黏性花粉团ꎮ a. 花药ꎻ
             aw. 花药壁ꎻ d. 中萼片ꎻ f. 花丝ꎻ g. 合蕊柱ꎻ l. 唇瓣ꎻ p. 花瓣ꎻ sp. 黏性花粉团ꎻ sta. 退化雄蕊ꎻ sti. 柱头ꎻ t. 花药室ꎮ
             1. Flower. 2-4. An ripened gynostemium in back (2)ꎬ side (3)ꎬ and front (4) viewsꎬ indicating a disk ̄like gynostemiumꎬ a fleshy shield ̄like
             stigmaꎬ flat vestigial stamen with semilunar shape and two fertile stamens. 5ꎬ 6. An undeveloped gynostemium in top (5) and side (6) viewsꎬ
             indicating 3 ̄lobed stigma and anther consisting of two lateral thecae with a longitudinally shallow groove (arrow indicated). 7. A ripened anther
             with a slit on each theca (arrow indicated). 8. A ripened anther with remaining of anther wall and a mass of sticky pollens exposed. a. Antherꎻ
             aw. Anther wallꎻ d. Dorsal sepalꎻ f. Filamentꎻ g. Gynostemiumꎻ l. Lipꎻ p. Petalꎻ sp. Sticky pollensꎻ sta. Staminodeꎻ sti. Stigmaꎻ t. Theca.
                                              图版 Ⅰ  紫纹兜兰的花形态特征
                                      PlateⅠ  Floral morphology in Paphiopedilum purpuratum
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