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Phenakospermum

Vegetative and reproductive morphology of Phenakospermum guyannense.
Figure 1. Vegetative habit of single shoot with distichous leaf arrangement. Figure 2. Massive terminal inflorescence with non-overlapping bracts, some with protruding post-anthesis flowers (towards apex) and others with immature fruits (at base); note position of phyllostomid bat probing open flower for nectar. Figure 3. Cut-away view of inflorescence bract with floral bracts removed to show open flower after anthesis. Figure 4. Single flower at anthesis before visitation by pollinator; note three sepals, single trip petal, and two fused petals enclosing stamens with stigma protruding from apex. Figure 5. Cut-away of entire post-anthesis flower with abaxial sepal and three of five anthers removed; note the displaced trip petal (a), two fused petals with anthers attached at apex (b), flaccid style (c), nectar chamber formed by the over-lapping bases of the three petals (d), and solid perianth tube with pollen tube canal (e), leading to ovary (f). Figure 6. Single inflorescence bract with open fruits. Figure 7. Mature, dehisched capsular fruit showing multiple rows of seeds.

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