Compound corymb (mountain ash). 
Umbel, simple and compound. 
Spike (mullein, plantain). 
Head, or capitulum. 
Spadix, surrounded by a spathe. 
© Catkin, or ament. 
Gee 
Anthesis of corymbose flower cluster is centripetal. 
Flower clusters with determinate inflorescence. 
ee eyInie, 
Simple cymes as in basswood. 
Compound cymes as in dogwood, hydrangea, etc. 
2. Helicoid cyme, (forget-me-not). 
3. scorpioid cyme. 
4. Forking cyme (chickweed). 
Anthesis of cymose inflorescence is centrifugal. 
VII POLLINATION 
Self pollination, or close pollination. 
Cross pollination. 
1. Wind pollination (anemophilous flowers). 
2. Pollination by insects. 
(Ci iNectan: 
(2) Flower colors. 
(2), Guides,” 
Dichogamous flowers (bluet, primrose). 
Proterandry and proterogeny (Campanula, skunk’s cabbage, 
ECs): : 
Dioecious flowers. 
Mechanisms for throwing pollen on insects. 
Kalmia. 
Cytisus. 
Certain orchids (Catasetum saccatum). 
Pollinium (disc, pedicel, pollen masses). 
“Antennae” 
Stigmatic chamber. 
Labellum. 
Pollination of orchids, Cypripedium, Epipactis, etc. 
Pollination of the canna. 
Pollination of Yucca by Pronuba. 
Ve 
