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A TEXTBOOK OF THEORETICAL BOTANY 



B 



Fig. 1 201. — Hmcort/iia reimmrcitii. Septal nectaries. A, Longi- 

 tudinal section of ovary with nectary slit shown on left, open- 

 ing at apex of ovary. B, Transverse section showing nectary 

 slits in septa. (After Broivn.) 



Stylar Type. This is not clearly distinguishable from the preceding, 

 but the base of the style is included in the nectary. 



Examples: i. In Umbelliferae the nectary takes the 



form of an enlarged cushion on the 

 top of the inferior ovary and includes 

 the base of the style, the so-called 

 stylopodium, 



2. A similar structure is found in Saxi- 

 fragaceae with inferior or semi-inferior 

 ovaries and in Cornus. 



Staminal Type. Nectar is secreted by or in close association with the 

 stamens. 

 {a) Nectar is secreted by the bases of the stamen filaments. 



Example : From the united stamens in many Papilionaceae. 

 {h) Nectar is secreted in grooves on the filaments. 



Examples: i. The groove is on the abaxial side in 



Vacciniiim and Tulipa. 

 2. The groove is on the adaxial side in 

 Atragene. 

 (c) Nectar is secreted by processes at the base of the stamens. 



Examples: i. The nectaries form swellings at the base 



of the stamens in Alsinoideae and in 

 Geraniaceae. 



