60 Addisonia 



doubtless given in allusion to the sound of the seeds rattling in the 

 pods on the dry fruit-stalks. 



Like many genera of the figwort family, Alonsoa shows an in- 

 teresting special modification of a primitively regular five-lobed 

 corolla and five-stamcned flower. The splitting between the 

 posterior lobes, with the great reduction of these, and the develop- 

 ment of the anterior half of the corolla accentuate a tendency 

 frequent through the family. 



This plant may be grown in loam soil in greenhouses. Its 

 weed-like character as a native is evidence of easy culture. Our 

 drawing has been made from a plant grown at the Garden, the seed 

 having been collected by myself at Bogota, Colombia, September 22, 

 1917. 



Francis W. Penneli.. 



Explanation of Plate. Fig. 1. — Flowering stem. Fig. 2. — Corolla, X 2. 

 Fig. 3. — Fruit, X 3. Fig. 4. — Fruit, showing dehiscence, X 3. Fig. 5. — Lower 

 stem-leaf. 



