268 



DESCEIPTION OF THE PLATES. 



5. A seed: magnified. Fig. 6. The fruit and fructiferous calyx; one of tlie nutlets removed: 

 magnified. Fig. 7. Inside view of a nutlet; equally magnified. Fig. 8. Transverse section of 

 a nutlet; back view. Fig. 9. Longitudinal section of the same. Fig. 10. The embiyo; equally 

 magnified. 



PLATE XLII. ERYTHEMA CHIRONIOIDES.— PaR-e 156. 



AN ENTIRE PLANT OP THE NATUKAL SIZE. 



Fig. 1. A flower; enlarged. Fig. 2. One of the divisions of the calyx; magnified. Fig. 3 

 Calyx and fruit; magnified. Fig. 4. A seed; more highly magnified. 



PLATE XLIIL ECHITES MACROSIPHON.— Page 158. 



A PLANT OF THE NATURAL SIZE. 



Fig. 1. A flower, with the narrow portion of the tube and the calyx cut away, and the upper 



* 



part laid open; enlarged. Fig. 2. A stamen; magnified. Fig. 3. The stigma, with an anther 

 adhering to it; equally magnified. Fig. 4. Longitudinal section of the ovaries; also magnified. 



w 



Fig. 5. A placenta, with the ovules attached. Fig. 6. A seed with its tuft of hairs at the 

 snmmit; magnified. 



PLATE XLIV. ACERATES TOMENTOSA^— Page 160. 



UPPER PORTION OF THE PLANT OF THE NATURAL SIZE. 



Fig. 1. A flower; enlarged. Fig. 2. One of the pollen masses suspended from a gland of 

 the stigma; considerably magnified. Fig. 3. A pod of the natural size. 



PLATE XLV. A. ASCLEPIAS NUMMULARIA.— Page 1G3. 



A PLANT OF THE NATURAL SIZE. 



Fig. 1. A flower; enlarged. 



ma 



Fig. 3. The same, laid 



open and showing the horn. Fig. 4. An anther, inside view; considerably magnified. Fig. 5- 

 A pair of pollen masses attached to a gland of the stigma; more highly magnified. Fig. 6. A 

 pod of the natural size. ' V 



PLATE XLY. B. ASCLEPIAS MACROTIS.— Page 164. 



A PLANT OF THE NATURAL SIZE. 



Fig. 1- A flower; enlarged. Fig. 2. One of the hoods; magnified. Fig. 3. The same laid 

 open. Fig. 4. An anther, seen from the inside; considerably magnified. Fig. 5. A pair of 

 pollen masses; more highly magnified. 



PLATE XLVI. ACLEISANTHES LONGIFLORA.— Page 170. 



A PART OF THE PLANT OF THE NATURAL SIZE. 



r 



Fig. 1. Upper part of the perianth laid open. Fig. 2, Lower portion of the same. Fig. 3 

 A stamen; magnified. Fig. 4. The ovary laid open; magnified. Fig. 5. The fruit; enlarged 



■ 



**lDCorrectIy named Asclepias in the plate. 



h 



i 



i 



