393 



Fig. 4. Stotnata of Strobilanthes Sabiniana. They are very large, and crowded 

 together in an irregular manner. 



Fig. 5. Ditto of Croton variegatum : this is an instance of an epidermis with 

 sinuous lines. The orifice of each stoma is closed up with brownish 

 matter. 



Fig. 6. A stoma of Canna iridiflora. 



Fig. 7. A cavity beneath the epidermis, in the parenchyma of Begonia sanguinea 

 seen from the inside, so that the epidermis is farthest from the eye. It is 

 divided by sub-cylindrical cellules into five spaces, in each of which there 

 lies a stoma. 



Fig. 8. One of the stomata of the same, more magnified, and showing that the 

 medial line does not touch either end, and that the cavity of the stoma is 

 filled with granular matter. 



Fig. 9. Stomata of the under side of the leaf of Caladium esculentum, with a 

 portion of epidermis. These appear to be somewhat angular cellules, 

 occupying the. centre of every area of the epidermis. The stoma 

 consists of an oval space, in the centre of which is a narrow cleft, with 

 a border distinctly coloured orange or brownish, and having no com- 

 munication with the circumference ; the space between the cleft and the 

 latter filled with a pale green granular substance. The cleft is sometimes 

 seen closed, as at a, and then there is scarcely any appearance of a 

 border. 



Fig. 10. Epidermis and stomata of Yucca gloriosa ; the latter lie in square 

 areolse, and consist of two parallelograms lying parallel with each other. 

 Small spheroidal bodies, having a luminous appearance under the 

 microscope, stick here and there to the inside of the epidermis. 



Fig. 11. Stomata of Limnocharis Plumieri. These also lie in square areolse, 

 but they have the ordinary structure : they are found in different degrees 

 of openness, or even quite closed, upon a small piece of the same specimen. 



Fig. 12. Stamen of Lemna trisulca : anther bursting vertically. 



Fig. 1 3. Stamen of Polygonum Convolvulus : a, seen in front ; b, from behind ; 

 c, the connectivum of the anther. 



Fig. 14. Stamen of Correea alba : a, seen in front ; 6, from behind. 



Fig. 15. Stamen of Stachys sylvatica : a, filament ; 6, connectivum ; c, anther, 

 its lobes separated at the base by the connectivum. 



Fly. 16. Anther of Alchemilla arvensis ; one-celled, and bursting transversely. 



Fig. 17. Stamen of Scrophularia chrysanthemifolia : a, part of the filament, and 

 the anther, which is one-celled, after bursting ; 6, the same, before the 

 dehiscence of the anther. 



Fig. 18. Anther of Lamium album ; its lobes, as in fig. 16., separated at their 

 base by the large connectivum. 



Fig. 1 9. Stamen of a species of Zygophyllum : a, the anther ; 6, the filament ; 

 c, the scale to which the filament adheres. 



Fig. 20. The one-celled anther and filament of Callitriche. 



Fig. 21. The stamen of Sparganium ramosum. 



Fig. 22. The stamen of Vaccinium amoonum : a, the pores by which the anther 

 bursts. 



Fig. 23. The anther of Begonia Evansiana : a, the oblique immersed cells ; 

 b, the connectivum. 



