32 POLLEN. 



Convolvulacece contd. 



*Custuta Epithymum, 4. 



trifolia. WS. 32. 



BOKAGLNE^J. Many forms described by Mohl : (a) ovoid, contracted in 

 middle ; (6) with papillae ; (c) prismatic with 4 pleats ; 

 (<F) with 6 pleats; (e) with 10 or 12 pleats. Hassall describes 

 them () like Mohl ; (6) with tubes opposite to each other 

 with longitudinal fissures ; (c) with 10 tubes becoming circular ; 

 (d) four tubes ; (e} 3-lobed pyramidal. I have found them usually 

 the first form dumb-bell shaped or with 3 slits. 

 Borago officinalis. H. xv. 55. M. ii. 28. F. 8 slits. 



* orientalis, 6. F. 



*Symphytum officinalis, 7. H. xiv. 53. WS. 9. 



* caucasicum, 7. 



* Bulla. P. xiv. 19. 



*Nonnea flava, 6. 

 Pulmonaria officinalis. P. vii. 15. 



* saccharata, 6. 



* angustifolia, 8. 



* sp., 5. ^ 



* virginica, 2. 



* mollis. M. 



*Lithospermum prostratum, 2. 

 rubrocseruleum, 3. 



* arvense, 4. 



*Omphalodes verna, 2 



* linifolia. H. WS. 11. 



*Mertensia maritima, 7. 



*0nosma echioides, 9. M. v. 9. H. 



*Anchusa semperflora, 8. 



* sp., 9. 



ochroleuca. M. v. 34. 



capensis. M. v. 38. 



*Echium Lusitanicum, 12. 

 * vulgare, 2. 5. M. 



micranthum. P. vii. 13. 



fruticosum. H. M. 



orientale. M. 



*Lvcopsis arvensis, 8. 



^ MiUeri. M. v. 13. 

 *Amsinkia, sp. 6. 



*Myosotis scorpioides, 2. P. vii. 17. M. v. 32. H. 

 *0erinthe major. H. Mir. xxxi. 41. 



minor, 6. 8. 



aspera. H. 



bicolor. WS. 10. 



Cynoglossum nitidum. P. vii. 18. 



pictum, H. 



*Heliotropium peruvianum, 4. F. 



grandiflorum. P. vii. ii. M. ii. 19. 



Ehretia laevis. M. 



Ourdia Myxa. M. 

 HTDROPHTLLACE^. Hassall describes as cylindric with 3 lobes, or 



triangular. Those I have examined are in elongated triangular 



spindles, with a pore on each side. 

 Phacelia (Eutoca) viscosa. H. xv. 59. 



bipennata. H. 



multiflora. H. 



