300 ON SOME POINTS IN THE MORPHOLOGY OF THE PRIMULACE.. 
Fig. 12. Placenta bearing ovules (one of which is detached and enlarged at fig. 13), and a carpel with a 
long style and spatulate stigma. 
Fig. 14. Placenta with ovules removed to show the carpel. 
Fig. 15. Base of carpel. 
Fig. 16. Pistil of Primula prenitens, showing marginal and free central placentation, and dialysis of four 
styles: magnified. 
Figs. 17-20. Virescent Cowslips etc. 
Fig. 17. Flower of Cowslip, Primula veris. Petals virescent, stamens imperfectly developed, pistil 
dialyzed, ovules represented by thread-like funicles bearing abortive ovules. 
Fig. 18. Section of a similar flower. 
Fig. 19. Diagram showing the dialysis of the carpellary leaves and the position of the abortive ovules in 
figs. 17 and 18. 
Fig. 20. Section of normal ovary with free central placenta. 
Figs. 21, 22. Calochortus, sp. 
Figs. 21, 22. Front and back views of a petaloid stamen of Calorchortus, sp. Тһе anther is petaloid ; and 
. at the junction with the filament is a bud, three leaves of which are petaloid, unfolded, and 
spreading ; the others, smaller, are still undeveloped. (Drawn by Mr. Burbidge.) 
Figs. 23, 24. Corchorus, sp. 
Fig. 23. Flower of Corchorus with five sepals, the petals and stamens removed to show the stalked ovary. 
Fig. 24. Ovary laid open, to show leafy ovules on dorsal and ventral sutures of carpels. 
Рглте XLI. 
Figs. 1-8. Primula vulgaris with pistillodic stamens (Miss Dowson), drawn by W. G. Smith, Esq., F.L.S. 
; АП magnified. 
Fig. 1 shows a longitudinal section, with numerous hypogynous pistillodic stamens, the filaments leafy 
or petaloid, the anthers ovuliferous in the middle, and the connectives prolonged into a two- 
lobed ineurved petaloid lobe. Тһе central pistil is normal, with a long style. 
-Figs. 2-3. Sections of similar flowers. Тһе apices and sometimes the lateral lobes of the pistillodic 
stamens are prolonged into styles terminated by stigmas. 
Fig. 4. Pistillodic stamen from one of the above flowers. Filament dilated; anther open, ovuliferous in 
the centre; connective petaloid, two-lobed. 
Figs. 5—7. Similar stamens to fig. 4. 
Fig. 8. Pistillodic stamen reduced to a style with terminal spatulate stigma. 
Figs. 9-11. Cupressus Lawsoniana. 
Fig. 9. Back or outer surface of bract with anther-lobe at lower edge. 
Fig. 10. Front of the same bract, with a single ovule raised оп a short stipes. Тһе usual ovuliferous 
scale is abortive, so that the ovule appears to arise directly from the base of the bract. 
Fig. 11. Longitudinal section through the bract, to show the position of the anther and of the оуше: 
a, anther; бу, bract; о, ovule. 
