246 



On some remarkable Plants in the 



number in particular, will probably appear formidable ob- 

 jections. 



It abounds with spiral vessels. Curious cellular bodies 

 are to be found along the margins of the young leaves. The 

 odour of the flowers resembles that of Roydsia suaveolens, 

 and Heliotrope. 



EXPLANATION OF PLATE XIIL 



Plagiopteron fragrans. 



1. Portion of a flowering branch, natural size. 



2. Young alabastrum. 



3. Alabastrum just opening. 



4. Flower. 



.5. Two Stamina. 



6. Anther before dehiscence. 



7. Ditto after. 



8. Pollen. 



9. Ovarium laid open, disclosing the ovula of one cell. 



10. Ditto, a double longitudinal section. 



11. Ovarium, double transverse section. 



12. Ovulum. 



13. Fruit. 



14. Ditto, one cell opened, shewing the two abortive 



ovula at the base. 

 15 Stellate hair. 



SIPHONODON. 



Char. Gen. — Flos hermaphroditus, semi-inferus, sesti- 

 vatione imbricativa. Calyx 5-sepalus. Corolla 5-petala. 

 Stamina 5, sepalis opposita, antherae reniformi-cordatse. 

 Ovarium plurilocellatum, e carpellis 5 sursum in canalem 

 (apice denticulatum) connatis, formatum. Stigma styliforme, 

 in canalem, apice discoideo excepto, reconditum. Ovula in 

 loculis solitaria, obliqua vel pendula. Fructus drupaceus, 

 pyrenae osseae tot quot locelli ovarii, monospermae. Semina 

 pyrenarum superiorum erecta, inferiorum pendula. 



