Table 1.

Stages of flower development in Cedrela and Toona, listing the landmark events that define the beginning of each stage and the respective mean size of the floral meristem or flower bud

		Mean size of the flower meristem or flower bud ± s.d. (mm)
Stage	Landmark event at beginningof stage	Cedrela*	Toona
1	Flower meristem is detectable on the surface of the inflorescence meristem	0·05 ± 0·01	0·04 ± 0·01
2	Flower meristem is individualized	0·12 ± 0·02	0·10 ± 0·03
3	Sepal primordia arise	0·15 ± 0·02	0·25 ± 0·04
4	Al sepal primordia formed	0·30 ± 0·04	0·35 ± 0·06
5	Petal primordia arise	0·36 ± 0·08	0·40 ± 0·08
6	Stamen primordia arise	0·41 ± 0·08	0·43 ± 0·09
7	Carpel primordia arise	0·50 ± 0·09	0·48 ± 0·08
8	Locules are formed in stamen primordia	1·00 ± 0·12	0·50 ± 0·06
9	Petal primordia stalked at the base	1·53 ± 0·18	0·55 ± 0·08
10	Ovule primordia are initiated	1·74 ± 0·25	0·75 ± 0·09
11	Stigmatic papillae appear	1·85 ± 0·29	0·90 ± 0·08
12	Anthesis	2·50 ± 0·31	2·00 ± 0·30

* The data presented are a raw mean between measurements taken from C. fissilis and C. odorata (ten flowers each).