OVULES. 367 
four outer segments to the perianth, four petals, of 
which two were lip-lke, four stamens, three of which 
were rudimentary, and an ovary with four parietal 
placentze.’ 
The following list will serve to show in what plants 
this general augmentation of parts has been observed 
most frequently : 
Ranunculus. Sambucus ! 
Clematis ! *Primula ! 
- Delphinium. Anagallis ! 
Brassica ! Lycium. 
Ruta. Solanum. 
Acer ! Symphytum. 
Prunus ! Syringa ! 
Rosa ! Linaria. 
Rubus. Chenopodium. 
Philadelphus ! *Paris ! 
Chrysosplenium Convallaria ! 
Umbellifere, sp. pl. ! Allium. 
*Fuchsia ! *Tnilium ! 
-Ginothera. *Tulipa ! 
Adoxa. Ornithogalum. 
Bryonia. *Gagea ! 
Cucumis ! Tradescantia ! 
Campanula! Orchidezx, sp. pl. ! 
Increased number of ovules or seeds——'I'his appears not to 
be of very frequent occurrence, at least in those plants 
where the number of these organs is normally small; 
where, as in Primula, the ovules and seeds are pro- 
duced in large quantities, it is not practicable to ascer- 
tain whether the number be augmented or not in any 
particular case. Very probably, the attachment or 
source of origin of the ovules determines, in some mea- 
sure, their number. Thus, in the case of marginal 
placentation the number must be limited by the narrow 
space from which they proceed, whereas in parietal 
and free central placentation the ovules are generally 
numerous. In the latter case, however, it will be 
remembered that solitary ovules are not rare. An 
increased number of ovules is generally remarked in 
conjunction with some other change, such as a folia- 
* * Linnea,’ 1842, p. 389, e. ie. 
