252, PHYLLODY 
the stamens and pistils being abortive. In Ranunculus 
the leaves that appear in the place of the petals have 
no scale at their base, and in Tropaolum the calyx (or 
receptacle) is free from the usual spur. 
The absolute frequency of this occurrence seems to 
be greatest in those flowers which are normally poly- 
petalous. The petals of these flowers, as a general 
rule, are more like the leaf-sheaths than the leaf-blades 
as to their venation, hence it would seem that the phyl- 
lomorphic condition in these petals is a manifestation of 
a greater degree of organizing force than that which 
occurs in those cases where the petals are normally 
present in the form of contracted blades or lamine. 
(See the remarks in the preceding section.) 
Frondescence of the petals has been observed most 
frequently in the following cases; some, perhaps, were 
cases merely of virescence, q. v.; see also under 
Chloranthy, Prolification. 
Ranunculus repens ! 
Delphinium Ajacis. 
crassicaule. 
Aquilegia vulgaris. 
Actza spicata. 
*Brassica oleracea ! 
Diplotaxis muralis. 
Hesperis matronalis. 
Thlaspi bursa pastoris. 
Sisymbrium tenuifolium. 
Turritis glabra. 
Raphanus sativus. 
Peltaria alliacea. 
Alyssum incanum. 
Erysimum Barbarea. 
officinale ! 
cheiranthoides. 
Cheiranthus Cheiri. 
*Dictamnus Fraxinella! 
Lychnis sylvestris. 
dioica! 
Alsine media. 
Cerastium vulgatum ! 
triviale. 
Reseda lutea. 
Phyteuma. 
Malva sylvestris. 
*Tropeolum majus ! 
Geranium, sp.! 
Triumfetta, sp.! 
Epiulobium hirsutum ! 
(nothera striata. 
Rubus, sp. 
*Rosa, var. cult. ! 
*Trifolium repens ! 
Spirea oblongifolia. 
Amygdalus communis. 
*Rosa! 
Cerasus vulgaris ! 
Persica vulgaris ! 
' Potentilla nepalensis. 
Geum rivale. 
Daucus Carota! 
Heracleum Sphondylium. 
Torilis Anthriscus. 
Eehinophora maritima. 
Campanula rapunculoides. 
glomerata. 
Phyteuma spicatum. 
Calendula officinalis. 
Cirsium tricephalodes. 
Senecio vulgaris. 
Seabiosa columbaria. 
agrestis. 
Lonicera xylosteum. 
Periclymenum. 
