The Scottish Naturalist. 



"5 



■ten's, tuberosa, Valcrianella Szovitsiana, vesicaria, olitoria, Fedia 

 Cornucopia, Centranihus Calcitrapa, and macrosiphon. 



Double flowers showed themselves on Valeriana dioica, globul- 

 arifolia, montana, officinalis, Phu, supina, Valerianella olitoria, 

 Fedia Cornucopice, and the species of Ce?iiranthus already 

 mentioned. 



The characteristic feature of the abnormal leaf-forms consisted, 

 in general, in the teeth of the margin in some places, like the 

 teeth of a comb, standing in series one above the other on lobes, 

 which usually project beyond the rest of the margin. In Centran- 

 thus Calcitrapa and 7nacrosiphon there often occurred the pheno- 

 menon that Masters, in his "Vegetable Teratology," p. 445, has 

 called "enation from foliar organs, — leaves." In these species of 

 Centranthus the leaf-blade constantly became enlarged and wavy, 

 so as to resemble a blade of Endive. There occurred the most 

 varied forms of doubling in the flowers. All transitions were 

 present between petalody of a few stamens and carpels, and the 

 most complete doubling, such as to render the flowers like double 

 roses in miniature. Proliferation of the flowers, double and triple 

 corollas, petalody of the sepals (calycanthemy), existence of buds 

 within the flowers, and suchlike, were often observed. These 

 various forms will be treated of in fuller detail in a longer communi- 

 cation, accompanied with plates. Occasionally there occurred 

 anomalies in the arrangement of the leaves, and displacements 

 and fasciations of the lateral branches in lesser degree. But the 

 previously mentioned abnormal leaf-forms and doubling of the 

 flowers, with the presence of buds within the flowers, were the 

 characteristic pathological conditions. In Patrinia rupestris I 

 could not bring about any remarkable modifications. 



Of CrucifercB nine species were submitted to observation, viz. 

 Biscutella auriculata, Brassica nigra, Capsella Bursapastoris, 

 Cochlearia officinalis, Eruca sativa, Lepidium sativum, Malcolmia 

 bicolor, rnaritima, and Sisymbrium Sophia. The features that 

 they presented were the occurrence of bracts, with one or more 

 flowers, in various parts of the inflorescence, petalody of some 

 stamens, and proliferous flowers. In Cochlearia, Eruca, Lepidium 

 sativum, Sisymbrium Sophia, Brassica nigra, and Capsella Bursa- 

 pastoris, the bracts developed themselves below one or more 

 flowers, according to special conditions in each case. They re- 

 sembled the stamens in form and texture, but were smaller in 



