44 Rhodora [Marca 
of the series. The sepals were broadly obcordate as described in the 
other forms. The petals were narrowly oblong. Some of the stamens 
had been transformed into narrowly linear petaloid structures while 
others were anther-bearing and apparently normal. The pistil did 
not appear as in other forms described but in its place was found a 
prolification of the floral axis producing at the base five oboval, 
emarginate leaves with very short petioles and culminating at the apex 
in three leaves of three leaflets each. The leaflets are shown still 
folded together in the illustration. The condition most closely 
approaching this was found in the specimens shown in figures 12, 13, 
and 15, where the carpels have been transformed into leaves, retaining 
more or less of a cup shape, but without any evident elongation of the 
floral axis such as had occurred in the specimens last described. 
= Masters (1869) and Penzig (1890) cite instances of phyllomorphy 
of floral parts and median prolification in many kinds of flowers. 
Phyllody of the carpels and ovules is known to occur in many plants. 
Masters (’69: 259) refers to the occurrence of petalody of the stamens 
in Oxalis but apparently no case of the peculiar modifications of the 
flowers of Oxalis stricta as described in this article has ever before been 
reported. No explanation is offered for the abnormalities described. 
LITERATURE CITED IN THIS ARTICLE. 
Bartietrt, H. H. Note on Oxalis stricta var. viridiflora. RHODORA 
11: 118. 1909. ; 
Hus, Henrt. Virescence of Oxalis stricta. Rep. Mo. Bot. Gard., 18: 
99. 1907. 
Masters, M. T. Vegetable Teratology. 1869. 
Penzic,O. Pflanzen-Teratologie. 2 vols. 1890. 
EXPLANATION OF PLATE 122. 
Fig. 1. A sepal of a normal flower, X 33. Fig. 2. A sepal of an abnormal 
flower, X 33. Fig. 3. One leaflet of a foliage leaf, X 7. Fig. 4. A petal 
of a normal flower, X 33. Fig. 5. A petal of an abnormal flower of the type 
shown in fig. 15, X 36. Fig. 6. The usual form of the petals of abnormal 
flowers, X 33. Figs. 7 and 8. Abnormal forms of most frequent occur- 
rence, X 33. Fig. 9. A small abnormal flower without stamens or petals 
x 33. Figs. 10 and 11. Abnormal flowers with inflated and partly opened 
pistils, x 33. Figs. 12, 13, and 15. Forms with the carpellary leaves 
separate and outspread, the ovules replaced by small leaf-like structures, X 33. 
Figs. 14 and 16. Forms showing phyllomorphy of the carpels and median pro- 
lification, X 33. 
UNIVERSITY OF MINNESOTA. 
