26 



MADRONO 



[Vol. 1, 



FIELD OBSERVATIONS. 



New Station Reported for Bellardia trixago (Lousewort). — 

 In April, 1914, this plant was flowering in abundance on a small 

 plot of land in East Oakland, where the soil had been disturbed a 

 few years ago by deep cutting of street grades. It was called to the 

 attention of the Botanical Society through specimens collected by 

 school girls. The plant was not observed elsewhere in the vicinity. 

 — D. W. de Veer. 



Utilization of a New Host by Aphyllon uniflorum (Can- 

 cer-root). — In April while watering some Sedum spathulifolium 

 that had been transplanted to my garden, I found some dark-blue 

 flowers growing among them. Examination of the pale leafless 

 plants showed them to be Aphyllon uniflorum (Fig. 11), parasitic 

 upon the roots of the Sedum. After this observation I went to the 

 cliff on the side of Twin Peaks, from where the Sedum had been pro- 

 cured. There I found the Aphyllon associated only with Sedum, both 

 on the top of the cliff and on the shaded side. In this connection I 

 might add that only a few weeks before I had found Aphyllon tube- 

 rosum growing on Manzanita roots on Mount Tamalpais. — M. Alice 

 Kins'. 



Fig. 11. 



a. Aphyllon uniflorum 



c. Corolla and stamens 



d. Pistil 



e. Capsule 



b. Sedum spathulifolium 



White Oenothera ovata (Sun-cups). — On April 8, 1914, six 

 plants of Oenothera ovata bearing white flowers were found on the 



