I have been trying to find this plant's name since last summer. It has narrow simple leaves, 2 opposite and no lobe. Each stem will have 2 clusters of flowers. The flower is white with 5 petals that have a double tip. On Pender Island
I wonder if you have 2 different plants. 1. Left. Looks like Stellaria sp. 5 petals divided. Opposite leaves...which look glossy. Right Cannot see the detail clearly enough. 2. Looks different. Flowers. Leaf shape..not shiny. etc. Cannot see the detail clearly enough. Stem..one looks smooth...other hairy..or my imagination?
I think both are the same plant - one was in a more shaded spot - but thanks to your information , I looked up Stellaria humifusa in my BC plant book. Close but the leaves are two glossy. That led to a better search and I found Cerastium glomeratum (sticky chickweed). I think the flower, leaf and stem are all a match.
Thanks . After looking images of these , and doing a search for the fact the flowers are in clusters, the image for cerastium glomeratum popped up and it looks like a match.
Cestium glomeratum common name sticky mouse ear...... Sorry definitely not a match for pic 1 Left. Note ..The Cestium has very hairy stem..your plant is very smooth... Shape of leaves...different Plant is very sticky. http://science.halleyhosting.com/nature/basin/5petal/pink/cerast/glomeratum/glomeratum1b.jpg Sticky Mouse-ear - Cerastium glomeratum | NatureSpot Cerastium glomeratum Trying to id these small white flowers is not easy. I still believe you have 2 different plants!
The leaf on the plant on the left is slightly more elliptical but the stem does have some hair. Often the flowers are not open. I will try to find one with flowers open again and take a better photo.
I have looked at some more websites and I think you are correct. I think the plant with the open flower is Cerastium fontanum - common mouse ear chickweed. And the other one is Cerastium glomeratum. Thanks!