Invasive SpeciesBeach rose

Rosa rugosa
South Waterboro
ID Confirmed
Quality checked by pparent
Peer reviewed by pparent
Field Notes
This is my first investigation where I am completely alone. I have submitted with a group twice and by myself for a class project, but this is my first home investigation. I live in Waterboro, and I have Beach Rose in the expanse of my yard. I have been tracking their progress since April, and watching them bloom, flower, and grow. I first ventured out on April 23, 2011, and it was misting slightly. Small green buds were starting to appear with a light pink shell encasing their base. Most buds were a mere 1/2 a centimeter tall, but some were up to 1 centimeter. Blackened, shriveled seed-holders were at the tips of some of the plants, and were 2 1/2 centimeters around. I estimated they held about 50 seeds each. The tallest stalk of the plant was 166 centimeters tall, and the thorns dotting each one were 3/4 of a centimeter each. I next went out on May 7 to check on its progress and saw that the buds had opened a little bit, revealing approximately 10 leaves bunched up inside. They still had a small red shell 1/2 centimeter in length at their base, however. Also, the leaves were bright green and had veins that were visible for up to 213 cm away (about 7 ft). The leaves had a shiny, sheen look to them that reflected the sun (it was also shiny out of the sun), and the thorns remained 3/4 of a centimeter each. The tallest stalk was now 170 centimeters high, but the base was now 330 centimeters around (before it was about 275 centimeters). I finally got out again on June 3, to take pictures of the new flowers. This time it was sunny, and I snapped a few photos then returned inside, this time satisfied I had adequate evidence to submit.
A sketch of our study site.
Supporting Evidence
Photo of my evidence.
The first reason I knew this plant was Beach Rose was because it had 4 centimeter long oval leaves that were toothed. The leaves were in a compound pinnate arrangement, and had a sort-of glossy sheen to them that shone in and out of the sun. The leaves were bright green on the top and a softer, pastel green on the underside. The veins were clearly visible on the top and bottom, as though they were etched into the plant. The leaves, originally buds, opened up in leaflets varying from five in a cluster to eight or nine in a cluster, which matched perfectly with the information on the Vital Signs species card.
Photo of my evidence.
The second thing that led me to believe this plant was in fact Beach Rose was its thorns. Lining every branch were thorns that stuck up 1/2 a centimeter off the brown-colored stems. The thorns were straight and varied in size. Some were even 1 centimeter tall! Off some of the stems were small pink buds encased in green leaves. These opened up to become small pink flowers.
Photo of my evidence.
These pink flowers were the final piece of evidence that convinced me of this plant's being Beach Rose. The flowers, light pink in color, were about 8 centimeters across and 6 centimeters high. The center consisted of small yellow strings about 1/2 a centimeter tall, and little particles of pollen cling to them. The bees love these plants, and often times small buzzing sounds can be heard. There is also a small ring of faint whiteness around the yellow pollen center. These three pieces of evidence convinced me thoroughly that this plant was indeed Beach Rose, of "Rosa Rugosa".
Species Observation: Species Looked For
Did you find it?: 
I think I found it
Scientific name:
Rosa rugosa
Common name:
Beach rose
Count of individuals: 
3/4 - Completely covered
Flower (plants)
Sampling method: 
Just looking around
Photo of our sampling method.
Place Studied
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Map this species
N 43.536008 °
W -70.700781 °
Observation Site Information
A photo of our study site.
Upland - Forest
Trip Information
Woodland Drive Investigation
Trip date: 
Sat, 2011-04-23 22:46
Town or city: 
South Waterboro
Type of investigation: 
Species and Habitat Survey
Habitat Observations
Species diversity: 
20 different species
Evidence of vectors: 
Paved road
Tree canopy cover: 
Open to 1/4 covered
Soil moisture: 


This observation is off-the-charts-impressive. Your eye for the key identifying characteristics, change over time, and how this plant is interacting with its environment make you a natural scientist. The voice that comes through in your writing had me hooked from the very beginning!

So did you like "going it alone" or working in a team better?

Thank you very much for your wonderful comments, and I would have to say maybe I like flying solo when it comes to submitting. I feel like I can get things done a lot quicker and I can go at my own pace (which I have to say is pretty quick). Also, I can go out and collect evidence when I want to, without having to consult my group before every move. I like both, but I think that working on my own suits me better and has more advantages.

I forgot to put in my investigation that my camera model was a "Rebel XT".