Photos / Sounds
What
Smooth Beggarticks (Bidens laevis)Observer
rwainsleyDescription
Inside Brown's Island along canal banks just above water line. Picture this suggests this is but marigolds (Biden's laevis). Match seems good.
Photos / Sounds
What
Twinberry Honeysuckle (Lonicera involucrata)Observer
rwainsleyDescription
Growing on north shores of main East-west canal. Picture this suggests Twin-berry (Lonicera involucrata), but given their picture, hard to tell if this is a good match up)
Photos / Sounds
What
Hedge Bindweed (Calystegia sepium)Observer
rwainsleyDescription
5 petal white flower. Alternate pinnate leaves. Flower looks a little like Biglow's tobacco except the flower is much shorter lacking the long tube at the base of the petals. The sepals do not have noticeable hairs and neither does the stem. The plant is a vine that wraps the stem around other plants
Photos / Sounds
What
Knotweeds, Smartweeds, and Waterpeppers (Genus Persicaria)Observer
rwainsleyDescription
12 white flowers clustered on at end of the stem, flowers are small 1/8 inch long, white petals appear fused forming a cup like structure. Sepals are green and small. count of petals is difficult -- maybe 3 petals and 3 stamens (maybe 4)?
stem < 1/8 inch diameter about 1 inch between leaf nodes towards base of stem. Stem has very short stiff hairs that make stem feel rough. Leaves towards the base of the stem are 2 inches long and 1/2 inch wide about 1/3 of length from the petiole towards the end of the leaf
Photos / Sounds
What
Swamp Smartweed (Persicaria hydropiperoides)Observer
rwainsleyDescription
about a dozen small 5 petal flowers at the end of stems - the panicle is branched. Leaves are pinnate and alternate
Photos / Sounds
What
Seep Monkeyflower (Erythranthe guttata)Observer
rwainsleyDescription
Yellow monkey flower located about the igh tide level along the canal shores. Also bloomed in Spring, but did not bloom from September until late October.
Photos / Sounds
What
Alligatorweed (Alternanthera philoxeroides)Observer
rwainsleyDescription
Floating aquatic plant, small white flowers in clusters at the end of stems.
Photos / Sounds
What
Grasses (Family Poaceae)Observer
rwainsleyDescription
Tall ree with feather like bloom at the end of stems
Photos / Sounds
What
Floating Marsh Pennywort (Hydrocotyle ranunculoides)Observer
rwainsleyDescription
Floating aquatic plants with geranium like leaves. Has not bloomed since mid summer. I recall a yellow flower but I never spent time looking at the flower. This plant is not migrating westward in large masses like water hyacinth and Mexican water fern are now doing. Floating masses seem to grow into the shore anchoring them unlike water hyacinth and Mexican water fern which are foating freely.
Photos / Sounds
What
Marsh Fleabane (Pluchea odorata)Observer
rwainsleyDescription
Seems to be a composit. Pink with 6 flowerets or maybe just a very tight flower with 6 stamens?
Photos / Sounds
What
Tribe FuireneaeObserver
rwainsleyDescription
Similar to California bulrush except flowers are not at the end of the stalk. Together these 2 spp are the dominant shore vegetation on the entire island
Photos / Sounds
What
California Bulrush (Schoenoplectus californicus)Observer
rwainsleyDescription
Dominant plant on any shore anywhere on Browns Island
Photos / Sounds
What
Armenian Blackberry (Rubus armeniacus)Observer
rwainsleyDescription
Black berry vine. Genus is ok. species maybe ok
Photos / Sounds
What
California Wild Rose (Rosa californica)Observer
rwainsleyDescription
Rose that grows slightly above high tide level on exposed shores. Grows in dense clusters. Similar to black berry bushes distribution often found nearby.
Photos / Sounds
What
Beethistle (Eryngium articulatum)Observer
rwainsleyDescription
composite with purple petals, sepals hard, green, long, pointed, seriated. Leaves opposite
Photos / Sounds
What
Tribe ChironieaeObserver
rwainsleyDescription
Shore of canal inside Browns Island. 5 purple petals with white at their base. Flowers are small 1/4 inch across. genus Verbena likely.
Photos / Sounds
What
Azolla (Genus Azolla)Observer
rwainsleyDescription
This plant is very small aquatic floating on the surface. Each plant has 2 roots extending down into the water about 3/4 inch long and very straight and thin and flexible. The “leaf” starts out green then turns brown which may be spores? There is no stem. The plant consists of 2 leaf like structures fairly round and joined. Large masses of these plants clog water channels this time of year. These leaf like structures are very folded and feel thick but are small: perhaps 1/4” diameter.
Photos / Sounds
What
Western Goldenrod (Euthamia occidentalis)Observer
rwainsleyDescription
Common along the shore of canals inside Browns Island also common along the shore of the main river channels.
These really irritate my nose, had to remove to back yard and then cover in plastic!
Photos / Sounds
What
Yellow Flag Iris (Iris pseudacorus)Observer
rwainsleyDescription
The iris plants are ready to explode their seeds from pods like these. Large yellow blooms flowered in May and are very common and easy to spot when in bloom anywhere along the canals and ponds inside Browns Island. Less common on the shore of the main river channels.
March 29, 2018: about a third of these plants have open blooms. All have flower buds clearly visible.
The clumps of this plant appear all along the canal banks inside Browns Island, but are not much present along the banks of New York Slough.
Photos / Sounds
What
Delta Tule Pea (Lathyrus jepsonii)Observer
rwainsleyDescription
Probable Lathyrus latifolis common name isperrenislpea or everlasting pea.
Widely spaced plants fairly common all along the shore of the canals inside Browns Island. Rooted back about 2 feet from waters edge at 3 foot tide but may hang over the water.
Photos / Sounds
What
Bigelow's Sneezeweed (Helenium bigelovii)Observer
rwainsleyDescription
Bigelow’s sneeze weed has been blooming for at least a month. Widely distributed near the bank of the canals inside Browns Island
Photos / Sounds
What
Flanged Smartweed (Persicaria amphibia var. stipulacea)Observer
rwainsleyDescription
Rare on Browns Island. Listed only one individual plant located on the north side of the east-west canal just before the large pond. Never noticed this plant previously. Located about 3 feet away from water at 3 foot tide. Flower is bright fire engine red and is very noticeable among all the green stems and leaves.
Photos / Sounds
What
Hedge Bindweed (Calystegia sepium)Observer
rwainsleyDescription
Has been in bloom all summer. This is a vine that climbs on just about anything
Photos / Sounds
What
Common Water Hyacinth (Pontederia crassipes)Observer
rwainsleyDescription
Water hyacinth is flowering and has been since at least June. This week marked the first week when large masses of water hyacinth are moving with the outbound tides toward San Francisco Bay.
