annual

Showing 25–36 of 36 results

Medicago lupulina / black medic
- prostrate, long creeping stems
- compound leaves with 3 small, rounded leaflets
- teeny yellow flowers in very small button-like clusters
- disturbed areas with compacted soil - roadsides & wastelands
Melilotus spp / sweetclover
- yellow or white, floppy, tubular flowers in long-ish clusters (racemes)
- 3 small, pointy leaflets with petioles
- rangy, unkempt branching
- roadsides, waste places and sometimes in fields, grasslands
Microsteris gracilis / slender phlox
- everything about it is teeny
- white or pink, 5-petal flowers ca. 2 mm diameter
- exposed, in early spring (ephemeral)
Oxybasis glauca / oak-leaved goosefoot
- typically prostrate and small, apart from other plants
- mudflats and other drying wet areas
- small, blue-green, small-lobed leaves; often w/ reddish stems
- teeny clusters of teeny yellow flowers
- leaves feel cool and damp due to glandular hairs on lower surface
Poa bulbosa / bulbous meadow-grass
- short, tuft-forming grass
- funny-looking flower stalks... having bulblets instead of florets
- doesn't produce pollen or seeds
Polygonum aviculare / prostrate knotweed
- long, prostrate stems around a central point
- copious red-edged white flowers
- small green leaves
- along roadsides, parking lots and wherever trampling occurs
- an ugly weed you'll see on most of your walks around town
Potentilla norvegica / rough cinquefoil
- 5 yellow petals, not fused
- 5 sepals longer than petals, esp. after flowering
- numerous stamens and pistils
- compound leaves with leaflets grouped in 3s
- prominent veins; toothed margins
- hairy stems
- mostly in disturbed areas, including gardens
Silene latifolia / white campion
- white, 5-petaled flowers with distinctive inflated calyx (bladder)
- flowers in clusters atop stems
- whole plant densely hairy
- widespread on alkaline soils (e.g. the Valley)
Sisymbrium altissimum / tumble mustard
- inflorescence a raceme with yellow, teeny flowers
- long, thin seed pods (siliques)
- blooms throughout the spring and summer
- shoots look like a bunch of sticks glued together
- dries and breaks off, then tumbles
Solanum physalifolium / ground cherry nightshade
- flowers look like potato or tomato flowers
- small white, 5 recurved petals
- clump of yellow stamens protrude from flower
- triangular leaves with wedge-shaped bases
- usually sprawling on ground
Thlaspi arvense / field pennycress
- inflorescence a raceme with white, teeny flowers
- oval seed pods ca. 1/3" across
- blooms late spring and summer
- continues blooming as pods fill from older flowers
- common weed in disturbed habitats including cultivated land
Tripleurospermum inodorum / scentless chamomile
- daisy-like blossoms with finely divided leaves
- central disk shape changes from button- to dome- to hemisphere- with age
- ray petals droop as disk expands
- leaves don't smell when crushed