Fumaria flavula Raf.
Corydalis flavula (Raf.) DC.
Yellow corydalis, yellow fumewort, yellow harlequin
Yellow fumewort is native to North America.
Plants: Plants are up to 12″ (30 cm) tall, with one or more emerging from a single taproot. Stems have angled sides and a reddish tint.
Leaves: Alternate, and finely divided.
Flowers: Racemes (groups) up to 3″ (8 cm) in size. Individual flowers are yellow, tubular, about ¾″ (1.9 cm) long, opening at the end with serrated upper and lower petals and two smooth central petals. There is a spur on the back of each flower. They appear in April and May.
Fruits: Silques, like small bean pods, up to 1″ (2.5 cm) long, turning dark red.
Habitats: Cliffs, balds, or ledges, ridges, woodlands.
Online References:
Capnoides flavulum (Raf.) Kuntze
Fumaria flavula Raf.
Fumaria flavula Raf.
3/20/2012 · Gunpowder Falls State Park, Phoenix Rd, Phoenix, Maryland · ≈ 3½ × 3″ (8.6 × 7.8 cm) 
3/20/2012 · Gunpowder Falls State Park, Phoenix Rd, Phoenix, Maryland · ≈ 2½ × 2½″ (7.2 × 6.2 cm) 
3/20/2012 · Gunpowder Falls State Park, Phoenix Rd, Phoenix, Maryland · ≈ 4 × 4½″ (10 × 12 cm) 
3/5/2000 · Memphis, Tennessee · By Tim Chandler 
| Kingdom | Plantae | Plants, but not fungi, lichens, or algae (from Stearn's Botanical Latin) |
| Subkingdom | Tracheobionta | Vascular plants—plants with a “circulatory system” for delivering water and nutrients |
| Division | Magnoliophyta | Flowering plants, also known as angiosperms |
| Class | Magnoliopsida | Dicotyledons—plants with two initial seed leaves |
| Subclass | Magnoliidae | Includes magnolias, nutmeg, bay laurel, cinnamon, avocado, black pepper, and many others |
| Order | Papaverales | A group that includes buttercups and other poisonous plants |
| Family | Fumariaceae | Fumitory, fumewort, or bleeding-heart family |
| Genus | Corydalis | Means “crested lark” |
| Species | flavula | Yellow fumewort |
Corydalis flavula description by Thomas H. Kent, not updated.
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