This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol2", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
Erect or climbing herbs, with basal and cauline decompound leaves, and racemose flowers, terminal, or opposite the petioles. Sepals 2, small. Corolla irregular, deciduous; petals 4, erect-connivent, one of the outer pairs spurred at the base, the interior ones narrow, keeled on the back. Stamens 6, in 2 sets, opposite the outer petals. Placentae 2; style entire, dilated or lobed, persistent. Capsule linear or oblong, 2-valved. [Greek, smoke-like, in allusion to the smoke-like odor of some species, as in Fumaria.]
About no species, natives of the north temperate zone and South Africa. Type species: Fumaria sembervirens L.
Stems low, diffuse or ascending; flowers yellow.
Flowers 3"-4" long; spur short.
Seeds sharp-margined, wrinkled; pods drooping or spreading.
Seeds blunt-margined, smooth, shining; pods ascending.
Flowers 6"-8" long; spur conspicuous.
Seeds smooth or obscurely reticulated; pods spreading, ascending or pendulous.
Capsules spreading or drooping, distinctly torulose; eastern.
Capsules ascending, terete or slightly torulose; western.
Seeds finely reticulated; pods ascending.
Pods densely covered with transparent vesicles.
Fumaria sempervirens L. Sp. Pl. 700. 1753.
Capnoides sempervirens Borck. in Roem. Arch. 1: Part 2, 44. 1797.
Corydalis sempervirens Pers. Syn. 2: 269. 1807.
Glabrous, glaucous, erect or ascending, 5'-2o high, freely-branching. Lower leaves 1'-4' long, short-petioled, the upper nearly sessile, pinnately decompound, the primary divisions distant, the ultimate segments obovate or cuneate, toothed or entire, obtuse, often mucronulate; flowers numerous, panicled, borne in cymose clusters at the ends of the branches, 5"-8" long, pink or rarely white, with a yellow tip; spur rounded, about 1" long; capsules narrowly linear, erect, 1'-2' long, nodose when mature; seeds shining, minutely reticulated.
In rocky places, Nova Scotia to Alaska, Georgia, Minnesota, Montana and British Columbia. Ascends to 4500 ft. in North Carolina. Roman wormwood. April-Sept.