Editing Lathyrus latifolius (section)

== Morphology ==
''Lathyrus latifolius'' has winged hairless stems, and alternating blue green compound leaves consisting of a single pair of [[leaflet (botany)|leaflets]] and a winged [[Petiole (botany)|petiole]] about {{convert|2|in}} long. The leaflets are narrowly [[Glossary of leaf morphology#ovate|ovate]] or oblong-ovate, smooth along the margins, hairless and up to {{cvt|3|in}} long and {{cvt|1|in}} across. There is a branched tendril between the leaflets.

=== Racemes ===
Short [[racemes]] of 4–11 flowers are produced from the axils of the leaves. The flowers, which are unscented, are about {{cvt|3/4–1|in}} across with a typical structure for ''[[Faboideae]]'', with an upper standard and lower keel, enclosed by lateral [[petals]]. There are 5 petals, which are purplish pink, fading with age. There is a green [[Calyx (botany)|calyx]] with 5 teeth, often unequal. The blooming period lasts about 2 months during the summer and early autumn.<ref name=illwild>[http://www.illinoiswildflowers.info/weeds/plants/everlasting_pea.htm Weedy Wildflowers of Illinois: Everlasting pea]</ref>

=== Seeds ===
The flowers are followed by hairless flattened seedpods, about {{cvt|2|in}} long and {{cvt|1/2|in}} wide, with several seeds inside. The seedpod, which is initially green, gradually turns brown, splitting open into curled segments, flinging out the [[seeds]]. The seeds are dark and oblong to [[Seed|reniform]] in shape.