Ipomoea purpurea (L.) Roth
Family: Convolvulaceae
Pertinent Synonyms & Notes (particularly those used in California; go to GRIN for other synonyms)
Convolvulus purpureus L.
Pertinent Common Names (particularly those used in California; go to GRIN for other common names)
tall morningglory
Primary Disseminule Type
seed
Description (diagnostics are in brown)
Fruit a dehiscent (valvular) capsule, globose, ca. 1 cm diameter, containing a few seeds.
Seed shaped like a wedge of a sphere (± elliptic when viewed from the front or back, D-shaped when viewed from the side, cross-section ± trigonous), (3.5)4–6 mm long x (2.5)3–4 mm wide. Surface dull, rough (appearing granular or finely pitted under magnification), glabrous or with scattered short hairs, longitudinally grooved on dorsal side, longitudinally ridged on ventral side, often with 1–2 broad, shallow to deep, transverse wrinkles on both sides, sometimes with a thin ridge marking the margin between the dorsal and ventral sides, dark brown to black.
Hilum round to elliptic, 0.6–0.9 mm long, surrounded by a horseshoe-shaped ridge, glabrous or with a ring of short, silvery hairs.
Similar Species
Risk Assessment (codes in yellow or red indicate cause for concern; assessments are current as of mid-2011; click AUQP, NZBORIC, or NZBPI for access to the most recent versions of these databases and possible assessment changes)
AUQP, NZBORIC, NZBPI