- Group 1Lycophytes, Monilophytes
- Group 2Gymnosperms
- Group 3Monocots
- Group 4Woody angiosperms with opposite or whorled leaves
- Group 5Woody angiosperms with alternate leaves
- Group 6Herbaceous angiosperms with inferior ovaries
- Group 7Herbaceous angiosperms with superior ovaries and zygomorphic flowers
- Group 8Herbaceous angiosperms with superior ovaries, actinomorphic flowers, and 2 or more distinct carpels
- Group 9Herbaceous angiosperms with superior ovaries, actinomorphic flowers, connate petals, and a solitary carpel or 2 or more connate carpels
- Group 10Herbaceous angiosperms with superior ovaries, actinomorphic flowers, distinct petals or the petals lacking, and 2 or more connate carpels
Species of Ligustrum are commonly planted for hedges in New England. Some of the species found in the area are native to Asia and, in those regions, are subdivided into varieties. However, no detailed systematic work has been done to determine which infraspecific taxa are planted here. Therefore, the following keys separate privets only to the rank of species. Reference: Nesom (2009a).
1a. Branchlets either glabrous or minutely and uniformly puberulent; leaf blades glabrous
1b. Branchlets pilose and/or pubescent with hairs of distinctly different lengths; leaf blades pubescent at least on the abaxial midrib or sometimes glabrous in L. obtusifolium
3a. Basal, connate portion of corolla 2.5–3 mm long, slightly shorter to approximately as long as the lobes [Fig. 736], usually barely exserted from calyx; anthers 1–2 mm long, typically exserted beyond the tips of the corolla lobes; panicles 6–10 cm tall, relatively open, often interspersed with non-flowering branchlets; pedicels 1–5 mm long
3b. Basal, connate portion of corolla 5–8 mm long, 1.5–3 times as long as the lobes (rarely only as long as lobes) [Fig. 735], evidently exserted from calyx; anthers 2–3 mm long, not surpassing the tips of the corolla lobes; panicles 1.5–4 cm tall, relatively compact, not usually interspersed with non-flowering branchlets; pedicels (0–) 0.5–2 mm long
Show photos of: Each photo represents one species in this genus.