Brooklyn Botanic Garden

Pinus virginiana

Pinus

by Science Staff
Not peer reviewed
Last modified: 01/25/2013

Nomenclature

Pinus L., Sp. Pl. 2: 1000. 1753. Gen. Pl., ed. 5, 434. 1754. LECTOTYPE: Pinus sylvestris L. designated by Britton & Brown (1913).

Pinus sect. Strobus Sweet ex Spach, Hist. Nat. Veg. (Spach) 11: 394. 1841. Strobus (Sweet ex Spach) Opiz, Lotos 4: 94. 1854. Leucopitys Nieuwl., Amer. Midl. Naturalist 3: 69. 1913. TYPE: Strobus weymouthiana Opiz (=Pinus strobus L.).

Key to the species of Pinus

1. Needles in clusters of 5...Pinus strobus
1. Needles in clusters of 3 or less...2

2. Needles in clusters of 3 exclusively...Pinus rigida
2. Needles in clusters of 2 or 3...3

3. Needles in clusters of 2 and 3...4
3. Needles in clusters of 2 exclusively...5

4. Needles generally 3-6 cm...Pinus pungens
4. Needles generally 7-11 cm...Pinus echinata

5. Needles generally 7.5 cm or longer...6
5. Needles generally less than 7.5 cm...8

6. Buds not resinous...Pinus thunbergii
6. Buds resinous...7

7. Fresh needles snap or break when bent...Pinus resinosa
7. Fresh needles fold when bent...Pinus nigra

8. Needles generally 2.5 cm or less...Pinus banksiana
8. Needles generally 2.5 to 7.5 cm...9

9. Plant a low growing shrub...Pinus mugo
9. Plant a tree...10

10. Young twigs glaucous; needles with inconspicuous stomatal lines; bark on upper section of trunk reddish, scaly...Pinus virginiana
10. Young twigs not glaucous; needles with conspicuous stomatal lines; bark on upper section of trunk orange, platy...Pinus sylvestris

List of Pinus Species

References

References to Pinus

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