SCIENTIFIC NAME: Pinus
COMMON NAME(S): Pine trees
FAMILY: PINACEAE - Pine family
ORIGIN: Worldwide, chiefly Northern Hemisphere, about 110 spp.
HABITAT: Woods, cultivated landscapes
CHARACTERISTICS: Rough and often plate-like
LEAVES: Spirally arranged, needle-like, in groups (fascicles)
FLOWERING SEASON: January-June
FRUITS: None, winged seeds borne in cones
ALLERGENIC PRINCIPLES: Pollen allergens
ALLERGENIC PROPERTIES: Respiratory
COMMENTS: All pine species contribute to airborne pollen counts, but they are seldom a cause of acute allergic reaction. Common species of the region include Longleaf pine (P. palustris Mill.), Loblolly pine (P. taeda), Slash pine (P. elliottii), Virginia pine (P. virginiana), and Shortleaf pine (P. echinata Mill.).