Allergenic Trees of Texas

Cells Marked With () signify taxon present in area.
Cells Marked With () signify marginal or occasional presence.
Unmarked Cells signify taxon absent in area or unconfirmed.

Cross-reactive species grouped together in colored cells
2 Italicized species demonstrate only moderate cross-reactivity with other(s) in the group
3 This species is insect-pollinated

Most trees pollinate in the spring.

Cross-Reactive Trees 1

204: Ash, Arizona :

x

x

x

72: Ash, Red/Green :

x

x

x

x

x

74: Ash, White :

x

135: Privet, Common 3 :

x

x

x

x

76: Beech, American :

x

114: Oak, Black :

x

115: Oak, Bur :

x

x

119: Oak, Post :

x

x

x

x

x

x

116: Oak, Virginia Live

x

x

x

x

x

x

198: Oak, Water :

x

x

122: Oak, White :

x

Oak, others

x

x

x

x

x

x

x

x

x

82: Box Elder :

x

x

x

x

x

108: Maple, Red :

x

x

83: Cedar, Mountain :

x

x

84: Cedar, Red :

x

x

x

243: Juniper, Oneseed :

x

275: Juniper, Pinchot :

x

x

x

x

87: Cottonwood, Eastern :

x

x

x

x

x

Cottonwood, Rio Grande

x

88: Cottonwood, Western :

x

142: Willow, Black 2 :

x

x

x

x

x

x

92: Elm, American :

x

x

x

179: Elm, Cedar :

x

x

x

x

x

93: Elm, Siberian :

x

x

x

x

103: Hickory, Shagbark :

x

104: Hickory, White :

x

x

x

127: Pecan :

x

x

x

x

x

x

140: Walnut, Black 2 :

x

x

x

x

113: Mulberry, Paper :

x

x

112: Mulberry, Red :

x

x

x

x

x

194: Mulberry, White :

x

x

132: Pine, Loblolly :

x

x

x

x

129: Pine, Longleaf :

x

131: Pine, Yellow :

x

x

Other Trees

172: Acacia 3 :

x

x

x

x

173: Bayberry :

x

x

x

x

79: Birch, River :

x

x

x

x

193: Cypress, Bald :

x

x

x

x

98: Hackberry :

x

x

x

x

x

x

x

x

x

111: Mesquite 3 :

x

x

x

x

x

x

x

x

x

216: Palm, Queen

x

x

x

x

x

137: Sweet Gum :

x

x

138: Sycamore, Eastern :

x

x

x

x

x

Simpson, BJ. 1988. A Field Guide to Texas Trees. Gulf Publishing Co., Houston; and personal observations

Data obtained from USDA Plants Database ; USDA-FS Silvics of North America

For current pollen counts visit www.pollen.com or enter a zip code below.

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