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Erigeron abajoensis (Abajo Daisy, Abajo Fleabane) Asteraceae (Sunflower Family) Montane. Meadows. Summer. Erigeron abajoensis is a rare plant known from only a few counties in the Four Corners area of Utah, Colorado, and Arizona, but rarity, like most other aspects of our world, is a matter of place and time and circumstances. On the knolls where the photographs on this page were taken, this plant abounds. One of the knolls and its open, rocky habitat is shown immediately above. E. abajoensis typically grows to six inches tall but varies from two to fourteen inches tall with stems that often recline and then ascend (as shown in the photographs on this page) or with stems that are erect. The plant grows with tight, mounded clusters of shortly hairy, oblanceolate basal leaves. Stem leaves tend to be smaller and oblong or lance-oblong. Both basal and stem leaves have a single vein. Stanley Welsh, Utah plant authority, indicates that E. abajoensis is closely allied to E. caespitosus, E. nauseosus, and E. jonesii and can be difficult to separate from these. I find that E. abajoensis and E. leiomerus are also very similar. They can best be separated by noting several things: Rydberg and Garrett found the plant in 1911 in the Abajo Mountains, but it was not named and described until 1947 by Arthur Cronquist. |
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Erigeron abajoensis (Abajo Daisy, Abajo Fleabane) Montane. Meadows. Summer. Ray flowers are often reflexed (bent downward) and vary from 3 to 8 millimeters long.
Phyllaries are in 2 or 3 nearly equal length rows, but you may find them in equal length rows. The phyllaries are thickened in the middle, and often green with tan margins and reddish tips. Hairs on the phyllaries are white and multicellular. Hairs throughout the plant, but especially on and just below the phyllaries, are often crinkled or bent backward at their tip. |
Range map © John Kartesz,
County Color Key
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Range map for Erigeron abajoensis |