. An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian . Oenothera strigosa Rydb. (0. canovirens Steele), of the Central States, ranging eastward to Illinois; resembles O. Oakesiana but has some long hairs and unappendaged calyx-segments. It may not be distinct from O. biennis. 5. Oenothera argillicola Mackenzie. Narrow- leaved Evening-Primrose. Fig. 3041. Oe. argilUcola Mackenzie, Torreya 4: 56. 1904. Onagra argillicola Mackenzie
. An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian . Oenothera strigosa Rydb. (0. canovirens Steele), of the Central States, ranging eastward to Illinois; resembles O. Oakesiana but has some long hairs and unappendaged calyx-segments. It may not be distinct from O. biennis. 5. Oenothera argillicola Mackenzie. Narrow- leaved Evening-Primrose. Fig. 3041. Oe. argilUcola Mackenzie, Torreya 4: 56. 1904. Onagra argillicola Mackenzie, Torreya 4: 57. 1904. Stems several from the same root, finely puberu- lent, 3°-4i° high. Rosette-leaves oblanceolate, 2*'-6' long, 8" wide or less, acute, sinuate, tapering into long petioles; stem-leaves linear-lanceolate, 2i'-3i' long, glabrous, • or slightly puberulent: calyx-tube very slender, glabrous, li'-iJ' long; petals obcordate, crenulate, ii'-i3' long; capsules glabrous, gradually tapering upward from the base, about i' long. In rocky soil. Virginia and West Virgima. July-Sept.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
