. 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. Botany. 598 ONAGRACEAE. Vol. II. 9. ANOGRA Spach, Ann. Sci. Nat. (II.) 4: 164. 1835. Low caulescent herbs. Stems often clothed with a papery bark. Leaves alternate, entire or usually pinnatilid. Buds drooping; flowers perfect, white or pmk, usually axillary, diurnal. Calyx-tube elongated, gradually enlarged upward, calyx-segments narrow, finally reflexed, the acute tips free
. 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. Botany. 598 ONAGRACEAE. Vol. II. 9. ANOGRA Spach, Ann. Sci. Nat. (II.) 4: 164. 1835. Low caulescent herbs. Stems often clothed with a papery bark. Leaves alternate, entire or usually pinnatilid. Buds drooping; flowers perfect, white or pmk, usually axillary, diurnal. Calyx-tube elongated, gradually enlarged upward, calyx-segments narrow, finally reflexed, the acute tips free or united in the bud. Stamens 8, equal in length; filaments filiform; anthers linear. Ovary elongated, 4-celled; united styles filiform; stigma deeply 4-cleft; ovules numerous, in i row, ascending. Capsules elongated, spreading or ascending, 4-angled, loculicidal. Seeds ascending, in 1 row, terete. [Anagram of Onagra.] About 10 species, chiefly in southern North America. Type species: Anogra Douglasiana Spach. Tips of the calyx-segments not free in the bud. i. A. albicaulis. Tips of the calyx-segments free in the bud. Throat of the calyx Throat of the calyx-tube glabrous Capsules narrowly ascending: Capsules widely spreading ; le. Anogra albicaulis (Pursh) Britton. 2. A, coronopifoUa. rly Prairie Evening-Primrose. Fig. 3045. Oenothera albicaulis Pursh, Fl. Am. Sept. 733. Oenothera piniiatifiJa Nutt. Gen. 1: Anogra albicaulis Britton, Mem. Tc Club 5 : Annual or biennial, diffusely branched at the base; branches decumbent or ascending, more or less hirsutely pubescent or puberu- lent, whitish and often shreddy, 4-12' long. Basal and lower leaves petioled, the upper sessile, oblanceolate or lanceolate in outline, deeply pinnatifid or the lowest repand- dentate (rarely entire), 1-4' long; flowers axillary, diurnal, ii'-3' broad, white, becom- ing rose-color; petals obcordate or cmar- ginate; calyx-segments lanceolate, not free in the bud, acuminate, hirsute, finally re- flexed
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
