. 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 102d meridian. Botany; Botany. Genus 25. CARROT FAMILY. 641 25. ZIZIA Koch, Nov. Act. Caes. Leop. Acad. 12: 129. 1825. Perennial mostly glabrous herbs, with ternate or ternately compound leaves, or the basal ones undivided as in Thasplum, and compound umbels of yellow flowers, the central fruit of each umbellet sessile. Involucre none; involucels of several small bracts. Calyx-teeth prominen
. 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 102d meridian. Botany; Botany. Genus 25. CARROT FAMILY. 641 25. ZIZIA Koch, Nov. Act. Caes. Leop. Acad. 12: 129. 1825. Perennial mostly glabrous herbs, with ternate or ternately compound leaves, or the basal ones undivided as in Thasplum, and compound umbels of yellow flowers, the central fruit of each umbellet sessile. Involucre none; involucels of several small bracts. Calyx-teeth prominent. Stylopodium none. Styles elongated. Fruit ovoid, or oblong, glabrous, or nearly so, somewhat flattened at right angles to the commissure, the ribs filiform, not winged; oil- tubes solitary in the intervals, with a small one under each rib. Seed-face flat. [In honor of I. B. Ziz, a Rhenish botanist.] : . Three species, mainly distinguished from the Thaspia by their wingless fruit. Type species : Zizia aurea (L.) Koch. Basal leaves 2-3-ternately compound. Rays of numerous, stout; fruit 2" long. Rays of the umbel 2-12, slender; fruit about i" long. Basal leaves cordate, undivided; fruit about I'A" long. 1. Z. aurea. 2. Z, Bebbii, 3- Z. cordata. I. Zizia aurea (L.) Koch. Early or Golden Meadow-Parsnip. Fig. 3138. Smyrnium aureum L. Sp. PI. 262. 1753. Z. aurea Koch, Nov. Act. Caes. Leop. 12 : 129. 1825. Thaspium aureum var. apterum A. Gray, Man. Ed, 2, 15&. 1856. Zizia aurea obtusifolia Bissell, Rhodora 2 : 225, 1900. Erect, glabrous, branched, i°-2i° high. Basal and lower leaves long-petioled, 2-3-ter- nately compound, the segments ovate, or ovate- lanceolate, acute, acuminate or obtusish at the apex, i'-2' long, sharply serrate; upper leaves shorter-petioled, ternate; rays of the umbels 9-25, stout, ascending, i'-2' long; fruit oblong, nearly 2" long, about li" wide. In fields, meadows, and swamps; New Bruns- wick to Ontario, Saskatchewa
Size: 1560px × 1601px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
