. The commonly occuring wild plants of Canada [microform] : a flora for the use of beginners. Botany; Plants; Botanique; Plantes. 208 COMMON CANADIAtT WILD PLANTS. one small scale to which is attached 4 short filaments; 3 flowers under each scale of the catkin. Fertile catkins stout, oblong, the scales or bracts ii-lobed and with 2 or 3 flowers under each; each flower a naked ovary, becoming a winged nutlet in fruit. Bark easily coming off in sheets. 2. Al 11118. Catkins much as in Betula, but each fertile and sterile flower has a distinct 3-5-parted calyx. Catkins solitary or clus- tered at t
. The commonly occuring wild plants of Canada [microform] : a flora for the use of beginners. Botany; Plants; Botanique; Plantes. 208 COMMON CANADIAtT WILD PLANTS. one small scale to which is attached 4 short filaments; 3 flowers under each scale of the catkin. Fertile catkins stout, oblong, the scales or bracts ii-lobed and with 2 or 3 flowers under each; each flower a naked ovary, becoming a winged nutlet in fruit. Bark easily coming off in sheets. 2. Al 11118. Catkins much as in Betula, but each fertile and sterile flower has a distinct 3-5-parted calyx. Catkins solitary or clus- tered at the ends of leafless branchlets or peduncles. Nutlets wingless or nearly so. i;These two genera are included in Cupuliferae in Macoun's Catalogue.) 1. BET'IJLA, Tourn. Birch. 1. B. lenta, L. (Cherry-Birch. Sweet or Black Birch.) Bark of the trunk dark brown, close, aromatic ; that of the twigs bronze-coloured. "Wood rose-coloured. Leaves ovate, with somewhat heart-shaped base, doubly serrate, pointed, short-petioled. Fruiting catkins sessile, thick, oblong- cylindrical.—Moist woods. 2. B. lu'tea, Michx. (Yellow or Gray Birch.) Bark of the trink yellowish-gray, somewhat silvery, scaling off in thin layers. Leaves hardly at all heart-shaped. Fruiting catkins thicker and shorter than in No. 1.—Moist woods. 3. B. populifo'lia, Ait. (American White Birch. Gray Birch.) Leaves very tremulous on slender petioles, trian- gular, very taper-pointed, nearly truncate at the base, smooth and shining except when young. Bark of trunk white, less separable than in Canoe Birch.—Poor soil, Atl. Prov. 4. B. papyra'eea, Ait. {B. papyri/era, Michx., in Ma- coun's Catalogue.) (Paper or Canoe Birch.) Bark of the trunk white, easily separating in sheets. Leaves ovate, taper-pointed, heart-shaped, long-petioled. Fruiting cat- kins cylindrical, usually hanging on slender peduncles.— Woods. 5. B. pu'mila, L. (Low Birch.) A shrub with brownish bark, not glandular. Leaves ovate or roundish, pale
Size: 1481px × 1687px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectbotany, booksubjectplants, bookyear18
