Bergen's botany, key and floraNorthern and central states ed . mson beneath,green or dark purplish above, often with two wide silvery from Mexico. 8. PONTEDERIACE^. Pickerel-Weed Family Perennial marsh or aquatic herbs, stems simple or branched,succulent. Leaves simple, alternate. Flowers solitary orspiked, each subtended by a leaf-like spathe, perfect, mostlynot actinomorphic. Perianth corolla-like, 6-parted. Stamens3 or 6, unequal, inserted irregularly in the tube or throat ofthe perianth. Ovary superior, 1- or 3-cened; style single;stigma entire or toothed. Fruit a 1-seed
Bergen's botany, key and floraNorthern and central states ed . mson beneath,green or dark purplish above, often with two wide silvery from Mexico. 8. PONTEDERIACE^. Pickerel-Weed Family Perennial marsh or aquatic herbs, stems simple or branched,succulent. Leaves simple, alternate. Flowers solitary orspiked, each subtended by a leaf-like spathe, perfect, mostlynot actinomorphic. Perianth corolla-like, 6-parted. Stamens3 or 6, unequal, inserted irregularly in the tube or throat ofthe perianth. Ovary superior, 1- or 3-cened; style single;stigma entire or toothed. Fruit a 1-seeded utricle.* PONTEDERIA L. Stem erect, from a thick, creeping rootstock, bearing asingle leaf above the middle and several sheathing, bract-likeleaves at its base. Eadical leaves numerous, thick, parallel-veined. Petiole long, from a sheathing base. Flowers in ter-minal spikes. Perianth 2-lipped, lobes of the upper lip ovate,of the lower oblong, spreading. Stamens 6, the 3 upper shortand often imperfect, the 3 lower protruding. Ovary 3-celled, RUSH FAMILY 29. Rushes A, plant of Jitnciis tenuis, one half natural size; B, flower of same, magnified ;C, fruit magnified; Z>, flower of wood rush {Luzida), magnified. {D, afterWarming) so KEY AND FLORA but only 1 cell ovule-bearing; the 1-seeded utricle inclosedby the base of the perianth.* 1. P. cordata L. Pickerel Weed. Stem stout, erect, 2-4 ft. long, from heart-shaped to lanceolate and often halberd-shaped ; apex and basal lobes obtuse, finely nerved. Spike dense,2-4 in. long ; peduncles inclosed by the -spathe. Perianth hairy, bhie,the upper lip with 2 yellow spots; tube 6-ribbed, curved, rather longerthan the lobes. Ovary oblong. In ponds and slow streams.* 9. JUNCACE^. EusH Family Grass-like perennial or annual herbs, mostly growing onwet soil. Stems mostly erect but sometimes creeping, simpleor branched, naked or leafy and jointed. Leaves cylindrical,sheathing at the base, very slender and pointed or flattenedand
Size: 1301px × 1921px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectplants, bookyear1908
