. 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. Vol. II. Family loo. I. Trapa natans L Swimming Water- nut. Water-Caltrop. Fig. 3076. Trapa natans L. Sp. PI. 120. 1753. Rooting in the mud at the bottom of lakes or slow streams; stem often several feet long. Submerged leaves approximate, pectinately dissected, i'-4' long; floating leaves in a rosette sometimes 1° broad, their blades rhombic-ovate, sharply den
. 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. Vol. II. Family loo. I. Trapa natans L Swimming Water- nut. Water-Caltrop. Fig. 3076. Trapa natans L. Sp. PI. 120. 1753. Rooting in the mud at the bottom of lakes or slow streams; stem often several feet long. Submerged leaves approximate, pectinately dissected, i'-4' long; floating leaves in a rosette sometimes 1° broad, their blades rhombic-ovate, sharply dentate above, broadly cuneate and entire below, about i' wide, gla- brous and shining above, the conspicuous veins of the lower surface beset with short stiff hairs; petioles of the floating leaves 2'-6' long, inflated and spongy; flowers white, about 3" broad; fruit 1-2' long, armed with 4 some- what rectirved spines. Naturalized in ponds and streams, eastern Mas- sachusetts, and near Schenectady, N. Y, Native of Europe. Called also sanghara-nut, Jesuit's water-nut. Seed mealy, edible. June-July. 1852. HALORAGIDACEAE Kl. & Garcke, Bot. Erg. Wald. 151. Water-milfoil Family. Perennial or rarely annual herbs, mainly aquatic, with alternate or verticillate leaves, the submerged ones often pectinate-pinnatifid Flowers perfect, or monoe- cious, or dioecious, axillary, in interrupted spikes, solitary or clustered. Calyx- tube adnate to the ovary, its limb entire or 2-4-lobed. Petals small, 2-4, or none. Stamens 1-8 Ovary ovoid-oblong, or short-cylindric, 2-8-ribbed or winged, 1-4-celled; styles 1-4; stigmas papillose or plumose. Fruit a nutlet, or drupe, compressed, angular, ribbed or winged, indehiscent, of 2-4 i-seeded carpels. Endosperm fleshy; cotyledons minute. Eight genera and about loo species, of wide geographic distribution. Stamen i ; ovary i-celled. Stamens 2-8 ; ovary 3-4-celled. Fruit 3-angled or 4-angled. Fruit of 4 carpels. Hippuris. Proserpinaca. 3. Myriophyll
Size: 1202px × 2079px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
