. Botany, an elementary text for schools. Botany. POLYGONACE^ 305 1. RHfiUM. Rhubarb. Very large-leaved perennials, sending up stout hollow flower-stalks in earlj- summer which bear smaller leaves with sheathing bases: sepals G, all alike, withering rather than falling, and persisting beneath the 3-winged akene: stamens 9: styles ;!. Old World. B. Bhap6nticuin, Linn, lihuharh. Pie-plant. Figs. 78, 79. Leaves 1 ft. or more across, the thick petioles eaten: fls. white, in elevated panicles. 2. RtTMEX. Dock. Sorrel. IVniinial often deep-rooted plants with herbage bitter or sour: sepals 6, the 3 o
. Botany, an elementary text for schools. Botany. POLYGONACE^ 305 1. RHfiUM. Rhubarb. Very large-leaved perennials, sending up stout hollow flower-stalks in earlj- summer which bear smaller leaves with sheathing bases: sepals G, all alike, withering rather than falling, and persisting beneath the 3-winged akene: stamens 9: styles ;!. Old World. B. Bhap6nticuin, Linn, lihuharh. Pie-plant. Figs. 78, 79. Leaves 1 ft. or more across, the thick petioles eaten: fls. white, in elevated panicles. 2. RtTMEX. Dock. Sorrel. IVniinial often deep-rooted plants with herbage bitter or sour: sepals 6, the 3 outer large and spreading, the 3 inner (known as ''valves") enlarging after flowering and one or more of them often bearing a grain-like tubercle on the back: stamens G,styles 3: flowers in pan- icles or interrupted spikes. a. Docks: herbage bitter: valves often ijniiii- heariiKj: flowers mostly perfirt: leiires )it)t (irroic-shoped. R. obtusifdlius, Linn. Hitter duck. Lower leaves oblong-cordate and obtuse, not wavy: one valve usually grain-bearing. Weed from Europe. B. crispUB, Linn. Curly dock. Leaves lanceo- late, wavy or curled: all valves usually grain-bear- ing. Weed from Ruiuex Acetosellii. aa. Sorrels: herbage r: ralres not grain-bearing: fhtinrs diarioHS: leaves arrow-shaped. R. AcetOB^lla, Linn. Common or sheep sorrel. Fig. Low (1 ft. or less): leaves mostly arrow-shaped at base: flow- ers brownish, small, in a terminal |>aiiic-Ii'. ('"nimon in sterile fields. Europe. :!. FAGOPt'RUM. lUcKWUKAT. Fast-growing annuals, with somewhat triangu- lar leaves, and fragrant flowers in flattish, panicle- like clusters: calyx of ."> parts: stamens h: fruit a triangular akene. Olil World. F. eBCUl6ntuni, Momh. ('(imnnni Imekirhial. Fig. ;j4. Leaves triangular-arrow-shaped, Inng peti- oled: flowers white, in a ci>mp"und cluster: akene with regular angles. Flour is nuidi- fmin the grain. F. TatAricum, (iaertn. India wheat. .Sb-
Size: 1652px × 1512px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbai, bookcentury1900, bookdecade1900, booksubjectbotany
